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"presets": [
["es2015", {
"loose": true,
"modules": false
}],
"stage-0"
],
"plugins": [
"transform-flow-strip-types",
"external-helpers"
],
"env": {
"watch": {
"presets": [
["es2015", {
"loose": true
}],
"stage-0"
]
},
"test": {
"plugins": ["istanbul"]
}
}
}
babylon-6.18.0/.editorconfig 0000664 0000000 0000000 00000000242 13144646270 0015716 0 ustar 00root root 0000000 0000000 root = true
[*]
insert_final_newline = true
charset = utf-8
trim_trailing_whitespace = true
end_of_line = lf
[*.{js,json}]
indent_style = space
indent_size = 2
babylon-6.18.0/.eslintignore 0000664 0000000 0000000 00000000061 13144646270 0015743 0 ustar 00root root 0000000 0000000 .nyc_output
build
coverage
lib
node_modules
test
babylon-6.18.0/.eslintrc 0000664 0000000 0000000 00000000072 13144646270 0015066 0 ustar 00root root 0000000 0000000 {
"extends": "babel",
"env": {
"node": true
}
}
babylon-6.18.0/.flowconfig 0000664 0000000 0000000 00000000260 13144646270 0015377 0 ustar 00root root 0000000 0000000 [ignore]
.*/lib/.*
.*/test/.*
.*/build/.*
[include]
[libs]
[options]
strip_root=true
suppress_comment= \\(.\\|\n\\)*\\$FlowFixMe
suppress_comment= \\(.\\|\n\\)*\\$FlowIssue
babylon-6.18.0/.gitattributes 0000664 0000000 0000000 00000000016 13144646270 0016133 0 ustar 00root root 0000000 0000000 * text eol=lf
babylon-6.18.0/.github/ 0000775 0000000 0000000 00000000000 13144646270 0014603 5 ustar 00root root 0000000 0000000 babylon-6.18.0/.github/ISSUE_TEMPLATE.md 0000664 0000000 0000000 00000001761 13144646270 0017315 0 ustar 00root root 0000000 0000000
### Input Code
```js
var your => (code) => here;
```
### Babylon/Babel Configuration
```js
{
"your": { "config": "here" }
}
```
### Expected Behavior
### Current Behavior
### Your Environment
| software | version
| ---------------- | -------
| Babylon |
| node |
| npm |
| Operating System |
babylon-6.18.0/.github/PULL_REQUEST_TEMPLATE.md 0000664 0000000 0000000 00000001036 13144646270 0020404 0 ustar 00root root 0000000 0000000
| Q | A
| ----------------- | ---
| Bug fix? | yes/no
| Breaking change? | yes/no
| New feature? | yes/no
| Deprecations? | yes/no
| Spec compliancy? | yes/no
| Tests added/pass? | yes/no
| Fixed tickets | comma-separated list of tickets fixed by the PR, if any
| License | MIT
babylon-6.18.0/.gitignore 0000664 0000000 0000000 00000000054 13144646270 0015232 0 ustar 00root root 0000000 0000000 .nyc_output
build
coverage
lib
node_modules
babylon-6.18.0/.travis.yml 0000664 0000000 0000000 00000002445 13144646270 0015361 0 ustar 00root root 0000000 0000000 sudo: false
language: node_js
node_js:
- "4"
- "5"
- "6"
- "7"
- "8"
before_install:
# Rollup doesn't support node < 4.x. Switch to latest for build
- . $HOME/.nvm/nvm.sh
- nvm install stable && nvm use stable
before_script:
- 'if [ -n "${BABEL-}" ]; then make bootstrap-babel ; fi'
- 'if [ -n "${FLOWTESTS-}" ]; then make bootstrap-flow ; fi'
- 'BABEL_ENV=test npm run build'
# Switch back to node version currently being tested prior to test run
- 'nvm use $TRAVIS_NODE_VERSION;'
script:
- 'if [ -n "${LINT-}" ]; then npm run lint ; fi'
- 'if [ -n "${FLOW-}" ]; then npm run flow ; fi'
- 'if [ -n "${FLOWTESTS-}" ]; then make test-flow ; fi'
- 'if [ -n "${BABEL-}" ]; then make test-babel ; fi'
- 'if [ -z "${LINT-}" ] && [ -z "${FLOW-}" ] && [ -z "${BABEL-}" ] && [ -z "${FLOWTESTS-}" ]; then npm run test-ci ; fi'
matrix:
fast_finish: true
include:
- node_js: "node"
env: LINT=true
- node_js: "node"
env: FLOW=true
- node_js: "node"
env: BABEL=true
- node_js: "node"
env: FLOWTESTS=true
allow_failures:
- node_js: "node"
env: FLOWTESTS=true
after_success: 'if [ -z "${LINT-}" ] && [ -z "${FLOW-}" ] && [ -z "${FLOWTESTS-}" ]; then npm run coverage ; fi'
notifications:
slack: babeljs:5Wy4QX13KVkGy9CnU0rmvgeK
babylon-6.18.0/AUTHORS 0000664 0000000 0000000 00000001112 13144646270 0014306 0 ustar 00root root 0000000 0000000 List of Acorn contributors. Updated before every release.
Adrian Rakovsky
Alistair Braidwood
Andres Suarez
Aparajita Fishman
Arian Stolwijk
Artem Govorov
Brandon Mills
Charles Hughes
Conrad Irwin
David Bonnet
Forbes Lindesay
Gilad Peleg
impinball
Ingvar Stepanyan
Jesse McCarthy
Jiaxing Wang
Joel Kemp
Johannes Herr
Jürg Lehni
keeyipchan
Kevin Kwok
krator
Marijn Haverbeke
Martin Carlberg
Mathias Bynens
Mathieu 'p01' Henri
Max Schaefer
Max Zerzouri
Mihai Bazon
Mike Rennie
Nick Fitzgerald
Oskar Schöldström
Paul Harper
Peter Rust
PlNG
r-e-d
Rich Harris
Sebastian McKenzie
zsjforcn
babylon-6.18.0/CHANGELOG.md 0000664 0000000 0000000 00000103350 13144646270 0015056 0 ustar 00root root 0000000 0000000 # Changelog
> **Tags:**
> - :boom: [Breaking Change]
> - :eyeglasses: [Spec Compliancy]
> - :rocket: [New Feature]
> - :bug: [Bug Fix]
> - :memo: [Documentation]
> - :house: [Internal]
> - :nail_care: [Polish]
> Semver Policy: https://github.com/babel/babylon#semver
_Note: Gaps between patch versions are faulty, broken or test releases._
See the [Babel Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md) for the pre-6.8.0 version Changelog.
## 6.17.4 (2017-06-18)
* Fix comment attachment for call expressions (#575) (aardito2)
* Correctly put typeParameters on FunctionExpression (#585) (Daniel Tschinder)
## 6.17.3 (2017-06-09)
* Fix location info on FunctionTypeParam nodes (#565) (#571) (Michal Srb)
* Fix stmt value being the raw value (#557) (#558) (Daniel Tschinder)
## 6.17.2 (2017-05-31)
* Fixed disappearing comments following a trailing comma on the last property of an object literal or the last argument of a call expression (#478) (aardito2)
* Fix #437: only prohibit 'export type from "module" ' when flow is enabled (#438) (Kevin Gibbons)
* Fix handling of anonymous parameters in `flowParseObjectTypeMethodish`. (#526) (Max Schaefer)
* Convert argument of SpreadElement correctly to assignable (#518) (Daniel Tschinder)
## 6.17.1 (2017-05-10)
* Fix typo in flow spread operator error (Brian Ng)
* Fixed invalid number literal parsing ([#473](https://github.com/babel/babylon/pull/473)) (Alex Kuzmenko)
* Fix number parser ([#433](https://github.com/babel/babylon/pull/433)) (Alex Kuzmenko)
* Ensure non pattern shorthand props are checked for reserved words ([#479](https://github.com/babel/babylon/pull/479)) (Brian Ng)
* Remove jsx context when parsing arrow functions ([#475](https://github.com/babel/babylon/pull/475)) (Brian Ng)
* Allow super in class properties ([#499](https://github.com/babel/babylon/pull/499)) (Brian Ng)
* Allow flow class field to be named constructor ([#510](https://github.com/babel/babylon/pull/510)) (Brian Ng)
## 6.17.0 (2017-04-20)
* Cherry-pick #418 to 6.x ([#476](https://github.com/babel/babylon/pull/476)) (Sebastian McKenzie)
* Add support for invalid escapes in tagged templates ([#274](https://github.com/babel/babylon/pull/274)) (Kevin Gibbons)
* Throw error if new.target is used outside of a function ([#402](https://github.com/babel/babylon/pull/402)) (Brian Ng)
* Fix parsing of class properties ([#351](https://github.com/babel/babylon/pull/351)) (Kevin Gibbons)
* Fix parsing yield with dynamicImport ([#383](https://github.com/babel/babylon/pull/383)) (Brian Ng)
* Ensure consistent start args for parseParenItem ([#386](https://github.com/babel/babylon/pull/386)) (Brian Ng)
## 6.16.0 (2017-02-23)
### :rocket: New Feature
***ESTree*** compatibility as plugin ([#277](https://github.com/babel/babylon/pull/277)) (Daniel Tschinder)
We finally introduce a new compatibility layer for ESTree. To put babylon into ESTree-compatible mode the new plugin `estree` can be enabled. In this mode the parser will output an AST that is compliant to the specs of [ESTree](https://github.com/estree/estree/)
We highly recommend everyone who uses babylon outside of babel to use this plugin. This will make it much easier for users to switch between different ESTree-compatible parsers. We so far tested several projects with different parsers and exchanged their parser to babylon and in nearly all cases it worked out of the box. Some other estree-compatible parsers include `acorn`, `esprima`, `espree`, `flow-parser`, etc.
To enable `estree` mode simply add the plugin in the config:
```json
{
"plugins": [ "estree" ]
}
```
If you want to migrate your project from non-ESTree mode to ESTree, have a look at our [Readme](https://github.com/babel/babylon/#output), where all deviations are mentioned.
Add a parseExpression public method ([#213](https://github.com/babel/babylon/pull/213)) (jeromew)
Babylon exports a new function to parse a single expression
```js
import { parseExpression } from 'babylon';
const ast = parseExpression('x || y && z', options);
```
The returned AST will only consist of the expression. The options are the same as for `parse()`
Add startLine option ([#346](https://github.com/babel/babylon/pull/346)) (Raphael Mu)
A new option was added to babylon allowing to change the intial linenumber for the first line which is usually `1`.
Changing this for example to `100` will make line `1` of the input source to be marked as line `100`, line `2` as `101`, line `3` as `102`, ...
Function predicate declaration ([#103](https://github.com/babel/babylon/pull/103)) (Panagiotis Vekris)
Added support for function predicates which flow introduced in version 0.33.0
```js
declare function is_number(x: mixed): boolean %checks(typeof x === "number");
```
Allow imports in declare module ([#315](https://github.com/babel/babylon/pull/315)) (Daniel Tschinder)
Added support for imports within module declarations which flow introduced in version 0.37.0
```js
declare module "C" {
import type { DT } from "D";
declare export type CT = { D: DT };
}
```
### :eyeglasses: Spec Compliancy
Forbid semicolons after decorators in classes ([#352](https://github.com/babel/babylon/pull/352)) (Kevin Gibbons)
This example now correctly throws an error when there is a semicolon after the decorator:
```js
class A {
@a;
foo(){}
}
```
Keywords are not allowed as local specifier ([#307](https://github.com/babel/babylon/pull/307)) (Daniel Tschinder)
Using keywords in imports is not allowed anymore:
```js
import { default } from "foo";
import { a as debugger } from "foo";
```
Do not allow overwritting of primitive types ([#314](https://github.com/babel/babylon/pull/314)) (Daniel Tschinder)
In flow it is now forbidden to overwrite the primitve types `"any"`, `"mixed"`, `"empty"`, `"bool"`, `"boolean"`, `"number"`, `"string"`, `"void"` and `"null"` with your own type declaration.
Disallow import type { type a } from … ([#305](https://github.com/babel/babylon/pull/305)) (Daniel Tschinder)
The following code now correctly throws an error
```js
import type { type a } from "foo";
```
Don't parse class properties without initializers when classProperties is disabled and Flow is enabled ([#300](https://github.com/babel/babylon/pull/300)) (Andrew Levine)
Ensure that you enable the `classProperties` plugin in order to enable correct parsing of class properties. Prior to this version it was possible to parse them by enabling the `flow` plugin but this was not intended the behaviour.
If you enable the flow plugin you can only define the type of the class properties, but not initialize them.
Fix export default async function to be FunctionDeclaration ([#324](https://github.com/babel/babylon/pull/324)) (Daniel Tschinder)
Parsing the following code now returns a `FunctionDeclaration` AST node instead of `FunctionExpression`.
```js
export default async function bar() {};
```
### :nail_care: Polish
Improve error message on attempt to destructure named import ([#288](https://github.com/babel/babylon/pull/288)) (Brian Ng)
### :bug: Bug Fix
Fix negative number literal typeannotations ([#366](https://github.com/babel/babylon/pull/366)) (Daniel Tschinder)
Ensure takeDecorators is called on exported class ([#358](https://github.com/babel/babylon/pull/358)) (Brian Ng)
ESTree: correctly change literals in all cases ([#368](https://github.com/babel/babylon/pull/368)) (Daniel Tschinder)
Correctly convert RestProperty to Assignable ([#339](https://github.com/babel/babylon/pull/339)) (Daniel Tschinder)
Fix #321 by allowing question marks in type params ([#338](https://github.com/babel/babylon/pull/338)) (Daniel Tschinder)
Fix #336 by correctly setting arrow-param ([#337](https://github.com/babel/babylon/pull/337)) (Daniel Tschinder)
Fix parse error when destructuring `set` with default value ([#317](https://github.com/babel/babylon/pull/317)) (Brian Ng)
Fix ObjectTypeCallProperty static ([#298](https://github.com/babel/babylon/pull/298)) (Dan Harper)
### :house: Internal
Fix generator-method-with-computed-name spec ([#360](https://github.com/babel/babylon/pull/360)) (Alex Rattray)
Fix flow type-parameter-declaration test with unintended semantic ([#361](https://github.com/babel/babylon/pull/361)) (Alex Rattray)
Cleanup and splitup parser functions ([#295](https://github.com/babel/babylon/pull/295)) (Daniel Tschinder)
chore(package): update flow-bin to version 0.38.0 ([#313](https://github.com/babel/babylon/pull/313)) (greenkeeper[bot])
Call inner function instead of 1:1 copy to plugin ([#294](https://github.com/babel/babylon/pull/294)) (Daniel Tschinder)
Update eslint-config-babel to the latest version 🚀 ([#299](https://github.com/babel/babylon/pull/299)) (greenkeeper[bot])
Update eslint-config-babel to the latest version 🚀 ([#293](https://github.com/babel/babylon/pull/293)) (greenkeeper[bot])
devDeps: remove eslint-plugin-babel ([#292](https://github.com/babel/babylon/pull/292)) (Kai Cataldo)
Correct indent eslint rule config ([#276](https://github.com/babel/babylon/pull/276)) (Daniel Tschinder)
Fail tests that have expected.json and throws-option ([#285](https://github.com/babel/babylon/pull/285)) (Daniel Tschinder)
### :memo: Documentation
Update contributing with more test info [skip ci] ([#355](https://github.com/babel/babylon/pull/355)) (Brian Ng)
Update API documentation ([#330](https://github.com/babel/babylon/pull/330)) (Timothy Gu)
Added keywords to package.json ([#323](https://github.com/babel/babylon/pull/323)) (Dmytro)
AST spec: fix casing of `RegExpLiteral` ([#318](https://github.com/babel/babylon/pull/318)) (Mathias Bynens)
## 6.15.0 (2017-01-10)
### :eyeglasses: Spec Compliancy
Add support for Flow shorthand import type ([#267](https://github.com/babel/babylon/pull/267)) (Jeff Morrison)
This change implements flows new shorthand import syntax
and where previously you had to write this code:
```js
import {someValue} from "blah";
import type {someType} from "blah";
import typeof {someOtherValue} from "blah";
```
you can now write it like this:
```js
import {
someValue,
type someType,
typeof someOtherValue,
} from "blah";
```
For more information look at [this](https://github.com/facebook/flow/pull/2890) pull request.
flow: allow leading pipes in all positions ([#256](https://github.com/babel/babylon/pull/256)) (Vladimir Kurchatkin)
This change now allows a leading pipe everywhere types can be used:
```js
var f = (x): | 1 | 2 => 1;
```
Throw error when exporting non-declaration ([#241](https://github.com/babel/babylon/pull/241)) (Kai Cataldo)
Previously babylon parsed the following exports, although they are not valid:
```js
export typeof foo;
export new Foo();
export function() {};
export for (;;);
export while(foo);
```
### :bug: Bug Fix
Don't set inType flag when parsing property names ([#266](https://github.com/babel/babylon/pull/266)) (Vladimir Kurchatkin)
This fixes parsing of this case:
```js
const map = {
[age <= 17] : 'Too young'
};
```
Fix source location for JSXEmptyExpression nodes (fixes #248) ([#249](https://github.com/babel/babylon/pull/249)) (James Long)
The following case produced an invalid AST
```js
{/* foo */}
```
Use fromCodePoint to convert high value unicode entities ([#243](https://github.com/babel/babylon/pull/243)) (Ryan Duffy)
When high value unicode entities (e.g. 💩) were used in the input source code they are now correctly encoded in the resulting AST.
Rename folder to avoid Windows-illegal characters ([#281](https://github.com/babel/babylon/pull/281)) (Ryan Plant)
Allow this.state.clone() when parsing decorators ([#262](https://github.com/babel/babylon/pull/262)) (Alex Rattray)
### :house: Internal
User external-helpers ([#254](https://github.com/babel/babylon/pull/254)) (Daniel Tschinder)
Add watch script for dev ([#234](https://github.com/babel/babylon/pull/234)) (Kai Cataldo)
Freeze current plugins list for "*" option, and remove from README.md ([#245](https://github.com/babel/babylon/pull/245)) (Andrew Levine)
Prepare tests for multiple fixture runners. ([#240](https://github.com/babel/babylon/pull/240)) (Daniel Tschinder)
Add some test coverage for decorators stage-0 plugin ([#250](https://github.com/babel/babylon/pull/250)) (Andrew Levine)
Refactor tokenizer types file ([#263](https://github.com/babel/babylon/pull/263)) (Sven SAULEAU)
Update eslint-config-babel to the latest version 🚀 ([#273](https://github.com/babel/babylon/pull/273)) (greenkeeper[bot])
chore(package): update rollup to version 0.41.0 ([#272](https://github.com/babel/babylon/pull/272)) (greenkeeper[bot])
chore(package): update flow-bin to version 0.37.0 ([#255](https://github.com/babel/babylon/pull/255)) (greenkeeper[bot])
## 6.14.1 (2016-11-17)
### :bug: Bug Fix
Allow `"plugins": ["*"]` ([#229](https://github.com/babel/babylon/pull/229)) (Daniel Tschinder)
```js
{
"plugins": ["*"]
}
```
Will include all parser plugins instead of specifying each one individually. Useful for tools like babel-eslint, jscodeshift, and ast-explorer.
## 6.14.0 (2016-11-16)
### :eyeglasses: Spec Compliancy
Throw error for reserved words `enum` and `await` ([#195](https://github.com/babel/babylon/pull/195)) (Kai Cataldo)
[11.6.2.2 Future Reserved Words](http://www.ecma-international.org/ecma-262/6.0/#sec-future-reserved-words)
Babylon will throw for more reserved words such as `enum` or `await` (in strict mode).
```
class enum {} // throws
class await {} // throws in strict mode (module)
```
Optional names for function types and object type indexers ([#197](https://github.com/babel/babylon/pull/197)) (Gabe Levi)
So where you used to have to write
```js
type A = (x: string, y: boolean) => number;
type B = (z: string) => number;
type C = { [key: string]: number };
```
you can now write (with flow 0.34.0)
```js
type A = (string, boolean) => number;
type B = string => number;
type C = { [string]: number };
```
Parse flow nested array type annotations like `number[][]` ([#219](https://github.com/babel/babylon/pull/219)) (Bernhard Häussner)
Supports these form now of specifying array types:
```js
var a: number[][][][];
var b: string[][];
```
### :bug: Bug Fix
Correctly eat semicolon at the end of `DelcareModuleExports` ([#223](https://github.com/babel/babylon/pull/223)) (Daniel Tschinder)
```
declare module "foo" { declare module.exports: number }
declare module "foo" { declare module.exports: number; } // also allowed now
```
### :house: Internal
* Count Babel tests towards Babylon code coverage ([#182](https://github.com/babel/babylon/pull/182)) (Moti Zilberman)
* Fix strange line endings ([#214](https://github.com/babel/babylon/pull/214)) (Thomas Grainger)
* Add node 7 (Daniel Tschinder)
* chore(package): update flow-bin to version 0.34.0 ([#204](https://github.com/babel/babylon/pull/204)) (Greenkeeper)
## v6.13.1 (2016-10-26)
### :nail_care: Polish
- Use rollup for bundling to speed up startup time ([#190](https://github.com/babel/babylon/pull/190)) ([@drewml](https://github.com/DrewML))
```js
const babylon = require('babylon');
const ast = babylon.parse('var foo = "lol";');
```
With that test case, there was a ~95ms savings by removing the need for node to build/traverse the dependency graph.
**Without bundling**

**With bundling**

- add clean command [skip ci] ([#201](https://github.com/babel/babylon/pull/201)) (Henry Zhu)
- add ForAwaitStatement (async generator already added) [skip ci] ([#196](https://github.com/babel/babylon/pull/196)) (Henry Zhu)
## v6.13.0 (2016-10-21)
### :eyeglasses: Spec Compliancy
Property variance type annotations for Flow plugin ([#161](https://github.com/babel/babylon/pull/161)) (Sam Goldman)
> See https://flowtype.org/docs/variance.html for more information
```js
type T = { +p: T };
interface T { -p: T };
declare class T { +[k:K]: V };
class T { -[k:K]: V };
class C2 { +p: T = e };
```
Raise error on duplicate definition of __proto__ ([#183](https://github.com/babel/babylon/pull/183)) (Moti Zilberman)
```js
({ __proto__: 1, __proto__: 2 }) // Throws an error now
```
### :bug: Bug Fix
Flow: Allow class properties to be named `static` ([#184](https://github.com/babel/babylon/pull/184)) (Moti Zilberman)
```js
declare class A {
static: T;
}
```
Allow "async" as identifier for object literal property shorthand ([#187](https://github.com/babel/babylon/pull/187)) (Andrew Levine)
```js
var foo = { async, bar };
```
### :nail_care: Polish
Fix flowtype and add inType to state ([#189](https://github.com/babel/babylon/pull/189)) (Daniel Tschinder)
> This improves the performance slightly (because of hidden classes)
### :house: Internal
Fix .gitattributes line ending setting ([#191](https://github.com/babel/babylon/pull/191)) (Moti Zilberman)
Increase test coverage ([#175](https://github.com/babel/babylon/pull/175) (Moti Zilberman)
Readd missin .eslinignore for IDEs (Daniel Tschinder)
Error on missing expected.json fixture in CI ([#188](https://github.com/babel/babylon/pull/188)) (Moti Zilberman)
Add .gitattributes and .editorconfig for LF line endings ([#179](https://github.com/babel/babylon/pull/179)) (Moti Zilberman)
Fixes two tests that are failing after the merge of #172 ([#177](https://github.com/babel/babylon/pull/177)) (Moti Zilberman)
## v6.12.0 (2016-10-14)
### :eyeglasses: Spec Compliancy
Implement import() syntax ([#163](https://github.com/babel/babylon/pull/163)) (Jordan Gensler)
#### Dynamic Import
- Proposal Repo: https://github.com/domenic/proposal-dynamic-import
- Championed by [@domenic](https://github.com/domenic)
- stage-2
- [sept-28 tc39 notes](https://github.com/rwaldron/tc39-notes/blob/master/es7/2016-09/sept-28.md#113a-import)
> This repository contains a proposal for adding a "function-like" import() module loading syntactic form to JavaScript
```js
import(`./section-modules/${link.dataset.entryModule}.js`)
.then(module => {
module.loadPageInto(main);
})
```
Add EmptyTypeAnnotation ([#171](https://github.com/babel/babylon/pull/171)) (Sam Goldman)
#### EmptyTypeAnnotation
Just wasn't covered before.
```js
type T = empty;
```
### :bug: Bug Fix
Fix crash when exporting with destructuring and sparse array ([#170](https://github.com/babel/babylon/pull/170)) (Jeroen Engels)
```js
// was failing due to sparse array
export const { foo: [ ,, qux7 ] } = bar;
```
Allow keyword in Flow object declaration property names with type parameters ([#146](https://github.com/babel/babylon/pull/146)) (Dan Harper)
```js
declare class X {
foobar(): void;
static foobar(): void;
}
```
Allow keyword in object/class property names with Flow type parameters ([#145](https://github.com/babel/babylon/pull/145)) (Dan Harper)
```js
class Foo {
delete(item: T): T {
return item;
}
}
```
Allow typeAnnotations for yield expressions ([#174](https://github.com/babel/babylon/pull/174))) (Daniel Tschinder)
```js
function *foo() {
const x = (yield 5: any);
}
```
### :nail_care: Polish
Annotate more errors with expected token ([#172](https://github.com/babel/babylon/pull/172))) (Moti Zilberman)
```js
// Unexpected token, expected ; (1:6)
{ set 1 }
```
### :house: Internal
Remove kcheck ([#173](https://github.com/babel/babylon/pull/173))) (Daniel Tschinder)
Also run flow, linting, babel tests on seperate instances (add back node 0.10)
## v6.11.6 (2016-10-12)
### :bug: Bug Fix/Regression
Fix crash when exporting with destructuring and sparse array ([#170](https://github.com/babel/babylon/pull/170)) (Jeroen Engels)
```js
// was failing with `Cannot read property 'type' of null` because of null identifiers
export const { foo: [ ,, qux7 ] } = bar;
```
## v6.11.5 (2016-10-12)
### :eyeglasses: Spec Compliancy
Fix: Check for duplicate named exports in exported destructuring assignments ([#144](https://github.com/babel/babylon/pull/144)) (Kai Cataldo)
```js
// `foo` has already been exported. Exported identifiers must be unique. (2:20)
export function foo() {};
export const { a: [{foo}] } = bar;
```
Fix: Check for duplicate named exports in exported rest elements/properties ([#164](https://github.com/babel/babylon/pull/164)) (Kai Cataldo)
```js
// `foo` has already been exported. Exported identifiers must be unique. (2:22)
export const foo = 1;
export const [bar, ...foo] = baz;
```
### :bug: Bug Fix
Fix: Allow identifier `async` for default param in arrow expression ([#165](https://github.com/babel/babylon/pull/165)) (Kai Cataldo)
```js
// this is ok now
const test = ({async = true}) => {};
```
### :nail_care: Polish
Babylon will now print out the token it's expecting if there's a `SyntaxError` ([#150](https://github.com/babel/babylon/pull/150)) (Daniel Tschinder)
```bash
# So in the case of a missing ending curly (`}`)
Module build failed: SyntaxError: Unexpected token, expected } (30:0)
28 | }
29 |
> 30 |
| ^
```
## v6.11.4 (2016-10-03)
Temporary rollback for erroring on trailing comma with spread (#154) (Henry Zhu)
## v6.11.3 (2016-10-01)
### :eyeglasses: Spec Compliancy
Add static errors for object rest (#149) ([@danez](https://github.com/danez))
> https://github.com/sebmarkbage/ecmascript-rest-spread
Object rest copies the *rest* of properties from the right hand side `obj` starting from the left to right.
```js
let { x, y, ...z } = { x: 1, y: 2, z: 3 };
// x = 1
// y = 2
// z = { z: 3 }
```
#### New Syntax Errors:
**SyntaxError**: The rest element has to be the last element when destructuring (1:10)
```bash
> 1 | let { ...x, y, z } = { x: 1, y: 2, z: 3};
| ^
# Previous behavior:
# x = { x: 1, y: 2, z: 3 }
# y = 2
# z = 3
```
Before, this was just a more verbose way of shallow copying `obj` since it doesn't actually do what you think.
**SyntaxError**: Cannot have multiple rest elements when destructuring (1:13)
```bash
> 1 | let { x, ...y, ...z } = { x: 1, y: 2, z: 3};
| ^
# Previous behavior:
# x = 1
# y = { y: 2, z: 3 }
# z = { y: 2, z: 3 }
```
Before y and z would just be the same value anyway so there is no reason to need to have both.
**SyntaxError**: A trailing comma is not permitted after the rest element (1:16)
```js
let { x, y, ...z, } = obj;
```
The rationale for this is that the use case for trailing comma is that you can add something at the end without affecting the line above. Since a RestProperty always has to be the last property it doesn't make sense.
---
get / set are valid property names in default assignment (#142) ([@jezell](https://github.com/jezell))
```js
// valid
function something({ set = null, get = null }) {}
```
## v6.11.2 (2016-09-23)
### Bug Fix
- [#139](https://github.com/babel/babylon/issues/139) Don't do the duplicate check if not an identifier (#140) @hzoo
```js
// regression with duplicate export check
SyntaxError: ./typography.js: `undefined` has already been exported. Exported identifiers must be unique. (22:13)
20 |
21 | export const { rhythm } = typography;
> 22 | export const { TypographyStyle } = typography
```
Bail out for now, and make a change to account for destructuring in the next release.
## 6.11.1 (2016-09-22)
### Bug Fix
- [#137](https://github.com/babel/babylon/pull/137) - Fix a regression with duplicate exports - it was erroring on all keys in `Object.prototype`. @danez
```javascript
export toString from './toString';
```
```bash
`toString` has already been exported. Exported identifiers must be unique. (1:7)
> 1 | export toString from './toString';
| ^
2 |
```
## 6.11.0 (2016-09-22)
### Spec Compliancy (will break CI)
- Disallow duplicate named exports ([#107](https://github.com/babel/babylon/pull/107)) @kaicataldo
```js
// Only one default export allowed per module. (2:9)
export default function() {};
export { foo as default };
// Only one default export allowed per module. (2:0)
export default {};
export default function() {};
// `Foo` has already been exported. Exported identifiers must be unique. (2:0)
export { Foo };
export class Foo {};
```
### New Feature (Syntax)
- Add support for computed class property names ([#121](https://github.com/babel/babylon/pull/121)) @motiz88
```js
// AST
interface ClassProperty <: Node {
type: "ClassProperty";
key: Identifier;
value: Expression;
computed: boolean; // added
}
```
```js
// with "plugins": ["classProperties"]
class Foo {
[x]
['y']
}
class Bar {
[p]
[m] () {}
}
```
### Bug Fix
- Fix `static` property falling through in the declare class Flow AST ([#135](https://github.com/babel/babylon/pull/135)) @danharper
```js
declare class X {
a: number;
static b: number; // static
c: number; // this was being marked as static in the AST as well
}
```
### Polish
- Rephrase "assigning/binding to rvalue" errors to include context ([#119](https://github.com/babel/babylon/pull/119)) @motiz88
```js
// Used to error with:
// SyntaxError: Assigning to rvalue (1:0)
// Now:
// Invalid left-hand side in assignment expression (1:0)
3 = 4
// Invalid left-hand side in for-in statement (1:5)
for (+i in {});
```
### Internal
- Fix call to `this.parseMaybeAssign` with correct arguments ([#133](https://github.com/babel/babylon/pull/133)) @danez
- Add semver note to changelog ([#131](https://github.com/babel/babylon/pull/131)) @hzoo
## 6.10.0 (2016-09-19)
> We plan to include some spec compliancy bugs in patch versions. An example was the multiple default exports issue.
### Spec Compliancy
* Implement ES2016 check for simple parameter list in strict mode ([#106](https://github.com/babel/babylon/pull/106)) (Timothy Gu)
> It is a Syntax Error if ContainsUseStrict of FunctionBody is true and IsSimpleParameterList of FormalParameters is false. https://tc39.github.io/ecma262/2016/#sec-function-definitions-static-semantics-early-errors
More Context: [tc39-notes](https://github.com/rwaldron/tc39-notes/blob/master/es7/2015-07/july-29.md#611-the-scope-of-use-strict-with-respect-to-destructuring-in-parameter-lists)
For example:
```js
// this errors because it uses destructuring and default parameters
// in a function with a "use strict" directive
function a([ option1, option2 ] = []) {
"use strict";
}
```
The solution would be to use a top level "use strict" or to remove the destructuring or default parameters when using a function + "use strict" or to.
### New Feature
* Exact object type annotations for Flow plugin ([#104](https://github.com/babel/babylon/pull/104)) (Basil Hosmer)
Added to flow in https://github.com/facebook/flow/commit/c710c40aa2a115435098d6c0dfeaadb023cd39b8
Looks like:
```js
var a : {| x: number, y: string |} = { x: 0, y: 'foo' };
```
### Bug Fixes
* Include `typeParameter` location in `ArrowFunctionExpression` ([#126](https://github.com/babel/babylon/pull/126)) (Daniel Tschinder)
* Error on invalid flow type annotation with default assignment ([#122](https://github.com/babel/babylon/pull/122)) (Dan Harper)
* Fix Flow return types on arrow functions ([#124](https://github.com/babel/babylon/pull/124)) (Dan Harper)
### Misc
* Add tests for export extensions ([#127](https://github.com/babel/babylon/pull/127)) (Daniel Tschinder)
* Fix Contributing guidelines [skip ci] (Daniel Tschinder)
## 6.9.2 (2016-09-09)
The only change is to remove the `babel-runtime` dependency by compiling with Babel's ES2015 loose mode. So using babylon standalone should be smaller.
## 6.9.1 (2016-08-23)
This release contains mainly small bugfixes but also updates babylons default mode to es2017. The features for `exponentiationOperator`, `asyncFunctions` and `trailingFunctionCommas` which previously needed to be activated via plugin are now enabled by default and the plugins are now no-ops.
### Bug Fixes
- Fix issues with default object params in async functions ([#96](https://github.com/babel/babylon/pull/96)) @danez
- Fix issues with flow-types and async function ([#95](https://github.com/babel/babylon/pull/95)) @danez
- Fix arrow functions with destructuring, types & default value ([#94](https://github.com/babel/babylon/pull/94)) @danharper
- Fix declare class with qualified type identifier ([#97](https://github.com/babel/babylon/pull/97)) @danez
- Remove exponentiationOperator, asyncFunctions, trailingFunctionCommas plugins and enable them by default ([#98](https://github.com/babel/babylon/pull/98)) @danez
## 6.9.0 (2016-08-16)
### New syntax support
- Add JSX spread children ([#42](https://github.com/babel/babylon/pull/42)) @calebmer
(Be aware that React is not going to support this syntax)
```js
{...todos.map(todo => )}
```
- Add support for declare module.exports ([#72](https://github.com/babel/babylon/pull/72)) @danez
```js
declare module "foo" {
declare module.exports: {}
}
```
### New Features
- If supplied, attach filename property to comment node loc. ([#80](https://github.com/babel/babylon/pull/80)) @divmain
- Add identifier name to node loc field ([#90](https://github.com/babel/babylon/pull/90)) @kittens
### Bug Fixes
- Fix exponential operator to behave according to spec ([#75](https://github.com/babel/babylon/pull/75)) @danez
- Fix lookahead to not add comments to arrays which are not cloned ([#76](https://github.com/babel/babylon/pull/76)) @danez
- Fix accidental fall-through in Flow type parsing. ([#82](https://github.com/babel/babylon/pull/82)) @xiemaisi
- Only allow declares inside declare module ([#73](https://github.com/babel/babylon/pull/73)) @danez
- Small fix for parsing type parameter declarations ([#83](https://github.com/babel/babylon/pull/83)) @gabelevi
- Fix arrow param locations with flow types ([#57](https://github.com/babel/babylon/pull/57)) @danez
- Fixes SyntaxError position with flow optional type ([#65](https://github.com/babel/babylon/pull/65)) @danez
### Internal
- Add codecoverage to tests @danez
- Fix tests to not save expected output if we expect the test to fail @danez
- Make a shallow clone of babel for testing @danez
- chore(package): update cross-env to version 2.0.0 ([#77](https://github.com/babel/babylon/pull/77)) @greenkeeperio-bot
- chore(package): update ava to version 0.16.0 ([#86](https://github.com/babel/babylon/pull/86)) @greenkeeperio-bot
- chore(package): update babel-plugin-istanbul to version 2.0.0 ([#89](https://github.com/babel/babylon/pull/89)) @greenkeeperio-bot
- chore(package): update nyc to version 8.0.0 ([#88](https://github.com/babel/babylon/pull/88)) @greenkeeperio-bot
## 6.8.4 (2016-07-06)
### Bug Fixes
- Fix the location of params, when flow and default value used ([#68](https://github.com/babel/babylon/pull/68)) @danez
## 6.8.3 (2016-07-02)
### Bug Fixes
- Fix performance regression introduced in 6.8.2 with conditionals ([#63](https://github.com/babel/babylon/pull/63)) @danez
## 6.8.2 (2016-06-24)
### Bug Fixes
- Fix parse error with yielding jsx elements in generators `function* it() { yield ; }` ([#31](https://github.com/babel/babylon/pull/31)) @eldereal
- When cloning nodes do not clone its comments ([#24](https://github.com/babel/babylon/pull/24)) @danez
- Fix parse errors when using arrow functions with an spread element and return type `(...props): void => {}` ([#10](https://github.com/babel/babylon/pull/10)) @danez
- Fix leading comments added from previous node ([#23](https://github.com/babel/babylon/pull/23)) @danez
- Fix parse errors with flow's optional arguments `(arg?) => {}` ([#19](https://github.com/babel/babylon/pull/19)) @danez
- Support negative numeric type literals @kittens
- Remove line terminator restriction after await keyword @kittens
- Remove grouped type arrow restriction as it seems flow no longer has it @kittens
- Fix parse error with generic methods that have the name `get` or `set` `class foo { get() {} }` ([#55](https://github.com/babel/babylon/pull/55)) @vkurchatkin
- Fix parse error with arrow functions that have flow type parameter declarations `(x: T): T => x;` ([#54](https://github.com/babel/babylon/pull/54)) @gabelevi
### Documentation
- Document AST differences from ESTree ([#41](https://github.com/babel/babylon/pull/41)) @nene
- Move ast spec from babel/babel ([#46](https://github.com/babel/babylon/pull/46)) @hzoo
### Internal
- Enable skipped tests ([#16](https://github.com/babel/babylon/pull/16)) @danez
- Add script to test latest version of babylon with babel ([#21](https://github.com/babel/babylon/pull/21)) @danez
- Upgrade test runner ava @kittens
- Add missing generate-identifier-regex script @kittens
- Rename parser context types @kittens
- Add node v6 to travis testing @hzoo
- Update to Unicode v9 ([#45](https://github.com/babel/babylon/pull/45)) @mathiasbynens
## 6.8.1 (2016-06-06)
### New Feature
- Parse type parameter declarations with defaults like `type Foo = T`
### Bug Fixes
- Type parameter declarations need 1 or more type parameters.
- The existential type `*` is not a valid type parameter.
- The existential type `*` is a primary type
### Spec Compliancy
- The param list for type parameter declarations now consists of `TypeParameter` nodes
- New `TypeParameter` AST Node (replaces using the `Identifier` node before)
```
interface TypeParameter <: Node {
bound: TypeAnnotation;
default: TypeAnnotation;
name: string;
variance: "plus" | "minus";
}
```
## 6.8.0 (2016-05-02)
#### New Feature
##### Parse Method Parameter Decorators ([#12](https://github.com/babel/babylon/pull/12))
> [Method Parameter Decorators](https://goo.gl/8MmCMG) is now a TC39 [stage 0 proposal](https://github.com/tc39/ecma262/blob/master/stage0.md).
Examples:
```js
class Foo {
constructor(@foo() x, @bar({ a: 123 }) @baz() y) {}
}
export default function func(@foo() x, @bar({ a: 123 }) @baz() y) {}
var obj = {
method(@foo() x, @bar({ a: 123 }) @baz() y) {}
};
```
##### Parse for-await statements (w/ `asyncGenerators` plugin) ([#17](https://github.com/babel/babylon/pull/17))
There is also a new node type, `ForAwaitStatement`.
> [Async generators and for-await](https://github.com/tc39/proposal-async-iteration) are now a [stage 2 proposal](https://github.com/tc39/ecma262#current-proposals).
Example:
```js
async function f() {
for await (let x of y);
}
```
babylon-6.18.0/CODE_OF_CONDUCT.md 0000664 0000000 0000000 00000002617 13144646270 0016050 0 ustar 00root root 0000000 0000000 # Contributor Code of Conduct
As contributors and maintainers of this project, we pledge to respect all people who contribute through reporting issues, posting feature requests, updating documentation, submitting pull requests or patches, and other activities.
We are committed to making participation in this project a harassment-free experience for everyone, regardless of level of experience, gender, gender identity and expression, sexual orientation, disability, personal appearance, body size, race, age, or religion.
Examples of unacceptable behavior by participants include the use of sexual language or imagery, derogatory comments or personal attacks, trolling, public or private harassment, insults, or other unprofessional conduct.
Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct. Project maintainers who do not follow the Code of Conduct may be removed from the project team.
Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by opening an issue or contacting one or more of the project maintainers.
This Code of Conduct is adapted from the [Contributor Covenant](http://contributor-covenant.org), version 1.0.0, available at [http://contributor-covenant.org/version/1/0/0/](http://contributor-covenant.org/version/1/0/0/)
babylon-6.18.0/CONTRIBUTING.md 0000664 0000000 0000000 00000004107 13144646270 0015476 0 ustar 00root root 0000000 0000000 # Contributing
Contributions are always welcome, no matter how large or small. Before
contributing, please read the
[code of conduct](https://github.com/babel/babel/blob/master/CODE_OF_CONDUCT.md).
## Setup local env
To start developing on Babylon you only need to install its dependencies:
```bash
npm install
```
## Tests
### Running tests locally
To run a build, tests and perform lint/flow checks:
```bash
npm test
```
If you only want to run the tests:
```bash
npm run test-only
```
Note, this does not actually run a build, so you may have to call `npm run build` after
performing any changes.
### Checking code coverage locally
To generate code coverage, be sure to set `BABEL_ENV=test` so that code is instrumented during
the rollup build.
```bash
BABEL_ENV=test npm run build && npm run test-ci
```
### Writing tests
Writing tests for Babylon is very
[similar to Babel](https://github.com/babel/babel/blob/master/CONTRIBUTING.md#writing-tests).
Inside the `tests/fixtures` folder are categories/groupings of test fixtures (es2015, flow,
etc.). To add a test, create a folder under one of these groupings (or create a new one) with a
descriptive name, and add the following:
* Create an `actual.js` file that contains the code you want Babylon to parse.
* Add an `expected.json` file with the expected parser output. For added convenience, if
there is no `expected.json` present, the test runner will generate one for you.
## Cross repository changes
If you are making changes to Babylon which make it necessary to also change things in Babel
you will want to link both repositories together. This can be done by doing the following
(assuming you have both Babel and Babylon already checked out):
```bash
cd babylon/
npm link
npm run build
cd ../babel/
make bootstrap
npm link babylon
cd packages/babel-core/
npm link babylon
cd ../../packages/babel-template/
npm link babylon
cd ../../packages/babel-traverse/
npm link babylon
cd ../../packages/babel-generator/
npm link babylon
cd ../..
make build
make test
```
From now on Babel will use your local checkout of Babylon for its tests.
babylon-6.18.0/LICENSE 0000664 0000000 0000000 00000002076 13144646270 0014255 0 ustar 00root root 0000000 0000000 Copyright (C) 2012-2014 by various contributors (see AUTHORS)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
babylon-6.18.0/Makefile 0000664 0000000 0000000 00000002207 13144646270 0014704 0 ustar 00root root 0000000 0000000 MAKEFLAGS = -j1
export NODE_ENV = test
.PHONY: make clean test test-only test-cov test-clean test-travis publish build bootstrap publish-core publish-runtime build-website build-core watch-core build-core-test clean-core prepublish
clean: ; rm -rf ./build
bootstrap-babel: clean
mkdir ./build
git clone --depth=1 --branch=master https://github.com/babel/babel.git ./build/babel
cd ./build/babel; \
make bootstrap
find ./build/babel/packages -type d -name 'babylon' -prune -exec rm -rf '{}' \; -exec ln -s '../../../../../' '{}' \;
test-babel:
BABEL_ENV=test npm run build
# in case babel ever switches to nyc: filter its config out of package.json
cd ./build/babel; \
jq "del(.nyc)" package.json > package.nonyc.json; \
mv -f package.nonyc.json package.json; \
../../node_modules/.bin/nyc --no-instrument --no-source-map --report-dir ../../coverage node_modules/mocha/bin/_mocha `scripts/_get-test-directories.sh` --opts test/mocha.opts; \
mv .nyc_output ../../.nyc_output
bootstrap-flow: clean
mkdir ./build
git clone --depth=1 --branch=master https://github.com/facebook/flow.git ./build/flow
test-flow:
node scripts/run_flow_tests.js
babylon-6.18.0/README.md 0000664 0000000 0000000 00000013406 13144646270 0014526 0 ustar 00root root 0000000 0000000
Babylon is a JavaScript parser used in Babel .
- The latest ECMAScript version enabled by default (ES2017).
- Comment attachment.
- Support for JSX and Flow.
- Support for experimental language proposals (accepting PRs for anything at least [stage-0](https://github.com/tc39/proposals/blob/master/stage-0-proposals.md)).
## Credits
Heavily based on [acorn](https://github.com/marijnh/acorn) and [acorn-jsx](https://github.com/RReverser/acorn-jsx),
thanks to the awesome work of [@RReverser](https://github.com/RReverser) and [@marijnh](https://github.com/marijnh).
Significant diversions are expected to occur in the future such as streaming, EBNF definitions, sweet.js integration, interspatial parsing and more.
## API
### `babylon.parse(code, [options])`
### `babylon.parseExpression(code, [options])`
`parse()` parses the provided `code` as an entire ECMAScript program, while
`parseExpression()` tries to parse a single Expression with performance in
mind. When in doubt, use `.parse()`.
### Options
- **allowImportExportEverywhere**: By default, `import` and `export`
declarations can only appear at a program's top level. Setting this
option to `true` allows them anywhere where a statement is allowed.
- **allowReturnOutsideFunction**: By default, a return statement at
the top level raises an error. Set this to `true` to accept such
code.
- **allowSuperOutsideMethod**: TODO
- **sourceType**: Indicate the mode the code should be parsed in. Can be
either `"script"` or `"module"`.
- **sourceFilename**: Correlate output AST nodes with their source filename. Useful when generating code and source maps from the ASTs of multiple input files.
- **startLine**: By default, the first line of code parsed is treated as line 1. You can provide a line number to alternatively start with. Useful for integration with other source tools.
- **plugins**: Array containing the plugins that you want to enable.
- **strictMode**: TODO
### Output
Babylon generates AST according to [Babel AST format][].
It is based on [ESTree spec][] with the following deviations:
> There is now an `estree` plugin which reverts these deviations
- [Literal][] token is replaced with [StringLiteral][], [NumericLiteral][], [BooleanLiteral][], [NullLiteral][], [RegExpLiteral][]
- [Property][] token is replaced with [ObjectProperty][] and [ObjectMethod][]
- [MethodDefinition][] is replaced with [ClassMethod][]
- [Program][] and [BlockStatement][] contain additional `directives` field with [Directive][] and [DirectiveLiteral][]
- [ClassMethod][], [ObjectProperty][], and [ObjectMethod][] value property's properties in [FunctionExpression][] is coerced/brought into the main method node.
AST for JSX code is based on [Facebook JSX AST][] with the addition of one node type:
- `JSXText`
[Babel AST format]: https://github.com/babel/babylon/blob/master/ast/spec.md
[ESTree spec]: https://github.com/estree/estree
[Literal]: https://github.com/estree/estree/blob/master/es5.md#literal
[Property]: https://github.com/estree/estree/blob/master/es5.md#property
[MethodDefinition]: https://github.com/estree/estree/blob/master/es2015.md#methoddefinition
[StringLiteral]: https://github.com/babel/babylon/blob/master/ast/spec.md#stringliteral
[NumericLiteral]: https://github.com/babel/babylon/blob/master/ast/spec.md#numericliteral
[BooleanLiteral]: https://github.com/babel/babylon/blob/master/ast/spec.md#booleanliteral
[NullLiteral]: https://github.com/babel/babylon/blob/master/ast/spec.md#nullliteral
[RegExpLiteral]: https://github.com/babel/babylon/blob/master/ast/spec.md#regexpliteral
[ObjectProperty]: https://github.com/babel/babylon/blob/master/ast/spec.md#objectproperty
[ObjectMethod]: https://github.com/babel/babylon/blob/master/ast/spec.md#objectmethod
[ClassMethod]: https://github.com/babel/babylon/blob/master/ast/spec.md#classmethod
[Program]: https://github.com/babel/babylon/blob/master/ast/spec.md#programs
[BlockStatement]: https://github.com/babel/babylon/blob/master/ast/spec.md#blockstatement
[Directive]: https://github.com/babel/babylon/blob/master/ast/spec.md#directive
[DirectiveLiteral]: https://github.com/babel/babylon/blob/master/ast/spec.md#directiveliteral
[FunctionExpression]: https://github.com/babel/babylon/blob/master/ast/spec.md#functionexpression
[Facebook JSX AST]: https://github.com/facebook/jsx/blob/master/AST.md
### Semver
Babylon follows semver in most situations. The only thing to note is that some spec-compliancy bug fixes may be released under patch versions.
For example: We push a fix to early error on something like [#107](https://github.com/babel/babylon/pull/107) - multiple default exports per file. That would be considered a bug fix even though it would cause a build to fail.
### Example
```javascript
require("babylon").parse("code", {
// parse in strict mode and allow module declarations
sourceType: "module",
plugins: [
// enable jsx and flow syntax
"jsx",
"flow"
]
});
```
### Plugins
- `estree`
- `jsx`
- `flow`
- `doExpressions`
- `objectRestSpread`
- `decorators` (Based on an outdated version of the Decorators proposal. Will be removed in a future version of `Babylon`)
- `classProperties`
- `exportExtensions`
- `asyncGenerators`
- `functionBind`
- `functionSent`
- `dynamicImport`
- `templateInvalidEscapes`
babylon-6.18.0/ast/ 0000775 0000000 0000000 00000000000 13144646270 0014032 5 ustar 00root root 0000000 0000000 babylon-6.18.0/ast/flow.md 0000664 0000000 0000000 00000000000 13144646270 0015311 0 ustar 00root root 0000000 0000000 babylon-6.18.0/ast/jsx.md 0000664 0000000 0000000 00000000000 13144646270 0015146 0 ustar 00root root 0000000 0000000 babylon-6.18.0/ast/spec.md 0000664 0000000 0000000 00000056001 13144646270 0015310 0 ustar 00root root 0000000 0000000 These are the core Babylon AST node types.
- [Node objects](#node-objects)
- [Identifier](#identifier)
- [Literals](#literals)
- [RegExpLiteral](#regexpliteral)
- [NullLiteral](#nullliteral)
- [StringLiteral](#stringliteral)
- [BooleanLiteral](#booleanliteral)
- [NumericLiteral](#numericliteral)
- [Programs](#programs)
- [Functions](#functions)
- [Statements](#statements)
- [ExpressionStatement](#expressionstatement)
- [BlockStatement](#blockstatement)
- [EmptyStatement](#emptystatement)
- [DebuggerStatement](#debuggerstatement)
- [WithStatement](#withstatement)
- [Control flow](#control-flow)
- [ReturnStatement](#returnstatement)
- [LabeledStatement](#labeledstatement)
- [BreakStatement](#breakstatement)
- [ContinueStatement](#continuestatement)
- [Choice](#choice)
- [IfStatement](#ifstatement)
- [SwitchStatement](#switchstatement)
- [SwitchCase](#switchcase)
- [Exceptions](#exceptions)
- [ThrowStatement](#throwstatement)
- [TryStatement](#trystatement)
- [CatchClause](#catchclause)
- [Loops](#loops)
- [WhileStatement](#whilestatement)
- [DoWhileStatement](#dowhilestatement)
- [ForStatement](#forstatement)
- [ForInStatement](#forinstatement)
- [ForOfStatement](#forofstatement)
- [ForAwaitStatement](#forawaitstatement)
- [Declarations](#declarations)
- [FunctionDeclaration](#functiondeclaration)
- [VariableDeclaration](#variabledeclaration)
- [VariableDeclarator](#variabledeclarator)
- [Misc](#misc)
- [Decorator](#decorator)
- [Directive](#directive)
- [DirectiveLiteral](#directiveliteral)
- [Expressions](#expressions)
- [Super](#super)
- [Import](#import)
- [ThisExpression](#thisexpression)
- [ArrowFunctionExpression](#arrowfunctionexpression)
- [YieldExpression](#yieldexpression)
- [AwaitExpression](#awaitexpression)
- [ArrayExpression](#arrayexpression)
- [ObjectExpression](#objectexpression)
- [ObjectMember](#objectmember)
- [ObjectProperty](#objectproperty)
- [ObjectMethod](#objectmethod)
- [RestProperty](#restproperty)
- [SpreadProperty](#spreadproperty)
- [FunctionExpression](#functionexpression)
- [Unary operations](#unary-operations)
- [UnaryExpression](#unaryexpression)
- [UnaryOperator](#unaryoperator)
- [UpdateExpression](#updateexpression)
- [UpdateOperator](#updateoperator)
- [Binary operations](#binary-operations)
- [BinaryExpression](#binaryexpression)
- [BinaryOperator](#binaryoperator)
- [AssignmentExpression](#assignmentexpression)
- [AssignmentOperator](#assignmentoperator)
- [LogicalExpression](#logicalexpression)
- [LogicalOperator](#logicaloperator)
- [SpreadElement](#spreadelement)
- [MemberExpression](#memberexpression)
- [BindExpression](#bindexpression)
- [ConditionalExpression](#conditionalexpression)
- [CallExpression](#callexpression)
- [NewExpression](#newexpression)
- [SequenceExpression](#sequenceexpression)
- [DoExpression](#doexpression)
- [Template Literals](#template-literals)
- [TemplateLiteral](#templateliteral)
- [TaggedTemplateExpression](#taggedtemplateexpression)
- [TemplateElement](#templateelement)
- [Patterns](#patterns)
- [ObjectPattern](#objectpattern)
- [ArrayPattern](#arraypattern)
- [RestElement](#restelement)
- [AssignmentPattern](#assignmentpattern)
- [Classes](#classes)
- [ClassBody](#classbody)
- [ClassMethod](#classmethod)
- [ClassProperty](#classproperty)
- [ClassDeclaration](#classdeclaration)
- [ClassExpression](#classexpression)
- [MetaProperty](#metaproperty)
- [Modules](#modules)
- [ModuleDeclaration](#moduledeclaration)
- [ModuleSpecifier](#modulespecifier)
- [Imports](#imports)
- [ImportDeclaration](#importdeclaration)
- [ImportSpecifier](#importspecifier)
- [ImportDefaultSpecifier](#importdefaultspecifier)
- [ImportNamespaceSpecifier](#importnamespacespecifier)
- [Exports](#exports)
- [ExportNamedDeclaration](#exportnameddeclaration)
- [ExportSpecifier](#exportspecifier)
- [ExportDefaultDeclaration](#exportdefaultdeclaration)
- [ExportAllDeclaration](#exportalldeclaration)
# Node objects
AST nodes are represented as `Node` objects, which may have any prototype inheritance but which implement the following interface:
```js
interface Node {
type: string;
loc: SourceLocation | null;
}
```
The `type` field is a string representing the AST variant type. Each subtype of `Node` is documented below with the specific string of its `type` field. You can use this field to determine which interface a node implements.
The `loc` field represents the source location information of the node. If the node contains no information about the source location, the field is `null`; otherwise it is an object consisting of a start position (the position of the first character of the parsed source region) and an end position (the position of the first character after the parsed source region):
```js
interface SourceLocation {
source: string | null;
start: Position;
end: Position;
}
```
Each `Position` object consists of a `line` number (1-indexed) and a `column` number (0-indexed):
```js
interface Position {
line: number; // >= 1
column: number; // >= 0
}
```
# Identifier
```js
interface Identifier <: Expression, Pattern {
type: "Identifier";
name: string;
}
```
An identifier. Note that an identifier may be an expression or a destructuring pattern.
# Literals
```js
interface Literal <: Expression { }
```
A literal token. May or may not represent an expression.
## RegExpLiteral
```js
interface RegExpLiteral <: Literal {
type: "RegExpLiteral";
pattern: string;
flags: string;
}
```
## NullLiteral
```js
interface NullLiteral <: Literal {
type: "NullLiteral";
}
```
## StringLiteral
```js
interface StringLiteral <: Literal {
type: "StringLiteral";
value: string;
}
```
## BooleanLiteral
```js
interface BooleanLiteral <: Literal {
type: "BooleanLiteral";
value: boolean;
}
```
## NumericLiteral
```js
interface NumericLiteral <: Literal {
type: "NumericLiteral";
value: number;
}
```
# Programs
```js
interface Program <: Node {
type: "Program";
sourceType: "script" | "module";
body: [ Statement | ModuleDeclaration ];
directives: [ Directive ];
}
```
A complete program source tree.
Parsers must specify `sourceType` as `"module"` if the source has been parsed as an ES6 module. Otherwise, `sourceType` must be `"script"`.
# Functions
```js
interface Function <: Node {
id: Identifier | null;
params: [ Pattern ];
body: BlockStatement;
generator: boolean;
async: boolean;
}
```
A function [declaration](#functiondeclaration) or [expression](#functionexpression).
# Statements
```js
interface Statement <: Node { }
```
Any statement.
## ExpressionStatement
```js
interface ExpressionStatement <: Statement {
type: "ExpressionStatement";
expression: Expression;
}
```
An expression statement, i.e., a statement consisting of a single expression.
## BlockStatement
```js
interface BlockStatement <: Statement {
type: "BlockStatement";
body: [ Statement ];
directives: [ Directive ];
}
```
A block statement, i.e., a sequence of statements surrounded by braces.
## EmptyStatement
```js
interface EmptyStatement <: Statement {
type: "EmptyStatement";
}
```
An empty statement, i.e., a solitary semicolon.
## DebuggerStatement
```js
interface DebuggerStatement <: Statement {
type: "DebuggerStatement";
}
```
A `debugger` statement.
## WithStatement
```js
interface WithStatement <: Statement {
type: "WithStatement";
object: Expression;
body: Statement;
}
```
A `with` statement.
## Control flow
### ReturnStatement
```js
interface ReturnStatement <: Statement {
type: "ReturnStatement";
argument: Expression | null;
}
```
A `return` statement.
### LabeledStatement
```js
interface LabeledStatement <: Statement {
type: "LabeledStatement";
label: Identifier;
body: Statement;
}
```
A labeled statement, i.e., a statement prefixed by a `break`/`continue` label.
### BreakStatement
```js
interface BreakStatement <: Statement {
type: "BreakStatement";
label: Identifier | null;
}
```
A `break` statement.
### ContinueStatement
```js
interface ContinueStatement <: Statement {
type: "ContinueStatement";
label: Identifier | null;
}
```
A `continue` statement.
## Choice
### IfStatement
```js
interface IfStatement <: Statement {
type: "IfStatement";
test: Expression;
consequent: Statement;
alternate: Statement | null;
}
```
An `if` statement.
### SwitchStatement
```js
interface SwitchStatement <: Statement {
type: "SwitchStatement";
discriminant: Expression;
cases: [ SwitchCase ];
}
```
A `switch` statement.
#### SwitchCase
```js
interface SwitchCase <: Node {
type: "SwitchCase";
test: Expression | null;
consequent: [ Statement ];
}
```
A `case` (if `test` is an `Expression`) or `default` (if `test === null`) clause in the body of a `switch` statement.
## Exceptions
### ThrowStatement
```js
interface ThrowStatement <: Statement {
type: "ThrowStatement";
argument: Expression;
}
```
A `throw` statement.
### TryStatement
```js
interface TryStatement <: Statement {
type: "TryStatement";
block: BlockStatement;
handler: CatchClause | null;
finalizer: BlockStatement | null;
}
```
A `try` statement. If `handler` is `null` then `finalizer` must be a `BlockStatement`.
#### CatchClause
```js
interface CatchClause <: Node {
type: "CatchClause";
param: Pattern;
body: BlockStatement;
}
```
A `catch` clause following a `try` block.
## Loops
### WhileStatement
```js
interface WhileStatement <: Statement {
type: "WhileStatement";
test: Expression;
body: Statement;
}
```
A `while` statement.
### DoWhileStatement
```js
interface DoWhileStatement <: Statement {
type: "DoWhileStatement";
body: Statement;
test: Expression;
}
```
A `do`/`while` statement.
### ForStatement
```js
interface ForStatement <: Statement {
type: "ForStatement";
init: VariableDeclaration | Expression | null;
test: Expression | null;
update: Expression | null;
body: Statement;
}
```
A `for` statement.
### ForInStatement
```js
interface ForInStatement <: Statement {
type: "ForInStatement";
left: VariableDeclaration | Expression;
right: Expression;
body: Statement;
}
```
A `for`/`in` statement.
## ForOfStatement
```js
interface ForOfStatement <: ForInStatement {
type: "ForOfStatement";
}
```
A `for`/`await` statement.
## ForAwaitStatement
```js
interface ForAwaitStatement <: ForInStatement {
type: "ForAwaitStatement";
}
```
# Declarations
```js
interface Declaration <: Statement { }
```
Any declaration node. Note that declarations are considered statements; this is because declarations can appear in any statement context.
## FunctionDeclaration
```js
interface FunctionDeclaration <: Function, Declaration {
type: "FunctionDeclaration";
id: Identifier;
}
```
A function declaration. Note that unlike in the parent interface `Function`, the `id` cannot be `null`.
## VariableDeclaration
```js
interface VariableDeclaration <: Declaration {
type: "VariableDeclaration";
declarations: [ VariableDeclarator ];
kind: "var" | "let" | "const";
}
```
A variable declaration.
### VariableDeclarator
```js
interface VariableDeclarator <: Node {
type: "VariableDeclarator";
id: Pattern;
init: Expression | null;
}
```
A variable declarator.
# Misc
## Decorator
```js
interface Decorator <: Node {
type: "Decorator";
expression: Expression;
}
```
## Directive
```js
interface Directive <: Node {
type: "Directive";
value: DirectiveLiteral;
}
```
## DirectiveLiteral
```js
interface DirectiveLiteral <: StringLiteral {
type: "DirectiveLiteral";
}
```
# Expressions
```js
interface Expression <: Node { }
```
Any expression node. Since the left-hand side of an assignment may be any expression in general, an expression can also be a pattern.
## Super
```js
interface Super <: Node {
type: "Super";
}
```
A `super` pseudo-expression.
## Import
```js
interface Import <: Node {
type: "Import";
}
```
A `import` pseudo-expression.
## ThisExpression
```js
interface ThisExpression <: Expression {
type: "ThisExpression";
}
```
A `this` expression.
## ArrowFunctionExpression
```js
interface ArrowFunctionExpression <: Function, Expression {
type: "ArrowFunctionExpression";
body: BlockStatement | Expression;
expression: boolean;
}
```
A fat arrow function expression, e.g., `let foo = (bar) => { /* body */ }`.
## YieldExpression
```js
interface YieldExpression <: Expression {
type: "YieldExpression";
argument: Expression | null;
delegate: boolean;
}
```
A `yield` expression.
## AwaitExpression
```js
interface AwaitExpression <: Expression {
type: "AwaitExpression";
argument: Expression | null;
}
```
A `await` expression.
## ArrayExpression
```js
interface ArrayExpression <: Expression {
type: "ArrayExpression";
elements: [ Expression | SpreadElement | null ];
}
```
An array expression.
## ObjectExpression
```js
interface ObjectExpression <: Expression {
type: "ObjectExpression";
properties: [ ObjectProperty | ObjectMethod | SpreadProperty ];
}
```
An object expression.
### ObjectMember
```js
interface ObjectMember <: Node {
key: Expression;
computed: boolean;
value: Expression;
decorators: [ Decorator ];
}
```
#### ObjectProperty
```js
interface ObjectProperty <: ObjectMember {
type: "ObjectProperty";
shorthand: boolean;
}
```
#### ObjectMethod
```js
interface ObjectMethod <: ObjectMember, Function {
type: "ObjectMethod";
kind: "get" | "set" | "method";
}
```
## RestProperty
```js
interface RestProperty <: Node {
type: "RestProperty";
argument: Expression;
}
```
## SpreadProperty
```js
interface SpreadProperty <: Node {
type: "SpreadProperty";
argument: Expression;
}
```
## FunctionExpression
```js
interface FunctionExpression <: Function, Expression {
type: "FunctionExpression";
}
```
A `function` expression.
## Unary operations
### UnaryExpression
```js
interface UnaryExpression <: Expression {
type: "UnaryExpression";
operator: UnaryOperator;
prefix: boolean;
argument: Expression;
}
```
A unary operator expression.
#### UnaryOperator
```js
enum UnaryOperator {
"-" | "+" | "!" | "~" | "typeof" | "void" | "delete"
}
```
A unary operator token.
### UpdateExpression
```js
interface UpdateExpression <: Expression {
type: "UpdateExpression";
operator: UpdateOperator;
argument: Expression;
prefix: boolean;
}
```
An update (increment or decrement) operator expression.
#### UpdateOperator
```js
enum UpdateOperator {
"++" | "--"
}
```
An update (increment or decrement) operator token.
## Binary operations
### BinaryExpression
```js
interface BinaryExpression <: Expression {
type: "BinaryExpression";
operator: BinaryOperator;
left: Expression;
right: Expression;
}
```
A binary operator expression.
#### BinaryOperator
```js
enum BinaryOperator {
"==" | "!=" | "===" | "!=="
| "<" | "<=" | ">" | ">="
| "<<" | ">>" | ">>>"
| "+" | "-" | "*" | "/" | "%"
| "|" | "^" | "&" | "in"
| "instanceof"
}
```
A binary operator token.
### AssignmentExpression
```js
interface AssignmentExpression <: Expression {
type: "AssignmentExpression";
operator: AssignmentOperator;
left: Pattern | Expression;
right: Expression;
}
```
An assignment operator expression.
#### AssignmentOperator
```js
enum AssignmentOperator {
"=" | "+=" | "-=" | "*=" | "/=" | "%="
| "<<=" | ">>=" | ">>>="
| "|=" | "^=" | "&="
}
```
An assignment operator token.
### LogicalExpression
```js
interface LogicalExpression <: Expression {
type: "LogicalExpression";
operator: LogicalOperator;
left: Expression;
right: Expression;
}
```
A logical operator expression.
#### LogicalOperator
```js
enum LogicalOperator {
"||" | "&&"
}
```
A logical operator token.
### SpreadElement
```js
interface SpreadElement <: Node {
type: "SpreadElement";
argument: Expression;
}
```
### MemberExpression
```js
interface MemberExpression <: Expression, Pattern {
type: "MemberExpression";
object: Expression | Super;
property: Expression;
computed: boolean;
}
```
A member expression. If `computed` is `true`, the node corresponds to a computed (`a[b]`) member expression and `property` is an `Expression`. If `computed` is `false`, the node corresponds to a static (`a.b`) member expression and `property` is an `Identifier`.
### BindExpression
```js
interface BindExpression <: Expression {
type: "BindExpression";
object: [ Expression | null ];
callee: [ Expression ]
}
```
If `object` is `null`, then `callee` should be a `MemberExpression`.
## ConditionalExpression
```js
interface ConditionalExpression <: Expression {
type: "ConditionalExpression";
test: Expression;
alternate: Expression;
consequent: Expression;
}
```
A conditional expression, i.e., a ternary `?`/`:` expression.
## CallExpression
```js
interface CallExpression <: Expression {
type: "CallExpression";
callee: Expression | Super | Import;
arguments: [ Expression | SpreadElement ];
}
```
A function or method call expression.
## NewExpression
```js
interface NewExpression <: CallExpression {
type: "NewExpression";
}
```
A `new` expression.
## SequenceExpression
```js
interface SequenceExpression <: Expression {
type: "SequenceExpression";
expressions: [ Expression ];
}
```
A sequence expression, i.e., a comma-separated sequence of expressions.
## DoExpression
```js
interface DoExpression <: Expression {
type: "DoExpression";
body: BlockStatement
}
```
# Template Literals
## TemplateLiteral
```js
interface TemplateLiteral <: Expression {
type: "TemplateLiteral";
quasis: [ TemplateElement ];
expressions: [ Expression ];
}
```
## TaggedTemplateExpression
```js
interface TaggedTemplateExpression <: Expression {
type: "TaggedTemplateExpression";
tag: Expression;
quasi: TemplateLiteral;
}
```
## TemplateElement
```js
interface TemplateElement <: Node {
type: "TemplateElement";
tail: boolean;
value: {
cooked: string | null;
raw: string;
};
}
```
# Patterns
```js
interface Pattern <: Node { }
```
## ObjectPattern
```js
interface AssignmentProperty <: ObjectProperty {
value: Pattern;
}
interface ObjectPattern <: Pattern {
type: "ObjectPattern";
properties: [ AssignmentProperty | RestProperty ];
}
```
## ArrayPattern
```js
interface ArrayPattern <: Pattern {
type: "ArrayPattern";
elements: [ Pattern | null ];
}
```
## RestElement
```js
interface RestElement <: Pattern {
type: "RestElement";
argument: Pattern;
}
```
## AssignmentPattern
```js
interface AssignmentPattern <: Pattern {
type: "AssignmentPattern";
left: Pattern;
right: Expression;
}
```
# Classes
```js
interface Class <: Node {
id: Identifier | null;
superClass: Expression | null;
body: ClassBody;
decorators: [ Decorator ];
}
```
## ClassBody
```js
interface ClassBody <: Node {
type: "ClassBody";
body: [ ClassMethod | ClassProperty ];
}
```
## ClassMethod
```js
interface ClassMethod <: Node {
type: "ClassMethod";
key: Expression;
value: FunctionExpression;
kind: "constructor" | "method" | "get" | "set";
computed: boolean;
static: boolean;
decorators: [ Decorator ];
}
```
## ClassProperty
```js
interface ClassProperty <: Node {
type: "ClassProperty";
key: Identifier;
value: Expression;
computed: boolean;
}
```
## ClassDeclaration
```js
interface ClassDeclaration <: Class, Declaration {
type: "ClassDeclaration";
id: Identifier;
}
```
## ClassExpression
```js
interface ClassExpression <: Class, Expression {
type: "ClassExpression";
}
```
## MetaProperty
```js
interface MetaProperty <: Expression {
type: "MetaProperty";
meta: Identifier;
property: Identifier;
}
```
# Modules
## ModuleDeclaration
```js
interface ModuleDeclaration <: Node { }
```
A module `import` or `export` declaration.
## ModuleSpecifier
```js
interface ModuleSpecifier <: Node {
local: Identifier;
}
```
A specifier in an import or export declaration.
## Imports
### ImportDeclaration
```js
interface ImportDeclaration <: ModuleDeclaration {
type: "ImportDeclaration";
specifiers: [ ImportSpecifier | ImportDefaultSpecifier | ImportNamespaceSpecifier ];
source: Literal;
}
```
An import declaration, e.g., `import foo from "mod";`.
### ImportSpecifier
```js
interface ImportSpecifier <: ModuleSpecifier {
type: "ImportSpecifier";
imported: Identifier;
}
```
An imported variable binding, e.g., `{foo}` in `import {foo} from "mod"` or `{foo as bar}` in `import {foo as bar} from "mod"`. The `imported` field refers to the name of the export imported from the module. The `local` field refers to the binding imported into the local module scope. If it is a basic named import, such as in `import {foo} from "mod"`, both `imported` and `local` are equivalent `Identifier` nodes; in this case an `Identifier` node representing `foo`. If it is an aliased import, such as in `import {foo as bar} from "mod"`, the `imported` field is an `Identifier` node representing `foo`, and the `local` field is an `Identifier` node representing `bar`.
### ImportDefaultSpecifier
```js
interface ImportDefaultSpecifier <: ModuleSpecifier {
type: "ImportDefaultSpecifier";
}
```
A default import specifier, e.g., `foo` in `import foo from "mod.js"`.
### ImportNamespaceSpecifier
```js
interface ImportNamespaceSpecifier <: ModuleSpecifier {
type: "ImportNamespaceSpecifier";
}
```
A namespace import specifier, e.g., `* as foo` in `import * as foo from "mod.js"`.
## Exports
### ExportNamedDeclaration
```js
interface ExportNamedDeclaration <: ModuleDeclaration {
type: "ExportNamedDeclaration";
declaration: Declaration | null;
specifiers: [ ExportSpecifier ];
source: Literal | null;
}
```
An export named declaration, e.g., `export {foo, bar};`, `export {foo} from "mod";`, `export var foo = 1;` or `export * as foo from "bar";`.
_Note: Having `declaration` populated with non-empty `specifiers` or non-null `source` results in an invalid state._
### ExportSpecifier
```js
interface ExportSpecifier <: ModuleSpecifier {
type: "ExportSpecifier";
exported: Identifier;
}
```
An exported variable binding, e.g., `{foo}` in `export {foo}` or `{bar as foo}` in `export {bar as foo}`. The `exported` field refers to the name exported in the module. The `local` field refers to the binding into the local module scope. If it is a basic named export, such as in `export {foo}`, both `exported` and `local` are equivalent `Identifier` nodes; in this case an `Identifier` node representing `foo`. If it is an aliased export, such as in `export {bar as foo}`, the `exported` field is an `Identifier` node representing `foo`, and the `local` field is an `Identifier` node representing `bar`.
### ExportDefaultDeclaration
```js
interface ExportDefaultDeclaration <: ModuleDeclaration {
type: "ExportDefaultDeclaration";
declaration: Declaration | Expression;
}
```
An export default declaration, e.g., `export default function () {};` or `export default 1;`.
### ExportAllDeclaration
```js
interface ExportAllDeclaration <: ModuleDeclaration {
type: "ExportAllDeclaration";
source: Literal;
}
```
An export batch declaration, e.g., `export * from "mod";`.
babylon-6.18.0/bin/ 0000775 0000000 0000000 00000000000 13144646270 0014013 5 ustar 00root root 0000000 0000000 babylon-6.18.0/bin/babylon.js 0000775 0000000 0000000 00000000525 13144646270 0016004 0 ustar 00root root 0000000 0000000 #!/usr/bin/env node
/* eslint no-var: 0 */
var babylon = require("..");
var fs = require("fs");
var filename = process.argv[2];
if (!filename) {
console.error("no filename specified");
process.exit(0);
}
var file = fs.readFileSync(filename, "utf8");
var ast = babylon.parse(file);
console.log(JSON.stringify(ast, null, " "));
babylon-6.18.0/bin/generate-identifier-regex.js 0000664 0000000 0000000 00000003413 13144646270 0021374 0 ustar 00root root 0000000 0000000 "use strict";
// Which Unicode version should be used?
const version = "9.0.0";
const start = require("unicode-" + version + "/Binary_Property/ID_Start/code-points.js")
.filter(function(ch) { return ch > 0x7f; });
let last = -1;
const cont = [0x200c, 0x200d].concat(
require("unicode-" + version + "/Binary_Property/ID_Continue/code-points.js")
.filter(function(ch) {
return ch > 0x7f && search(start, ch, last + 1) == -1;
})
);
function search(arr, ch, starting) {
for (let i = starting; arr[i] <= ch && i < arr.length; last = i++)
if (arr[i] === ch)
return i;
return -1;
}
function pad(str, width) {
while (str.length < width) str = "0" + str;
return str;
}
function esc(code) {
const hex = code.toString(16);
if (hex.length <= 2) return "\\x" + pad(hex, 2);
else return "\\u" + pad(hex, 4);
}
function generate(chars) {
const astral = [];
let re = "";
for (let i = 0, at = 0x10000; i < chars.length; i++) {
const from = chars[i];
let to = from;
while (i < chars.length - 1 && chars[i + 1] == to + 1) {
i++;
to++;
}
if (to <= 0xffff) {
if (from == to) re += esc(from);
else if (from + 1 == to) re += esc(from) + esc(to);
else re += esc(from) + "-" + esc(to);
} else {
astral.push(from - at, to - from);
at = to;
}
}
return { nonASCII: re, astral: astral };
}
const startData = generate(start);
const contData = generate(cont);
console.log("let nonASCIIidentifierStartChars = \"" + startData.nonASCII + "\";");
console.log("let nonASCIIidentifierChars = \"" + contData.nonASCII + "\";");
console.log("const astralIdentifierStartCodes = " + JSON.stringify(startData.astral) + ";");
console.log("const astralIdentifierCodes = " + JSON.stringify(contData.astral) + ";");
babylon-6.18.0/codecov.yml 0000664 0000000 0000000 00000000100 13144646270 0015377 0 ustar 00root root 0000000 0000000 coverage:
parsers:
javascript:
enable_partials: yes
babylon-6.18.0/package.json 0000664 0000000 0000000 00000004254 13144646270 0015536 0 ustar 00root root 0000000 0000000 {
"name": "babylon",
"version": "6.18.0",
"description": "A JavaScript parser",
"author": "Sebastian McKenzie ",
"homepage": "https://babeljs.io/",
"license": "MIT",
"keywords": [
"babel",
"javascript",
"parser",
"babylon"
],
"repository": "https://github.com/babel/babylon",
"main": "lib/index.js",
"files": [
"bin",
"lib"
],
"devDependencies": {
"ava": "^0.17.0",
"babel-cli": "^6.14.0",
"babel-eslint": "^7.0.0",
"babel-helper-fixtures": "^6.9.0",
"babel-plugin-external-helpers": "^6.18.0",
"babel-plugin-istanbul": "^3.0.0",
"babel-plugin-transform-flow-strip-types": "^6.14.0",
"babel-preset-es2015": "^6.14.0",
"babel-preset-stage-0": "^6.5.0",
"chalk": "^1.1.3",
"codecov": "^1.0.1",
"cross-env": "^2.0.0",
"eslint": "^3.7.1",
"eslint-config-babel": "^6.0.0",
"eslint-plugin-flowtype": "^2.20.0",
"flow-bin": "^0.42.0",
"nyc": "^10.0.0",
"rimraf": "^2.5.4",
"rollup": "^0.41.0",
"rollup-plugin-babel": "^2.6.1",
"rollup-plugin-node-resolve": "^2.0.0",
"rollup-watch": "^3.2.2",
"unicode-9.0.0": "~0.7.0"
},
"bin": {
"babylon": "./bin/babylon.js"
},
"scripts": {
"build": "npm run clean && rollup -c",
"coverage": "nyc report --reporter=json && codecov -f coverage/coverage-final.json",
"lint": "eslint src bin",
"clean": "rimraf lib",
"flow": "flow",
"prepublish": "cross-env BABEL_ENV=production npm run build",
"preversion": "npm run test && npm run changelog",
"test": "npm run lint && npm run flow && npm run build -- -m && npm run test-only",
"test-only": "ava",
"test-ci": "nyc npm run test-only",
"changelog": "git log `git describe --tags --abbrev=0`..HEAD --pretty=format:' * %s (%an)' | grep -v 'Merge pull request'",
"watch": "npm run clean && rollup -c --watch"
},
"nyc": {
"include": [
"src/**/*.js",
"bin/**/*.js"
],
"sourceMap": false,
"instrument": false
},
"ava": {
"files": [
"test/*.js"
],
"source": [
"src/**/*.js",
"bin/**/*.js"
]
},
"greenkeeper": {
"ignore": [
"cross-env"
]
}
}
babylon-6.18.0/rollup.config.js 0000664 0000000 0000000 00000000332 13144646270 0016360 0 ustar 00root root 0000000 0000000 import babel from "rollup-plugin-babel";
import nodeResolve from "rollup-plugin-node-resolve";
export default {
entry: "src/index.js",
dest: "lib/index.js",
plugins: [babel(), nodeResolve()],
format: "cjs"
};
babylon-6.18.0/scripts/ 0000775 0000000 0000000 00000000000 13144646270 0014732 5 ustar 00root root 0000000 0000000 babylon-6.18.0/scripts/run_flow_tests.js 0000664 0000000 0000000 00000005721 13144646270 0020352 0 ustar 00root root 0000000 0000000 "use strict";
const path = require("path");
const chalk = require("chalk");
const parse = require("..").parse;
const flowDirectory = path.join(__dirname, "../build/flow");
const hardcodedTestFile = path.join(flowDirectory, "src/parser/test/hardcoded_tests.js");
const hardcodedTests = require(hardcodedTestFile).sections;
const options = {
plugins: [
"jsx",
"flow",
"asyncGenerators",
"objectRestSpread"
],
sourceType: "module",
};
const flowOptionsMapping = {
"esproposal_class_instance_fields": "classProperties",
"esproposal_class_static_fields": "classProperties",
"esproposal_export_star_as": "exportExtensions",
"esproposal_decorators": "decorators",
};
let failedTests = 0;
let successTests = 0;
Object.keys(hardcodedTests).forEach((sectionName) => {
console.log("");
console.log(`### ${sectionName} ###`);
Object.keys(hardcodedTests[sectionName]).forEach((code) => {
const shouldSuccess = !Object.keys(hardcodedTests[sectionName][code])
.some(
(key) => {
const value = hardcodedTests[sectionName][code][key];
if (key === "errors.length" && value === 0) return false;
if (key === "errors" && Array.isArray(value) && value.length === 0) return false;
if (!key.startsWith("errors")) return false;
return true;
}
);
const parserOptions = hardcodedTests[sectionName][code]["%parse_options%"];
const babylonOptions = Object.assign({}, options );
babylonOptions.plugins = babylonOptions.plugins.slice();
if (parserOptions) {
Object.keys(parserOptions).forEach((option) => {
if (!parserOptions[option]) return;
if (!flowOptionsMapping[option]) throw new Error("Parser options not mapped " + option);
babylonOptions.plugins.push(flowOptionsMapping[option]);
});
}
let failed = false;
let exception = null;
try {
parse(code, babylonOptions);
} catch (e) {
exception = e;
failed = true;
}
if (!failed && shouldSuccess || failed && !shouldSuccess) {
successTests++;
console.log(chalk.green(`✔ ${code}`));
} else {
failedTests++;
printErrorMessage(code, exception, shouldSuccess, hardcodedTests[sectionName][code], babylonOptions)
}
});
});
function printErrorMessage(code, exception, shouldSuccess, data, babylonOptions) {
console.log(chalk.red(`✘ ${code}`));
console.log(chalk.yellow(` Should ${shouldSuccess ? "parse successfully" : `fail parsing`}, but did not`));
if (exception) console.log(chalk.yellow(` Failed with: \`${exception.message}\``));
if (data["errors.0.message"]) console.log(chalk.yellow(` Expected error message similar to: \`${data["errors.0.message"]}\``));
console.log(chalk.yellow(` Active plugins: ${JSON.stringify(babylonOptions.plugins)}`));
}
console.log();
console.log(chalk.green(`✔ ${successTests} tests passed`));
console.log(chalk.red(`✔ ${failedTests} tests failed`));
process.exit(failedTests > 0 ? 1 : 0);
babylon-6.18.0/src/ 0000775 0000000 0000000 00000000000 13144646270 0014032 5 ustar 00root root 0000000 0000000 babylon-6.18.0/src/index.js 0000775 0000000 0000000 00000001535 13144646270 0015506 0 ustar 00root root 0000000 0000000 import Parser, { plugins } from "./parser";
import "./parser/util";
import "./parser/statement";
import "./parser/lval";
import "./parser/expression";
import "./parser/node";
import "./parser/location";
import "./parser/comments";
import { types as tokTypes } from "./tokenizer/types";
import "./tokenizer";
import "./tokenizer/context";
import estreePlugin from "./plugins/estree";
import flowPlugin from "./plugins/flow";
import jsxPlugin from "./plugins/jsx";
plugins.estree = estreePlugin;
plugins.flow = flowPlugin;
plugins.jsx = jsxPlugin;
export function parse(input, options) {
return new Parser(options, input).parse();
}
export function parseExpression(input, options) {
const parser = new Parser(options, input);
if (parser.options.strictMode) {
parser.state.strict = true;
}
return parser.getExpression();
}
export { tokTypes };
babylon-6.18.0/src/options.js 0000775 0000000 0000000 00000002370 13144646270 0016070 0 ustar 00root root 0000000 0000000 // A second optional argument can be given to further configure
// the parser process. These options are recognized:
export const defaultOptions: {
sourceType: string,
sourceFilename: any,
startLine: number,
allowReturnOutsideFunction: boolean,
allowImportExportEverywhere: boolean,
allowSuperOutsideMethod: boolean,
plugins: Array,
strictMode: any
} = {
// Source type ("script" or "module") for different semantics
sourceType: "script",
// Source filename.
sourceFilename: undefined,
// Line from which to start counting source. Useful for
// integration with other tools.
startLine: 1,
// When enabled, a return at the top level is not considered an
// error.
allowReturnOutsideFunction: false,
// When enabled, import/export statements are not constrained to
// appearing at the top of the program.
allowImportExportEverywhere: false,
// TODO
allowSuperOutsideMethod: false,
// An array of plugins to enable
plugins: [],
// TODO
strictMode: null,
};
// Interpret and default an options object
export function getOptions(opts?: Object): Object {
const options = {};
for (const key in defaultOptions) {
options[key] = opts && key in opts ? opts[key] : defaultOptions[key];
}
return options;
}
babylon-6.18.0/src/parser/ 0000775 0000000 0000000 00000000000 13144646270 0015326 5 ustar 00root root 0000000 0000000 babylon-6.18.0/src/parser/comments.js 0000664 0000000 0000000 00000017024 13144646270 0017515 0 ustar 00root root 0000000 0000000 /* eslint max-len: 0 */
/**
* Based on the comment attachment algorithm used in espree and estraverse.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
import Parser from "./index";
function last(stack) {
return stack[stack.length - 1];
}
const pp = Parser.prototype;
pp.addComment = function (comment) {
if (this.filename) comment.loc.filename = this.filename;
this.state.trailingComments.push(comment);
this.state.leadingComments.push(comment);
};
pp.processComment = function (node) {
if (node.type === "Program" && node.body.length > 0) return;
const stack = this.state.commentStack;
let firstChild, lastChild, trailingComments, i, j;
if (this.state.trailingComments.length > 0) {
// If the first comment in trailingComments comes after the
// current node, then we're good - all comments in the array will
// come after the node and so it's safe to add them as official
// trailingComments.
if (this.state.trailingComments[0].start >= node.end) {
trailingComments = this.state.trailingComments;
this.state.trailingComments = [];
} else {
// Otherwise, if the first comment doesn't come after the
// current node, that means we have a mix of leading and trailing
// comments in the array and that leadingComments contains the
// same items as trailingComments. Reset trailingComments to
// zero items and we'll handle this by evaluating leadingComments
// later.
this.state.trailingComments.length = 0;
}
} else {
const lastInStack = last(stack);
if (stack.length > 0 && lastInStack.trailingComments && lastInStack.trailingComments[0].start >= node.end) {
trailingComments = lastInStack.trailingComments;
lastInStack.trailingComments = null;
}
}
// Eating the stack.
if (stack.length > 0 && last(stack).start >= node.start) {
firstChild = stack.pop();
}
while (stack.length > 0 && last(stack).start >= node.start) {
lastChild = stack.pop();
}
if (!lastChild && firstChild) lastChild = firstChild;
// Attach comments that follow a trailing comma on the last
// property in an object literal or a trailing comma in function arguments
// as trailing comments
if (firstChild && this.state.leadingComments.length > 0) {
const lastComment = last(this.state.leadingComments);
if (firstChild.type === "ObjectProperty") {
if (lastComment.start >= node.start) {
if (this.state.commentPreviousNode) {
for (j = 0; j < this.state.leadingComments.length; j++) {
if (this.state.leadingComments[j].end < this.state.commentPreviousNode.end) {
this.state.leadingComments.splice(j, 1);
j--;
}
}
if (this.state.leadingComments.length > 0) {
firstChild.trailingComments = this.state.leadingComments;
this.state.leadingComments = [];
}
}
}
} else if (node.type === "CallExpression" && node.arguments && node.arguments.length) {
const lastArg = last(node.arguments);
if (lastArg && lastComment.start >= lastArg.start && lastComment.end <= node.end) {
if (this.state.commentPreviousNode) {
if (this.state.leadingComments.length > 0) {
lastArg.trailingComments = this.state.leadingComments;
this.state.leadingComments = [];
}
}
}
}
}
if (lastChild) {
if (lastChild.leadingComments) {
if (lastChild !== node && last(lastChild.leadingComments).end <= node.start) {
node.leadingComments = lastChild.leadingComments;
lastChild.leadingComments = null;
} else {
// A leading comment for an anonymous class had been stolen by its first ClassMethod,
// so this takes back the leading comment.
// See also: https://github.com/eslint/espree/issues/158
for (i = lastChild.leadingComments.length - 2; i >= 0; --i) {
if (lastChild.leadingComments[i].end <= node.start) {
node.leadingComments = lastChild.leadingComments.splice(0, i + 1);
break;
}
}
}
}
} else if (this.state.leadingComments.length > 0) {
if (last(this.state.leadingComments).end <= node.start) {
if (this.state.commentPreviousNode) {
for (j = 0; j < this.state.leadingComments.length; j++) {
if (this.state.leadingComments[j].end < this.state.commentPreviousNode.end) {
this.state.leadingComments.splice(j, 1);
j--;
}
}
}
if (this.state.leadingComments.length > 0) {
node.leadingComments = this.state.leadingComments;
this.state.leadingComments = [];
}
} else {
// https://github.com/eslint/espree/issues/2
//
// In special cases, such as return (without a value) and
// debugger, all comments will end up as leadingComments and
// will otherwise be eliminated. This step runs when the
// commentStack is empty and there are comments left
// in leadingComments.
//
// This loop figures out the stopping point between the actual
// leading and trailing comments by finding the location of the
// first comment that comes after the given node.
for (i = 0; i < this.state.leadingComments.length; i++) {
if (this.state.leadingComments[i].end > node.start) {
break;
}
}
// Split the array based on the location of the first comment
// that comes after the node. Keep in mind that this could
// result in an empty array, and if so, the array must be
// deleted.
node.leadingComments = this.state.leadingComments.slice(0, i);
if ((node.leadingComments: Array).length === 0) {
node.leadingComments = null;
}
// Similarly, trailing comments are attached later. The variable
// must be reset to null if there are no trailing comments.
trailingComments = this.state.leadingComments.slice(i);
if (trailingComments.length === 0) {
trailingComments = null;
}
}
}
this.state.commentPreviousNode = node;
if (trailingComments) {
if (trailingComments.length && trailingComments[0].start >= node.start && last(trailingComments).end <= node.end) {
node.innerComments = trailingComments;
} else {
node.trailingComments = trailingComments;
}
}
stack.push(node);
};
babylon-6.18.0/src/parser/expression.js 0000664 0000000 0000000 00000110154 13144646270 0020065 0 ustar 00root root 0000000 0000000 /* eslint max-len: 0 */
// A recursive descent parser operates by defining functions for all
// syntactic elements, and recursively calling those, each function
// advancing the input stream and returning an AST node. Precedence
// of constructs (for example, the fact that `!x[1]` means `!(x[1])`
// instead of `(!x)[1]` is handled by the fact that the parser
// function that parses unary prefix operators is called first, and
// in turn calls the function that parses `[]` subscripts — that
// way, it'll receive the node for `x[1]` already parsed, and wraps
// *that* in the unary operator node.
//
// Acorn uses an [operator precedence parser][opp] to handle binary
// operator precedence, because it is much more compact than using
// the technique outlined above, which uses different, nesting
// functions to specify precedence, for all of the ten binary
// precedence levels that JavaScript defines.
//
// [opp]: http://en.wikipedia.org/wiki/Operator-precedence_parser
import { types as tt } from "../tokenizer/types";
import Parser from "./index";
import { reservedWords } from "../util/identifier";
const pp = Parser.prototype;
// Check if property name clashes with already added.
// Object/class getters and setters are not allowed to clash —
// either with each other or with an init property — and in
// strict mode, init properties are also not allowed to be repeated.
pp.checkPropClash = function (prop, propHash) {
if (prop.computed || prop.kind) return;
const key = prop.key;
// It is either an Identifier or a String/NumericLiteral
const name = key.type === "Identifier" ? key.name : String(key.value);
if (name === "__proto__") {
if (propHash.proto) this.raise(key.start, "Redefinition of __proto__ property");
propHash.proto = true;
}
};
// Convenience method to parse an Expression only
pp.getExpression = function() {
this.nextToken();
const expr = this.parseExpression();
if (!this.match(tt.eof)) {
this.unexpected();
}
return expr;
};
// ### Expression parsing
// These nest, from the most general expression type at the top to
// 'atomic', nondivisible expression types at the bottom. Most of
// the functions will simply let the function (s) below them parse,
// and, *if* the syntactic construct they handle is present, wrap
// the AST node that the inner parser gave them in another node.
// Parse a full expression. The optional arguments are used to
// forbid the `in` operator (in for loops initialization expressions)
// and provide reference for storing '=' operator inside shorthand
// property assignment in contexts where both object expression
// and object pattern might appear (so it's possible to raise
// delayed syntax error at correct position).
pp.parseExpression = function (noIn, refShorthandDefaultPos) {
const startPos = this.state.start;
const startLoc = this.state.startLoc;
const expr = this.parseMaybeAssign(noIn, refShorthandDefaultPos);
if (this.match(tt.comma)) {
const node = this.startNodeAt(startPos, startLoc);
node.expressions = [expr];
while (this.eat(tt.comma)) {
node.expressions.push(this.parseMaybeAssign(noIn, refShorthandDefaultPos));
}
this.toReferencedList(node.expressions);
return this.finishNode(node, "SequenceExpression");
}
return expr;
};
// Parse an assignment expression. This includes applications of
// operators like `+=`.
pp.parseMaybeAssign = function (noIn, refShorthandDefaultPos, afterLeftParse, refNeedsArrowPos) {
const startPos = this.state.start;
const startLoc = this.state.startLoc;
if (this.match(tt._yield) && this.state.inGenerator) {
let left = this.parseYield();
if (afterLeftParse) left = afterLeftParse.call(this, left, startPos, startLoc);
return left;
}
let failOnShorthandAssign;
if (refShorthandDefaultPos) {
failOnShorthandAssign = false;
} else {
refShorthandDefaultPos = { start: 0 };
failOnShorthandAssign = true;
}
if (this.match(tt.parenL) || this.match(tt.name)) {
this.state.potentialArrowAt = this.state.start;
}
let left = this.parseMaybeConditional(noIn, refShorthandDefaultPos, refNeedsArrowPos);
if (afterLeftParse) left = afterLeftParse.call(this, left, startPos, startLoc);
if (this.state.type.isAssign) {
const node = this.startNodeAt(startPos, startLoc);
node.operator = this.state.value;
node.left = this.match(tt.eq) ? this.toAssignable(left, undefined, "assignment expression") : left;
refShorthandDefaultPos.start = 0; // reset because shorthand default was used correctly
this.checkLVal(left, undefined, undefined, "assignment expression");
if (left.extra && left.extra.parenthesized) {
let errorMsg;
if (left.type === "ObjectPattern") {
errorMsg = "`({a}) = 0` use `({a} = 0)`";
} else if (left.type === "ArrayPattern") {
errorMsg = "`([a]) = 0` use `([a] = 0)`";
}
if (errorMsg) {
this.raise(left.start, `You're trying to assign to a parenthesized expression, eg. instead of ${errorMsg}`);
}
}
this.next();
node.right = this.parseMaybeAssign(noIn);
return this.finishNode(node, "AssignmentExpression");
} else if (failOnShorthandAssign && refShorthandDefaultPos.start) {
this.unexpected(refShorthandDefaultPos.start);
}
return left;
};
// Parse a ternary conditional (`?:`) operator.
pp.parseMaybeConditional = function (noIn, refShorthandDefaultPos, refNeedsArrowPos) {
const startPos = this.state.start;
const startLoc = this.state.startLoc;
const expr = this.parseExprOps(noIn, refShorthandDefaultPos);
if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr;
return this.parseConditional(expr, noIn, startPos, startLoc, refNeedsArrowPos);
};
pp.parseConditional = function (expr, noIn, startPos, startLoc) {
if (this.eat(tt.question)) {
const node = this.startNodeAt(startPos, startLoc);
node.test = expr;
node.consequent = this.parseMaybeAssign();
this.expect(tt.colon);
node.alternate = this.parseMaybeAssign(noIn);
return this.finishNode(node, "ConditionalExpression");
}
return expr;
};
// Start the precedence parser.
pp.parseExprOps = function (noIn, refShorthandDefaultPos) {
const startPos = this.state.start;
const startLoc = this.state.startLoc;
const expr = this.parseMaybeUnary(refShorthandDefaultPos);
if (refShorthandDefaultPos && refShorthandDefaultPos.start) {
return expr;
} else {
return this.parseExprOp(expr, startPos, startLoc, -1, noIn);
}
};
// Parse binary operators with the operator precedence parsing
// algorithm. `left` is the left-hand side of the operator.
// `minPrec` provides context that allows the function to stop and
// defer further parser to one of its callers when it encounters an
// operator that has a lower precedence than the set it is parsing.
pp.parseExprOp = function(left, leftStartPos, leftStartLoc, minPrec, noIn) {
const prec = this.state.type.binop;
if (prec != null && (!noIn || !this.match(tt._in))) {
if (prec > minPrec) {
const node = this.startNodeAt(leftStartPos, leftStartLoc);
node.left = left;
node.operator = this.state.value;
if (
node.operator === "**" &&
left.type === "UnaryExpression" &&
left.extra &&
!left.extra.parenthesizedArgument &&
!left.extra.parenthesized
) {
this.raise(left.argument.start, "Illegal expression. Wrap left hand side or entire exponentiation in parentheses.");
}
const op = this.state.type;
this.next();
const startPos = this.state.start;
const startLoc = this.state.startLoc;
node.right = this.parseExprOp(this.parseMaybeUnary(), startPos, startLoc, op.rightAssociative ? prec - 1 : prec, noIn);
this.finishNode(node, (op === tt.logicalOR || op === tt.logicalAND) ? "LogicalExpression" : "BinaryExpression");
return this.parseExprOp(node, leftStartPos, leftStartLoc, minPrec, noIn);
}
}
return left;
};
// Parse unary operators, both prefix and postfix.
pp.parseMaybeUnary = function (refShorthandDefaultPos) {
if (this.state.type.prefix) {
const node = this.startNode();
const update = this.match(tt.incDec);
node.operator = this.state.value;
node.prefix = true;
this.next();
const argType = this.state.type;
node.argument = this.parseMaybeUnary();
this.addExtra(node, "parenthesizedArgument", argType === tt.parenL && (!node.argument.extra || !node.argument.extra.parenthesized));
if (refShorthandDefaultPos && refShorthandDefaultPos.start) {
this.unexpected(refShorthandDefaultPos.start);
}
if (update) {
this.checkLVal(node.argument, undefined, undefined, "prefix operation");
} else if (this.state.strict && node.operator === "delete" && node.argument.type === "Identifier") {
this.raise(node.start, "Deleting local variable in strict mode");
}
return this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression");
}
const startPos = this.state.start;
const startLoc = this.state.startLoc;
let expr = this.parseExprSubscripts(refShorthandDefaultPos);
if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr;
while (this.state.type.postfix && !this.canInsertSemicolon()) {
const node = this.startNodeAt(startPos, startLoc);
node.operator = this.state.value;
node.prefix = false;
node.argument = expr;
this.checkLVal(expr, undefined, undefined, "postfix operation");
this.next();
expr = this.finishNode(node, "UpdateExpression");
}
return expr;
};
// Parse call, dot, and `[]`-subscript expressions.
pp.parseExprSubscripts = function (refShorthandDefaultPos) {
const startPos = this.state.start;
const startLoc = this.state.startLoc;
const potentialArrowAt = this.state.potentialArrowAt;
const expr = this.parseExprAtom(refShorthandDefaultPos);
if (expr.type === "ArrowFunctionExpression" && expr.start === potentialArrowAt) {
return expr;
}
if (refShorthandDefaultPos && refShorthandDefaultPos.start) {
return expr;
}
return this.parseSubscripts(expr, startPos, startLoc);
};
pp.parseSubscripts = function (base, startPos, startLoc, noCalls) {
for (;;) {
if (!noCalls && this.eat(tt.doubleColon)) {
const node = this.startNodeAt(startPos, startLoc);
node.object = base;
node.callee = this.parseNoCallExpr();
return this.parseSubscripts(this.finishNode(node, "BindExpression"), startPos, startLoc, noCalls);
} else if (this.eat(tt.dot)) {
const node = this.startNodeAt(startPos, startLoc);
node.object = base;
node.property = this.parseIdentifier(true);
node.computed = false;
base = this.finishNode(node, "MemberExpression");
} else if (this.eat(tt.bracketL)) {
const node = this.startNodeAt(startPos, startLoc);
node.object = base;
node.property = this.parseExpression();
node.computed = true;
this.expect(tt.bracketR);
base = this.finishNode(node, "MemberExpression");
} else if (!noCalls && this.match(tt.parenL)) {
const possibleAsync = this.state.potentialArrowAt === base.start && base.type === "Identifier" && base.name === "async" && !this.canInsertSemicolon();
this.next();
const node = this.startNodeAt(startPos, startLoc);
node.callee = base;
node.arguments = this.parseCallExpressionArguments(tt.parenR, possibleAsync);
if (node.callee.type === "Import" && node.arguments.length !== 1) {
this.raise(node.start, "import() requires exactly one argument");
}
base = this.finishNode(node, "CallExpression");
if (possibleAsync && this.shouldParseAsyncArrow()) {
return this.parseAsyncArrowFromCallExpression(this.startNodeAt(startPos, startLoc), node);
} else {
this.toReferencedList(node.arguments);
}
} else if (this.match(tt.backQuote)) {
const node = this.startNodeAt(startPos, startLoc);
node.tag = base;
node.quasi = this.parseTemplate(true);
base = this.finishNode(node, "TaggedTemplateExpression");
} else {
return base;
}
}
};
pp.parseCallExpressionArguments = function (close, possibleAsyncArrow) {
const elts = [];
let innerParenStart;
let first = true;
while (!this.eat(close)) {
if (first) {
first = false;
} else {
this.expect(tt.comma);
if (this.eat(close)) break;
}
// we need to make sure that if this is an async arrow functions, that we don't allow inner parens inside the params
if (this.match(tt.parenL) && !innerParenStart) {
innerParenStart = this.state.start;
}
elts.push(this.parseExprListItem(false, possibleAsyncArrow ? { start: 0 } : undefined, possibleAsyncArrow ? { start: 0 } : undefined));
}
// we found an async arrow function so let's not allow any inner parens
if (possibleAsyncArrow && innerParenStart && this.shouldParseAsyncArrow()) {
this.unexpected();
}
return elts;
};
pp.shouldParseAsyncArrow = function () {
return this.match(tt.arrow);
};
pp.parseAsyncArrowFromCallExpression = function (node, call) {
this.expect(tt.arrow);
return this.parseArrowExpression(node, call.arguments, true);
};
// Parse a no-call expression (like argument of `new` or `::` operators).
pp.parseNoCallExpr = function () {
const startPos = this.state.start;
const startLoc = this.state.startLoc;
return this.parseSubscripts(this.parseExprAtom(), startPos, startLoc, true);
};
// Parse an atomic expression — either a single token that is an
// expression, an expression started by a keyword like `function` or
// `new`, or an expression wrapped in punctuation like `()`, `[]`,
// or `{}`.
pp.parseExprAtom = function (refShorthandDefaultPos) {
const canBeArrow = this.state.potentialArrowAt === this.state.start;
let node;
switch (this.state.type) {
case tt._super:
if (
!this.state.inMethod &&
!this.state.inClassProperty &&
!this.options.allowSuperOutsideMethod
) {
this.raise(this.state.start, "'super' outside of function or class");
}
node = this.startNode();
this.next();
if (!this.match(tt.parenL) && !this.match(tt.bracketL) && !this.match(tt.dot)) {
this.unexpected();
}
if (this.match(tt.parenL) && this.state.inMethod !== "constructor" && !this.options.allowSuperOutsideMethod) {
this.raise(node.start, "super() outside of class constructor");
}
return this.finishNode(node, "Super");
case tt._import:
if (!this.hasPlugin("dynamicImport")) this.unexpected();
node = this.startNode();
this.next();
if (!this.match(tt.parenL)) {
this.unexpected(null, tt.parenL);
}
return this.finishNode(node, "Import");
case tt._this:
node = this.startNode();
this.next();
return this.finishNode(node, "ThisExpression");
case tt._yield:
if (this.state.inGenerator) this.unexpected();
case tt.name:
node = this.startNode();
const allowAwait = this.state.value === "await" && this.state.inAsync;
const allowYield = this.shouldAllowYieldIdentifier();
const id = this.parseIdentifier(allowAwait || allowYield);
if (id.name === "await") {
if (this.state.inAsync || this.inModule) {
return this.parseAwait(node);
}
} else if (id.name === "async" && this.match(tt._function) && !this.canInsertSemicolon()) {
this.next();
return this.parseFunction(node, false, false, true);
} else if (canBeArrow && id.name === "async" && this.match(tt.name)) {
const params = [this.parseIdentifier()];
this.expect(tt.arrow);
// let foo = bar => {};
return this.parseArrowExpression(node, params, true);
}
if (canBeArrow && !this.canInsertSemicolon() && this.eat(tt.arrow)) {
return this.parseArrowExpression(node, [id]);
}
return id;
case tt._do:
if (this.hasPlugin("doExpressions")) {
const node = this.startNode();
this.next();
const oldInFunction = this.state.inFunction;
const oldLabels = this.state.labels;
this.state.labels = [];
this.state.inFunction = false;
node.body = this.parseBlock(false, true);
this.state.inFunction = oldInFunction;
this.state.labels = oldLabels;
return this.finishNode(node, "DoExpression");
}
case tt.regexp:
const value = this.state.value;
node = this.parseLiteral(value.value, "RegExpLiteral");
node.pattern = value.pattern;
node.flags = value.flags;
return node;
case tt.num:
return this.parseLiteral(this.state.value, "NumericLiteral");
case tt.string:
return this.parseLiteral(this.state.value, "StringLiteral");
case tt._null:
node = this.startNode();
this.next();
return this.finishNode(node, "NullLiteral");
case tt._true: case tt._false:
node = this.startNode();
node.value = this.match(tt._true);
this.next();
return this.finishNode(node, "BooleanLiteral");
case tt.parenL:
return this.parseParenAndDistinguishExpression(null, null, canBeArrow);
case tt.bracketL:
node = this.startNode();
this.next();
node.elements = this.parseExprList(tt.bracketR, true, refShorthandDefaultPos);
this.toReferencedList(node.elements);
return this.finishNode(node, "ArrayExpression");
case tt.braceL:
return this.parseObj(false, refShorthandDefaultPos);
case tt._function:
return this.parseFunctionExpression();
case tt.at:
this.parseDecorators();
case tt._class:
node = this.startNode();
this.takeDecorators(node);
return this.parseClass(node, false);
case tt._new:
return this.parseNew();
case tt.backQuote:
return this.parseTemplate(false);
case tt.doubleColon:
node = this.startNode();
this.next();
node.object = null;
const callee = node.callee = this.parseNoCallExpr();
if (callee.type === "MemberExpression") {
return this.finishNode(node, "BindExpression");
} else {
this.raise(callee.start, "Binding should be performed on object property.");
}
default:
this.unexpected();
}
};
pp.parseFunctionExpression = function () {
const node = this.startNode();
const meta = this.parseIdentifier(true);
if (this.state.inGenerator && this.eat(tt.dot) && this.hasPlugin("functionSent")) {
return this.parseMetaProperty(node, meta, "sent");
} else {
return this.parseFunction(node, false);
}
};
pp.parseMetaProperty = function (node, meta, propertyName) {
node.meta = meta;
node.property = this.parseIdentifier(true);
if (node.property.name !== propertyName) {
this.raise(node.property.start, `The only valid meta property for new is ${meta.name}.${propertyName}`);
}
return this.finishNode(node, "MetaProperty");
};
pp.parseLiteral = function (value, type, startPos, startLoc) {
startPos = startPos || this.state.start;
startLoc = startLoc || this.state.startLoc;
const node = this.startNodeAt(startPos, startLoc);
this.addExtra(node, "rawValue", value);
this.addExtra(node, "raw", this.input.slice(startPos, this.state.end));
node.value = value;
this.next();
return this.finishNode(node, type);
};
pp.parseParenExpression = function () {
this.expect(tt.parenL);
const val = this.parseExpression();
this.expect(tt.parenR);
return val;
};
pp.parseParenAndDistinguishExpression = function (startPos, startLoc, canBeArrow) {
startPos = startPos || this.state.start;
startLoc = startLoc || this.state.startLoc;
let val;
this.expect(tt.parenL);
const innerStartPos = this.state.start;
const innerStartLoc = this.state.startLoc;
const exprList = [];
const refShorthandDefaultPos = { start: 0 };
const refNeedsArrowPos = { start: 0 };
let first = true;
let spreadStart;
let optionalCommaStart;
while (!this.match(tt.parenR)) {
if (first) {
first = false;
} else {
this.expect(tt.comma, refNeedsArrowPos.start || null);
if (this.match(tt.parenR)) {
optionalCommaStart = this.state.start;
break;
}
}
if (this.match(tt.ellipsis)) {
const spreadNodeStartPos = this.state.start;
const spreadNodeStartLoc = this.state.startLoc;
spreadStart = this.state.start;
exprList.push(this.parseParenItem(this.parseRest(), spreadNodeStartPos, spreadNodeStartLoc));
break;
} else {
exprList.push(this.parseMaybeAssign(false, refShorthandDefaultPos, this.parseParenItem, refNeedsArrowPos));
}
}
const innerEndPos = this.state.start;
const innerEndLoc = this.state.startLoc;
this.expect(tt.parenR);
let arrowNode = this.startNodeAt(startPos, startLoc);
if (canBeArrow && this.shouldParseArrow() && (arrowNode = this.parseArrow(arrowNode))) {
for (const param of exprList) {
if (param.extra && param.extra.parenthesized) this.unexpected(param.extra.parenStart);
}
return this.parseArrowExpression(arrowNode, exprList);
}
if (!exprList.length) {
this.unexpected(this.state.lastTokStart);
}
if (optionalCommaStart) this.unexpected(optionalCommaStart);
if (spreadStart) this.unexpected(spreadStart);
if (refShorthandDefaultPos.start) this.unexpected(refShorthandDefaultPos.start);
if (refNeedsArrowPos.start) this.unexpected(refNeedsArrowPos.start);
if (exprList.length > 1) {
val = this.startNodeAt(innerStartPos, innerStartLoc);
val.expressions = exprList;
this.toReferencedList(val.expressions);
this.finishNodeAt(val, "SequenceExpression", innerEndPos, innerEndLoc);
} else {
val = exprList[0];
}
this.addExtra(val, "parenthesized", true);
this.addExtra(val, "parenStart", startPos);
return val;
};
pp.shouldParseArrow = function () {
return !this.canInsertSemicolon();
};
pp.parseArrow = function (node) {
if (this.eat(tt.arrow)) {
return node;
}
};
pp.parseParenItem = function (node) {
return node;
};
// New's precedence is slightly tricky. It must allow its argument
// to be a `[]` or dot subscript expression, but not a call — at
// least, not without wrapping it in parentheses. Thus, it uses the
pp.parseNew = function () {
const node = this.startNode();
const meta = this.parseIdentifier(true);
if (this.eat(tt.dot)) {
const metaProp = this.parseMetaProperty(node, meta, "target");
if (!this.state.inFunction) {
this.raise(metaProp.property.start, "new.target can only be used in functions");
}
return metaProp;
}
node.callee = this.parseNoCallExpr();
if (this.eat(tt.parenL)) {
node.arguments = this.parseExprList(tt.parenR);
this.toReferencedList(node.arguments);
} else {
node.arguments = [];
}
return this.finishNode(node, "NewExpression");
};
// Parse template expression.
pp.parseTemplateElement = function (isTagged) {
const elem = this.startNode();
if (this.state.value === null) {
if (!isTagged || !this.hasPlugin("templateInvalidEscapes")) {
this.raise(this.state.invalidTemplateEscapePosition, "Invalid escape sequence in template");
} else {
this.state.invalidTemplateEscapePosition = null;
}
}
elem.value = {
raw: this.input.slice(this.state.start, this.state.end).replace(/\r\n?/g, "\n"),
cooked: this.state.value
};
this.next();
elem.tail = this.match(tt.backQuote);
return this.finishNode(elem, "TemplateElement");
};
pp.parseTemplate = function (isTagged) {
const node = this.startNode();
this.next();
node.expressions = [];
let curElt = this.parseTemplateElement(isTagged);
node.quasis = [curElt];
while (!curElt.tail) {
this.expect(tt.dollarBraceL);
node.expressions.push(this.parseExpression());
this.expect(tt.braceR);
node.quasis.push(curElt = this.parseTemplateElement(isTagged));
}
this.next();
return this.finishNode(node, "TemplateLiteral");
};
// Parse an object literal or binding pattern.
pp.parseObj = function (isPattern, refShorthandDefaultPos) {
let decorators = [];
const propHash = Object.create(null);
let first = true;
const node = this.startNode();
node.properties = [];
this.next();
let firstRestLocation = null;
while (!this.eat(tt.braceR)) {
if (first) {
first = false;
} else {
this.expect(tt.comma);
if (this.eat(tt.braceR)) break;
}
while (this.match(tt.at)) {
decorators.push(this.parseDecorator());
}
let prop = this.startNode(), isGenerator = false, isAsync = false, startPos, startLoc;
if (decorators.length) {
prop.decorators = decorators;
decorators = [];
}
if (this.hasPlugin("objectRestSpread") && this.match(tt.ellipsis)) {
prop = this.parseSpread(isPattern ? { start: 0 } : undefined);
prop.type = isPattern ? "RestProperty" : "SpreadProperty";
if (isPattern) this.toAssignable(prop.argument, true, "object pattern");
node.properties.push(prop);
if (isPattern) {
const position = this.state.start;
if (firstRestLocation !== null) {
this.unexpected(firstRestLocation, "Cannot have multiple rest elements when destructuring");
} else if (this.eat(tt.braceR)) {
break;
} else if (this.match(tt.comma) && this.lookahead().type === tt.braceR) {
// TODO: temporary rollback
// this.unexpected(position, "A trailing comma is not permitted after the rest element");
continue;
} else {
firstRestLocation = position;
continue;
}
} else {
continue;
}
}
prop.method = false;
prop.shorthand = false;
if (isPattern || refShorthandDefaultPos) {
startPos = this.state.start;
startLoc = this.state.startLoc;
}
if (!isPattern) {
isGenerator = this.eat(tt.star);
}
if (!isPattern && this.isContextual("async")) {
if (isGenerator) this.unexpected();
const asyncId = this.parseIdentifier();
if (this.match(tt.colon) || this.match(tt.parenL) || this.match(tt.braceR) || this.match(tt.eq) || this.match(tt.comma)) {
prop.key = asyncId;
prop.computed = false;
} else {
isAsync = true;
if (this.hasPlugin("asyncGenerators")) isGenerator = this.eat(tt.star);
this.parsePropertyName(prop);
}
} else {
this.parsePropertyName(prop);
}
this.parseObjPropValue(prop, startPos, startLoc, isGenerator, isAsync, isPattern, refShorthandDefaultPos);
this.checkPropClash(prop, propHash);
if (prop.shorthand) {
this.addExtra(prop, "shorthand", true);
}
node.properties.push(prop);
}
if (firstRestLocation !== null) {
this.unexpected(firstRestLocation, "The rest element has to be the last element when destructuring");
}
if (decorators.length) {
this.raise(this.state.start, "You have trailing decorators with no property");
}
return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression");
};
pp.isGetterOrSetterMethod = function (prop, isPattern) {
return !isPattern &&
!prop.computed &&
prop.key.type === "Identifier" &&
(prop.key.name === "get" || prop.key.name === "set") &&
(
this.match(tt.string) || // get "string"() {}
this.match(tt.num) || // get 1() {}
this.match(tt.bracketL) || // get ["string"]() {}
this.match(tt.name) || // get foo() {}
this.state.type.keyword // get debugger() {}
);
};
// get methods aren't allowed to have any parameters
// set methods must have exactly 1 parameter
pp.checkGetterSetterParamCount = function (method) {
const paramCount = method.kind === "get" ? 0 : 1;
if (method.params.length !== paramCount) {
const start = method.start;
if (method.kind === "get") {
this.raise(start, "getter should have no params");
} else {
this.raise(start, "setter should have exactly one param");
}
}
};
pp.parseObjectMethod = function (prop, isGenerator, isAsync, isPattern) {
if (isAsync || isGenerator || this.match(tt.parenL)) {
if (isPattern) this.unexpected();
prop.kind = "method";
prop.method = true;
this.parseMethod(prop, isGenerator, isAsync);
return this.finishNode(prop, "ObjectMethod");
}
if (this.isGetterOrSetterMethod(prop, isPattern)) {
if (isGenerator || isAsync) this.unexpected();
prop.kind = prop.key.name;
this.parsePropertyName(prop);
this.parseMethod(prop);
this.checkGetterSetterParamCount(prop);
return this.finishNode(prop, "ObjectMethod");
}
};
pp.parseObjectProperty = function (prop, startPos, startLoc, isPattern, refShorthandDefaultPos) {
if (this.eat(tt.colon)) {
prop.value = isPattern ? this.parseMaybeDefault(this.state.start, this.state.startLoc) : this.parseMaybeAssign(false, refShorthandDefaultPos);
return this.finishNode(prop, "ObjectProperty");
}
if (!prop.computed && prop.key.type === "Identifier") {
this.checkReservedWord(prop.key.name, prop.key.start, true, true);
if (isPattern) {
prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key.__clone());
} else if (this.match(tt.eq) && refShorthandDefaultPos) {
if (!refShorthandDefaultPos.start) {
refShorthandDefaultPos.start = this.state.start;
}
prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key.__clone());
} else {
prop.value = prop.key.__clone();
}
prop.shorthand = true;
return this.finishNode(prop, "ObjectProperty");
}
};
pp.parseObjPropValue = function (prop, startPos, startLoc, isGenerator, isAsync, isPattern, refShorthandDefaultPos) {
const node =
this.parseObjectMethod(prop, isGenerator, isAsync, isPattern) ||
this.parseObjectProperty(prop, startPos, startLoc, isPattern, refShorthandDefaultPos);
if (!node) this.unexpected();
return node;
};
pp.parsePropertyName = function (prop) {
if (this.eat(tt.bracketL)) {
prop.computed = true;
prop.key = this.parseMaybeAssign();
this.expect(tt.bracketR);
} else {
prop.computed = false;
const oldInPropertyName = this.state.inPropertyName;
this.state.inPropertyName = true;
prop.key = (this.match(tt.num) || this.match(tt.string)) ? this.parseExprAtom() : this.parseIdentifier(true);
this.state.inPropertyName = oldInPropertyName;
}
return prop.key;
};
// Initialize empty function node.
pp.initFunction = function (node, isAsync) {
node.id = null;
node.generator = false;
node.expression = false;
node.async = !!isAsync;
};
// Parse object or class method.
pp.parseMethod = function (node, isGenerator, isAsync) {
const oldInMethod = this.state.inMethod;
this.state.inMethod = node.kind || true;
this.initFunction(node, isAsync);
this.expect(tt.parenL);
node.params = this.parseBindingList(tt.parenR);
node.generator = !!isGenerator;
this.parseFunctionBody(node);
this.state.inMethod = oldInMethod;
return node;
};
// Parse arrow function expression with given parameters.
pp.parseArrowExpression = function (node, params, isAsync) {
this.initFunction(node, isAsync);
node.params = this.toAssignableList(params, true, "arrow function parameters");
this.parseFunctionBody(node, true);
return this.finishNode(node, "ArrowFunctionExpression");
};
pp.isStrictBody = function (node, isExpression) {
if (!isExpression && node.body.directives.length) {
for (const directive of (node.body.directives: Array)) {
if (directive.value.value === "use strict") {
return true;
}
}
}
return false;
};
// Parse function body and check parameters.
pp.parseFunctionBody = function (node, allowExpression) {
const isExpression = allowExpression && !this.match(tt.braceL);
const oldInAsync = this.state.inAsync;
this.state.inAsync = node.async;
if (isExpression) {
node.body = this.parseMaybeAssign();
node.expression = true;
} else {
// Start a new scope with regard to labels and the `inFunction`
// flag (restore them to their old value afterwards).
const oldInFunc = this.state.inFunction;
const oldInGen = this.state.inGenerator;
const oldLabels = this.state.labels;
this.state.inFunction = true; this.state.inGenerator = node.generator; this.state.labels = [];
node.body = this.parseBlock(true);
node.expression = false;
this.state.inFunction = oldInFunc; this.state.inGenerator = oldInGen; this.state.labels = oldLabels;
}
this.state.inAsync = oldInAsync;
// If this is a strict mode function, verify that argument names
// are not repeated, and it does not try to bind the words `eval`
// or `arguments`.
const isStrict = this.isStrictBody(node, isExpression);
// Also check when allowExpression === true for arrow functions
const checkLVal = this.state.strict || allowExpression || isStrict;
if (isStrict && node.id && node.id.type === "Identifier" && node.id.name === "yield") {
this.raise(node.id.start, "Binding yield in strict mode");
}
if (checkLVal) {
const nameHash = Object.create(null);
const oldStrict = this.state.strict;
if (isStrict) this.state.strict = true;
if (node.id) {
this.checkLVal(node.id, true, undefined, "function name");
}
for (const param of (node.params: Array)) {
if (isStrict && param.type !== "Identifier") {
this.raise(param.start, "Non-simple parameter in strict mode");
}
this.checkLVal(param, true, nameHash, "function parameter list");
}
this.state.strict = oldStrict;
}
};
// Parses a comma-separated list of expressions, and returns them as
// an array. `close` is the token type that ends the list, and
// `allowEmpty` can be turned on to allow subsequent commas with
// nothing in between them to be parsed as `null` (which is needed
// for array literals).
pp.parseExprList = function (close, allowEmpty, refShorthandDefaultPos) {
const elts = [];
let first = true;
while (!this.eat(close)) {
if (first) {
first = false;
} else {
this.expect(tt.comma);
if (this.eat(close)) break;
}
elts.push(this.parseExprListItem(allowEmpty, refShorthandDefaultPos));
}
return elts;
};
pp.parseExprListItem = function (allowEmpty, refShorthandDefaultPos, refNeedsArrowPos) {
let elt;
if (allowEmpty && this.match(tt.comma)) {
elt = null;
} else if (this.match(tt.ellipsis)) {
elt = this.parseSpread(refShorthandDefaultPos);
} else {
elt = this.parseMaybeAssign(false, refShorthandDefaultPos, this.parseParenItem, refNeedsArrowPos);
}
return elt;
};
// Parse the next token as an identifier. If `liberal` is true (used
// when parsing properties), it will also convert keywords into
// identifiers.
pp.parseIdentifier = function (liberal) {
const node = this.startNode();
if (!liberal) {
this.checkReservedWord(this.state.value, this.state.start, !!this.state.type.keyword, false);
}
if (this.match(tt.name)) {
node.name = this.state.value;
} else if (this.state.type.keyword) {
node.name = this.state.type.keyword;
} else {
this.unexpected();
}
if (!liberal && node.name === "await" && this.state.inAsync) {
this.raise(node.start, "invalid use of await inside of an async function");
}
node.loc.identifierName = node.name;
this.next();
return this.finishNode(node, "Identifier");
};
pp.checkReservedWord = function (word, startLoc, checkKeywords, isBinding) {
if (this.isReservedWord(word) || (checkKeywords && this.isKeyword(word))) {
this.raise(startLoc, word + " is a reserved word");
}
if (this.state.strict && (reservedWords.strict(word) || (isBinding && reservedWords.strictBind(word)))) {
this.raise(startLoc, word + " is a reserved word in strict mode");
}
};
// Parses await expression inside async function.
pp.parseAwait = function (node) {
// istanbul ignore next: this condition is checked at the call site so won't be hit here
if (!this.state.inAsync) {
this.unexpected();
}
if (this.match(tt.star)) {
this.raise(node.start, "await* has been removed from the async functions proposal. Use Promise.all() instead.");
}
node.argument = this.parseMaybeUnary();
return this.finishNode(node, "AwaitExpression");
};
// Parses yield expression inside generator.
pp.parseYield = function () {
const node = this.startNode();
this.next();
if (
this.match(tt.semi) ||
this.canInsertSemicolon() ||
(!this.match(tt.star) && !this.state.type.startsExpr)
) {
node.delegate = false;
node.argument = null;
} else {
node.delegate = this.eat(tt.star);
node.argument = this.parseMaybeAssign();
}
return this.finishNode(node, "YieldExpression");
};
babylon-6.18.0/src/parser/index.js 0000664 0000000 0000000 00000005433 13144646270 0017000 0 ustar 00root root 0000000 0000000 import { reservedWords } from "../util/identifier";
import { getOptions } from "../options";
import Tokenizer from "../tokenizer";
export const plugins = {};
const frozenDeprecatedWildcardPluginList = [
"jsx",
"doExpressions",
"objectRestSpread",
"decorators",
"classProperties",
"exportExtensions",
"asyncGenerators",
"functionBind",
"functionSent",
"dynamicImport",
"flow"
];
export default class Parser extends Tokenizer {
constructor(options: Object, input: string) {
options = getOptions(options);
super(options, input);
this.options = options;
this.inModule = this.options.sourceType === "module";
this.input = input;
this.plugins = this.loadPlugins(this.options.plugins);
this.filename = options.sourceFilename;
// If enabled, skip leading hashbang line.
if (this.state.pos === 0 && this.input[0] === "#" && this.input[1] === "!") {
this.skipLineComment(2);
}
}
isReservedWord(word: string): boolean {
if (word === "await") {
return this.inModule;
} else {
return reservedWords[6](word);
}
}
hasPlugin(name: string): boolean {
if (this.plugins["*"] && frozenDeprecatedWildcardPluginList.indexOf(name) > -1) {
return true;
}
return !!this.plugins[name];
}
extend(name: string, f: Function) {
this[name] = f(this[name]);
}
loadAllPlugins() {
// ensure flow plugin loads last, also ensure estree is not loaded with *
const pluginNames = Object.keys(plugins).filter((name) => name !== "flow" && name !== "estree");
pluginNames.push("flow");
pluginNames.forEach((name) => {
const plugin = plugins[name];
if (plugin) plugin(this);
});
}
loadPlugins(pluginList: Array): { [key: string]: boolean } {
// TODO: Deprecate "*" option in next major version of Babylon
if (pluginList.indexOf("*") >= 0) {
this.loadAllPlugins();
return { "*": true };
}
const pluginMap = {};
if (pluginList.indexOf("flow") >= 0) {
// ensure flow plugin loads last
pluginList = pluginList.filter((plugin) => plugin !== "flow");
pluginList.push("flow");
}
if (pluginList.indexOf("estree") >= 0) {
// ensure estree plugin loads first
pluginList = pluginList.filter((plugin) => plugin !== "estree");
pluginList.unshift("estree");
}
for (const name of pluginList) {
if (!pluginMap[name]) {
pluginMap[name] = true;
const plugin = plugins[name];
if (plugin) plugin(this);
}
}
return pluginMap;
}
parse(): {
type: "File",
program: {
type: "Program",
body: Array
}
} {
const file = this.startNode();
const program = this.startNode();
this.nextToken();
return this.parseTopLevel(file, program);
}
}
babylon-6.18.0/src/parser/location.js 0000664 0000000 0000000 00000001127 13144646270 0017475 0 ustar 00root root 0000000 0000000 import { getLineInfo } from "../util/location";
import Parser from "./index";
const pp = Parser.prototype;
// This function is used to raise exceptions on parse errors. It
// takes an offset integer (into the current `input`) to indicate
// the location of the error, attaches the position to the end
// of the error message, and then raises a `SyntaxError` with that
// message.
pp.raise = function (pos, message) {
const loc = getLineInfo(this.input, pos);
message += ` (${loc.line}:${loc.column})`;
const err = new SyntaxError(message);
err.pos = pos;
err.loc = loc;
throw err;
};
babylon-6.18.0/src/parser/lval.js 0000664 0000000 0000000 00000017232 13144646270 0016627 0 ustar 00root root 0000000 0000000 import { types as tt } from "../tokenizer/types";
import Parser from "./index";
const pp = Parser.prototype;
// Convert existing expression atom to assignable pattern
// if possible.
pp.toAssignable = function (node, isBinding, contextDescription) {
if (node) {
switch (node.type) {
case "Identifier":
case "ObjectPattern":
case "ArrayPattern":
case "AssignmentPattern":
break;
case "ObjectExpression":
node.type = "ObjectPattern";
for (const prop of (node.properties: Array)) {
if (prop.type === "ObjectMethod") {
if (prop.kind === "get" || prop.kind === "set") {
this.raise(prop.key.start, "Object pattern can't contain getter or setter");
} else {
this.raise(prop.key.start, "Object pattern can't contain methods");
}
} else {
this.toAssignable(prop, isBinding, "object destructuring pattern");
}
}
break;
case "ObjectProperty":
this.toAssignable(node.value, isBinding, contextDescription);
break;
case "SpreadProperty":
node.type = "RestProperty";
const arg = node.argument;
this.toAssignable(arg, isBinding, contextDescription);
break;
case "ArrayExpression":
node.type = "ArrayPattern";
this.toAssignableList(node.elements, isBinding, contextDescription);
break;
case "AssignmentExpression":
if (node.operator === "=") {
node.type = "AssignmentPattern";
delete node.operator;
} else {
this.raise(node.left.end, "Only '=' operator can be used for specifying default value.");
}
break;
case "MemberExpression":
if (!isBinding) break;
default: {
const message = "Invalid left-hand side" +
(contextDescription ? " in " + contextDescription : /* istanbul ignore next */ "expression");
this.raise(node.start, message);
}
}
}
return node;
};
// Convert list of expression atoms to binding list.
pp.toAssignableList = function (exprList, isBinding, contextDescription) {
let end = exprList.length;
if (end) {
const last = exprList[end - 1];
if (last && last.type === "RestElement") {
--end;
} else if (last && last.type === "SpreadElement") {
last.type = "RestElement";
const arg = last.argument;
this.toAssignable(arg, isBinding, contextDescription);
if (
arg.type !== "Identifier" &&
arg.type !== "MemberExpression" &&
arg.type !== "ArrayPattern"
) {
this.unexpected(arg.start);
}
--end;
}
}
for (let i = 0; i < end; i++) {
const elt = exprList[i];
if (elt) this.toAssignable(elt, isBinding, contextDescription);
}
return exprList;
};
// Convert list of expression atoms to a list of
pp.toReferencedList = function (exprList) {
return exprList;
};
// Parses spread element.
pp.parseSpread = function (refShorthandDefaultPos) {
const node = this.startNode();
this.next();
node.argument = this.parseMaybeAssign(false, refShorthandDefaultPos);
return this.finishNode(node, "SpreadElement");
};
pp.parseRest = function () {
const node = this.startNode();
this.next();
node.argument = this.parseBindingIdentifier();
return this.finishNode(node, "RestElement");
};
pp.shouldAllowYieldIdentifier = function () {
return this.match(tt._yield) && !this.state.strict && !this.state.inGenerator;
};
pp.parseBindingIdentifier = function () {
return this.parseIdentifier(this.shouldAllowYieldIdentifier());
};
// Parses lvalue (assignable) atom.
pp.parseBindingAtom = function () {
switch (this.state.type) {
case tt._yield:
if (this.state.strict || this.state.inGenerator) this.unexpected();
// fall-through
case tt.name:
return this.parseIdentifier(true);
case tt.bracketL:
const node = this.startNode();
this.next();
node.elements = this.parseBindingList(tt.bracketR, true);
return this.finishNode(node, "ArrayPattern");
case tt.braceL:
return this.parseObj(true);
default:
this.unexpected();
}
};
pp.parseBindingList = function (close, allowEmpty) {
const elts = [];
let first = true;
while (!this.eat(close)) {
if (first) {
first = false;
} else {
this.expect(tt.comma);
}
if (allowEmpty && this.match(tt.comma)) {
elts.push(null);
} else if (this.eat(close)) {
break;
} else if (this.match(tt.ellipsis)) {
elts.push(this.parseAssignableListItemTypes(this.parseRest()));
this.expect(close);
break;
} else {
const decorators = [];
while (this.match(tt.at)) {
decorators.push(this.parseDecorator());
}
const left = this.parseMaybeDefault();
if (decorators.length) {
left.decorators = decorators;
}
this.parseAssignableListItemTypes(left);
elts.push(this.parseMaybeDefault(left.start, left.loc.start, left));
}
}
return elts;
};
pp.parseAssignableListItemTypes = function (param) {
return param;
};
// Parses assignment pattern around given atom if possible.
pp.parseMaybeDefault = function (startPos, startLoc, left) {
startLoc = startLoc || this.state.startLoc;
startPos = startPos || this.state.start;
left = left || this.parseBindingAtom();
if (!this.eat(tt.eq)) return left;
const node = this.startNodeAt(startPos, startLoc);
node.left = left;
node.right = this.parseMaybeAssign();
return this.finishNode(node, "AssignmentPattern");
};
// Verify that a node is an lval — something that can be assigned
// to.
pp.checkLVal = function (expr, isBinding, checkClashes, contextDescription) {
switch (expr.type) {
case "Identifier":
this.checkReservedWord(expr.name, expr.start, false, true);
if (checkClashes) {
// we need to prefix this with an underscore for the cases where we have a key of
// `__proto__`. there's a bug in old V8 where the following wouldn't work:
//
// > var obj = Object.create(null);
// undefined
// > obj.__proto__
// null
// > obj.__proto__ = true;
// true
// > obj.__proto__
// null
const key = `_${expr.name}`;
if (checkClashes[key]) {
this.raise(expr.start, "Argument name clash in strict mode");
} else {
checkClashes[key] = true;
}
}
break;
case "MemberExpression":
if (isBinding) this.raise(expr.start, (isBinding ? "Binding" : "Assigning to") + " member expression");
break;
case "ObjectPattern":
for (let prop of (expr.properties: Array)) {
if (prop.type === "ObjectProperty") prop = prop.value;
this.checkLVal(prop, isBinding, checkClashes, "object destructuring pattern");
}
break;
case "ArrayPattern":
for (const elem of (expr.elements: Array)) {
if (elem) this.checkLVal(elem, isBinding, checkClashes, "array destructuring pattern");
}
break;
case "AssignmentPattern":
this.checkLVal(expr.left, isBinding, checkClashes, "assignment pattern");
break;
case "RestProperty":
this.checkLVal(expr.argument, isBinding, checkClashes, "rest property");
break;
case "RestElement":
this.checkLVal(expr.argument, isBinding, checkClashes, "rest element");
break;
default: {
const message = (isBinding ? /* istanbul ignore next */ "Binding invalid" : "Invalid") +
" left-hand side" +
(contextDescription ? " in " + contextDescription : /* istanbul ignore next */ "expression");
this.raise(expr.start, message);
}
}
};
babylon-6.18.0/src/parser/node.js 0000664 0000000 0000000 00000002724 13144646270 0016616 0 ustar 00root root 0000000 0000000 import Parser from "./index";
import { SourceLocation } from "../util/location";
// Start an AST node, attaching a start offset.
const pp = Parser.prototype;
const commentKeys = ["leadingComments", "trailingComments", "innerComments"];
class Node {
constructor(pos?: number, loc?: number, filename?: string) {
this.type = "";
this.start = pos;
this.end = 0;
this.loc = new SourceLocation(loc);
if (filename) this.loc.filename = filename;
}
type: string;
start: ?number;
end: number;
loc: SourceLocation;
__clone(): Node {
const node2 = new Node;
for (const key in this) {
// Do not clone comments that are already attached to the node
if (commentKeys.indexOf(key) < 0) {
node2[key] = this[key];
}
}
return node2;
}
}
pp.startNode = function () {
return new Node(this.state.start, this.state.startLoc, this.filename);
};
pp.startNodeAt = function (pos, loc) {
return new Node(pos, loc, this.filename);
};
function finishNodeAt(node, type, pos, loc) {
node.type = type;
node.end = pos;
node.loc.end = loc;
this.processComment(node);
return node;
}
// Finish an AST node, adding `type` and `end` properties.
pp.finishNode = function (node, type) {
return finishNodeAt.call(this, node, type, this.state.lastTokEnd, this.state.lastTokEndLoc);
};
// Finish node at given position
pp.finishNodeAt = function (node, type, pos, loc) {
return finishNodeAt.call(this, node, type, pos, loc);
};
babylon-6.18.0/src/parser/statement.js 0000664 0000000 0000000 00000104547 13144646270 0017703 0 ustar 00root root 0000000 0000000 /* eslint max-len: 0 */
import { types as tt } from "../tokenizer/types";
import Parser from "./index";
import { lineBreak } from "../util/whitespace";
const pp = Parser.prototype;
// ### Statement parsing
// Parse a program. Initializes the parser, reads any number of
// statements, and wraps them in a Program node. Optionally takes a
// `program` argument. If present, the statements will be appended
// to its body instead of creating a new node.
pp.parseTopLevel = function (file, program) {
program.sourceType = this.options.sourceType;
this.parseBlockBody(program, true, true, tt.eof);
file.program = this.finishNode(program, "Program");
file.comments = this.state.comments;
file.tokens = this.state.tokens;
return this.finishNode(file, "File");
};
const loopLabel = { kind: "loop" }, switchLabel = { kind: "switch" };
// TODO
pp.stmtToDirective = function (stmt) {
const expr = stmt.expression;
const directiveLiteral = this.startNodeAt(expr.start, expr.loc.start);
const directive = this.startNodeAt(stmt.start, stmt.loc.start);
const raw = this.input.slice(expr.start, expr.end);
const val = directiveLiteral.value = raw.slice(1, -1); // remove quotes
this.addExtra(directiveLiteral, "raw", raw);
this.addExtra(directiveLiteral, "rawValue", val);
directive.value = this.finishNodeAt(directiveLiteral, "DirectiveLiteral", expr.end, expr.loc.end);
return this.finishNodeAt(directive, "Directive", stmt.end, stmt.loc.end);
};
// Parse a single statement.
//
// If expecting a statement and finding a slash operator, parse a
// regular expression literal. This is to handle cases like
// `if (foo) /blah/.exec(foo)`, where looking at the previous token
// does not help.
pp.parseStatement = function (declaration, topLevel) {
if (this.match(tt.at)) {
this.parseDecorators(true);
}
const starttype = this.state.type;
const node = this.startNode();
// Most types of statements are recognized by the keyword they
// start with. Many are trivial to parse, some require a bit of
// complexity.
switch (starttype) {
case tt._break: case tt._continue: return this.parseBreakContinueStatement(node, starttype.keyword);
case tt._debugger: return this.parseDebuggerStatement(node);
case tt._do: return this.parseDoStatement(node);
case tt._for: return this.parseForStatement(node);
case tt._function:
if (!declaration) this.unexpected();
return this.parseFunctionStatement(node);
case tt._class:
if (!declaration) this.unexpected();
return this.parseClass(node, true);
case tt._if: return this.parseIfStatement(node);
case tt._return: return this.parseReturnStatement(node);
case tt._switch: return this.parseSwitchStatement(node);
case tt._throw: return this.parseThrowStatement(node);
case tt._try: return this.parseTryStatement(node);
case tt._let:
case tt._const:
if (!declaration) this.unexpected(); // NOTE: falls through to _var
case tt._var:
return this.parseVarStatement(node, starttype);
case tt._while: return this.parseWhileStatement(node);
case tt._with: return this.parseWithStatement(node);
case tt.braceL: return this.parseBlock();
case tt.semi: return this.parseEmptyStatement(node);
case tt._export:
case tt._import:
if (this.hasPlugin("dynamicImport") && this.lookahead().type === tt.parenL) break;
if (!this.options.allowImportExportEverywhere) {
if (!topLevel) {
this.raise(this.state.start, "'import' and 'export' may only appear at the top level");
}
if (!this.inModule) {
this.raise(this.state.start, "'import' and 'export' may appear only with 'sourceType: \"module\"'");
}
}
return starttype === tt._import ? this.parseImport(node) : this.parseExport(node);
case tt.name:
if (this.state.value === "async") {
// peek ahead and see if next token is a function
const state = this.state.clone();
this.next();
if (this.match(tt._function) && !this.canInsertSemicolon()) {
this.expect(tt._function);
return this.parseFunction(node, true, false, true);
} else {
this.state = state;
}
}
}
// If the statement does not start with a statement keyword or a
// brace, it's an ExpressionStatement or LabeledStatement. We
// simply start parsing an expression, and afterwards, if the
// next token is a colon and the expression was a simple
// Identifier node, we switch to interpreting it as a label.
const maybeName = this.state.value;
const expr = this.parseExpression();
if (starttype === tt.name && expr.type === "Identifier" && this.eat(tt.colon)) {
return this.parseLabeledStatement(node, maybeName, expr);
} else {
return this.parseExpressionStatement(node, expr);
}
};
pp.takeDecorators = function (node) {
if (this.state.decorators.length) {
node.decorators = this.state.decorators;
this.state.decorators = [];
}
};
pp.parseDecorators = function (allowExport) {
while (this.match(tt.at)) {
const decorator = this.parseDecorator();
this.state.decorators.push(decorator);
}
if (allowExport && this.match(tt._export)) {
return;
}
if (!this.match(tt._class)) {
this.raise(this.state.start, "Leading decorators must be attached to a class declaration");
}
};
pp.parseDecorator = function () {
if (!this.hasPlugin("decorators")) {
this.unexpected();
}
const node = this.startNode();
this.next();
node.expression = this.parseMaybeAssign();
return this.finishNode(node, "Decorator");
};
pp.parseBreakContinueStatement = function (node, keyword) {
const isBreak = keyword === "break";
this.next();
if (this.isLineTerminator()) {
node.label = null;
} else if (!this.match(tt.name)) {
this.unexpected();
} else {
node.label = this.parseIdentifier();
this.semicolon();
}
// Verify that there is an actual destination to break or
// continue to.
let i;
for (i = 0; i < this.state.labels.length; ++i) {
const lab = this.state.labels[i];
if (node.label == null || lab.name === node.label.name) {
if (lab.kind != null && (isBreak || lab.kind === "loop")) break;
if (node.label && isBreak) break;
}
}
if (i === this.state.labels.length) this.raise(node.start, "Unsyntactic " + keyword);
return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement");
};
pp.parseDebuggerStatement = function (node) {
this.next();
this.semicolon();
return this.finishNode(node, "DebuggerStatement");
};
pp.parseDoStatement = function (node) {
this.next();
this.state.labels.push(loopLabel);
node.body = this.parseStatement(false);
this.state.labels.pop();
this.expect(tt._while);
node.test = this.parseParenExpression();
this.eat(tt.semi);
return this.finishNode(node, "DoWhileStatement");
};
// Disambiguating between a `for` and a `for`/`in` or `for`/`of`
// loop is non-trivial. Basically, we have to parse the init `var`
// statement or expression, disallowing the `in` operator (see
// the second parameter to `parseExpression`), and then check
// whether the next token is `in` or `of`. When there is no init
// part (semicolon immediately after the opening parenthesis), it
// is a regular `for` loop.
pp.parseForStatement = function (node) {
this.next();
this.state.labels.push(loopLabel);
let forAwait = false;
if (this.hasPlugin("asyncGenerators") && this.state.inAsync && this.isContextual("await")) {
forAwait = true;
this.next();
}
this.expect(tt.parenL);
if (this.match(tt.semi)) {
if (forAwait) {
this.unexpected();
}
return this.parseFor(node, null);
}
if (this.match(tt._var) || this.match(tt._let) || this.match(tt._const)) {
const init = this.startNode();
const varKind = this.state.type;
this.next();
this.parseVar(init, true, varKind);
this.finishNode(init, "VariableDeclaration");
if (this.match(tt._in) || this.isContextual("of")) {
if (init.declarations.length === 1 && !init.declarations[0].init) {
return this.parseForIn(node, init, forAwait);
}
}
if (forAwait) {
this.unexpected();
}
return this.parseFor(node, init);
}
const refShorthandDefaultPos = { start: 0 };
const init = this.parseExpression(true, refShorthandDefaultPos);
if (this.match(tt._in) || this.isContextual("of")) {
const description = this.isContextual("of") ? "for-of statement" : "for-in statement";
this.toAssignable(init, undefined, description);
this.checkLVal(init, undefined, undefined, description);
return this.parseForIn(node, init, forAwait);
} else if (refShorthandDefaultPos.start) {
this.unexpected(refShorthandDefaultPos.start);
}
if (forAwait) {
this.unexpected();
}
return this.parseFor(node, init);
};
pp.parseFunctionStatement = function (node) {
this.next();
return this.parseFunction(node, true);
};
pp.parseIfStatement = function (node) {
this.next();
node.test = this.parseParenExpression();
node.consequent = this.parseStatement(false);
node.alternate = this.eat(tt._else) ? this.parseStatement(false) : null;
return this.finishNode(node, "IfStatement");
};
pp.parseReturnStatement = function (node) {
if (!this.state.inFunction && !this.options.allowReturnOutsideFunction) {
this.raise(this.state.start, "'return' outside of function");
}
this.next();
// In `return` (and `break`/`continue`), the keywords with
// optional arguments, we eagerly look for a semicolon or the
// possibility to insert one.
if (this.isLineTerminator()) {
node.argument = null;
} else {
node.argument = this.parseExpression();
this.semicolon();
}
return this.finishNode(node, "ReturnStatement");
};
pp.parseSwitchStatement = function (node) {
this.next();
node.discriminant = this.parseParenExpression();
node.cases = [];
this.expect(tt.braceL);
this.state.labels.push(switchLabel);
// Statements under must be grouped (by label) in SwitchCase
// nodes. `cur` is used to keep the node that we are currently
// adding statements to.
let cur;
for (let sawDefault; !this.match(tt.braceR); ) {
if (this.match(tt._case) || this.match(tt._default)) {
const isCase = this.match(tt._case);
if (cur) this.finishNode(cur, "SwitchCase");
node.cases.push(cur = this.startNode());
cur.consequent = [];
this.next();
if (isCase) {
cur.test = this.parseExpression();
} else {
if (sawDefault) this.raise(this.state.lastTokStart, "Multiple default clauses");
sawDefault = true;
cur.test = null;
}
this.expect(tt.colon);
} else {
if (cur) {
cur.consequent.push(this.parseStatement(true));
} else {
this.unexpected();
}
}
}
if (cur) this.finishNode(cur, "SwitchCase");
this.next(); // Closing brace
this.state.labels.pop();
return this.finishNode(node, "SwitchStatement");
};
pp.parseThrowStatement = function (node) {
this.next();
if (lineBreak.test(this.input.slice(this.state.lastTokEnd, this.state.start)))
this.raise(this.state.lastTokEnd, "Illegal newline after throw");
node.argument = this.parseExpression();
this.semicolon();
return this.finishNode(node, "ThrowStatement");
};
// Reused empty array added for node fields that are always empty.
const empty = [];
pp.parseTryStatement = function (node) {
this.next();
node.block = this.parseBlock();
node.handler = null;
if (this.match(tt._catch)) {
const clause = this.startNode();
this.next();
this.expect(tt.parenL);
clause.param = this.parseBindingAtom();
this.checkLVal(clause.param, true, Object.create(null), "catch clause");
this.expect(tt.parenR);
clause.body = this.parseBlock();
node.handler = this.finishNode(clause, "CatchClause");
}
node.guardedHandlers = empty;
node.finalizer = this.eat(tt._finally) ? this.parseBlock() : null;
if (!node.handler && !node.finalizer) {
this.raise(node.start, "Missing catch or finally clause");
}
return this.finishNode(node, "TryStatement");
};
pp.parseVarStatement = function (node, kind) {
this.next();
this.parseVar(node, false, kind);
this.semicolon();
return this.finishNode(node, "VariableDeclaration");
};
pp.parseWhileStatement = function (node) {
this.next();
node.test = this.parseParenExpression();
this.state.labels.push(loopLabel);
node.body = this.parseStatement(false);
this.state.labels.pop();
return this.finishNode(node, "WhileStatement");
};
pp.parseWithStatement = function (node) {
if (this.state.strict) this.raise(this.state.start, "'with' in strict mode");
this.next();
node.object = this.parseParenExpression();
node.body = this.parseStatement(false);
return this.finishNode(node, "WithStatement");
};
pp.parseEmptyStatement = function (node) {
this.next();
return this.finishNode(node, "EmptyStatement");
};
pp.parseLabeledStatement = function (node, maybeName, expr) {
for (const label of (this.state.labels: Array)) {
if (label.name === maybeName) {
this.raise(expr.start, `Label '${maybeName}' is already declared`);
}
}
const kind = this.state.type.isLoop ? "loop" : this.match(tt._switch) ? "switch" : null;
for (let i = this.state.labels.length - 1; i >= 0; i--) {
const label = this.state.labels[i];
if (label.statementStart === node.start) {
label.statementStart = this.state.start;
label.kind = kind;
} else {
break;
}
}
this.state.labels.push({ name: maybeName, kind: kind, statementStart: this.state.start });
node.body = this.parseStatement(true);
this.state.labels.pop();
node.label = expr;
return this.finishNode(node, "LabeledStatement");
};
pp.parseExpressionStatement = function (node, expr) {
node.expression = expr;
this.semicolon();
return this.finishNode(node, "ExpressionStatement");
};
// Parse a semicolon-enclosed block of statements, handling `"use
// strict"` declarations when `allowStrict` is true (used for
// function bodies).
pp.parseBlock = function (allowDirectives?) {
const node = this.startNode();
this.expect(tt.braceL);
this.parseBlockBody(node, allowDirectives, false, tt.braceR);
return this.finishNode(node, "BlockStatement");
};
pp.isValidDirective = function (stmt) {
return stmt.type === "ExpressionStatement" &&
stmt.expression.type === "StringLiteral" &&
!stmt.expression.extra.parenthesized;
};
pp.parseBlockBody = function (node, allowDirectives, topLevel, end) {
node.body = [];
node.directives = [];
let parsedNonDirective = false;
let oldStrict;
let octalPosition;
while (!this.eat(end)) {
if (!parsedNonDirective && this.state.containsOctal && !octalPosition) {
octalPosition = this.state.octalPosition;
}
const stmt = this.parseStatement(true, topLevel);
if (allowDirectives && !parsedNonDirective && this.isValidDirective(stmt)) {
const directive = this.stmtToDirective(stmt);
node.directives.push(directive);
if (oldStrict === undefined && directive.value.value === "use strict") {
oldStrict = this.state.strict;
this.setStrict(true);
if (octalPosition) {
this.raise(octalPosition, "Octal literal in strict mode");
}
}
continue;
}
parsedNonDirective = true;
node.body.push(stmt);
}
if (oldStrict === false) {
this.setStrict(false);
}
};
// Parse a regular `for` loop. The disambiguation code in
// `parseStatement` will already have parsed the init statement or
// expression.
pp.parseFor = function (node, init) {
node.init = init;
this.expect(tt.semi);
node.test = this.match(tt.semi) ? null : this.parseExpression();
this.expect(tt.semi);
node.update = this.match(tt.parenR) ? null : this.parseExpression();
this.expect(tt.parenR);
node.body = this.parseStatement(false);
this.state.labels.pop();
return this.finishNode(node, "ForStatement");
};
// Parse a `for`/`in` and `for`/`of` loop, which are almost
// same from parser's perspective.
pp.parseForIn = function (node, init, forAwait) {
let type;
if (forAwait) {
this.eatContextual("of");
type = "ForAwaitStatement";
} else {
type = this.match(tt._in) ? "ForInStatement" : "ForOfStatement";
this.next();
}
node.left = init;
node.right = this.parseExpression();
this.expect(tt.parenR);
node.body = this.parseStatement(false);
this.state.labels.pop();
return this.finishNode(node, type);
};
// Parse a list of variable declarations.
pp.parseVar = function (node, isFor, kind) {
node.declarations = [];
node.kind = kind.keyword;
for (;;) {
const decl = this.startNode();
this.parseVarHead(decl);
if (this.eat(tt.eq)) {
decl.init = this.parseMaybeAssign(isFor);
} else if (kind === tt._const && !(this.match(tt._in) || this.isContextual("of"))) {
this.unexpected();
} else if (decl.id.type !== "Identifier" && !(isFor && (this.match(tt._in) || this.isContextual("of")))) {
this.raise(this.state.lastTokEnd, "Complex binding patterns require an initialization value");
} else {
decl.init = null;
}
node.declarations.push(this.finishNode(decl, "VariableDeclarator"));
if (!this.eat(tt.comma)) break;
}
return node;
};
pp.parseVarHead = function (decl) {
decl.id = this.parseBindingAtom();
this.checkLVal(decl.id, true, undefined, "variable declaration");
};
// Parse a function declaration or literal (depending on the
// `isStatement` parameter).
pp.parseFunction = function (node, isStatement, allowExpressionBody, isAsync, optionalId) {
const oldInMethod = this.state.inMethod;
this.state.inMethod = false;
this.initFunction(node, isAsync);
if (this.match(tt.star)) {
if (node.async && !this.hasPlugin("asyncGenerators")) {
this.unexpected();
} else {
node.generator = true;
this.next();
}
}
if (isStatement && !optionalId && !this.match(tt.name) && !this.match(tt._yield)) {
this.unexpected();
}
if (this.match(tt.name) || this.match(tt._yield)) {
node.id = this.parseBindingIdentifier();
}
this.parseFunctionParams(node);
this.parseFunctionBody(node, allowExpressionBody);
this.state.inMethod = oldInMethod;
return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression");
};
pp.parseFunctionParams = function (node) {
this.expect(tt.parenL);
node.params = this.parseBindingList(tt.parenR);
};
// Parse a class declaration or literal (depending on the
// `isStatement` parameter).
pp.parseClass = function (node, isStatement, optionalId) {
this.next();
this.takeDecorators(node);
this.parseClassId(node, isStatement, optionalId);
this.parseClassSuper(node);
this.parseClassBody(node);
return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression");
};
pp.isClassProperty = function () {
return this.match(tt.eq) || this.match(tt.semi) || this.match(tt.braceR);
};
pp.isClassMethod = function () {
return this.match(tt.parenL);
};
pp.isNonstaticConstructor = function (method) {
return !method.computed && !method.static && (
(method.key.name === "constructor") || // Identifier
(method.key.value === "constructor") // Literal
);
};
pp.parseClassBody = function (node) {
// class bodies are implicitly strict
const oldStrict = this.state.strict;
this.state.strict = true;
let hadConstructorCall = false;
let hadConstructor = false;
let decorators = [];
const classBody = this.startNode();
classBody.body = [];
this.expect(tt.braceL);
while (!this.eat(tt.braceR)) {
if (this.eat(tt.semi)) {
if (decorators.length > 0) {
this.raise(this.state.lastTokEnd, "Decorators must not be followed by a semicolon");
}
continue;
}
if (this.match(tt.at)) {
decorators.push(this.parseDecorator());
continue;
}
const method = this.startNode();
// steal the decorators if there are any
if (decorators.length) {
method.decorators = decorators;
decorators = [];
}
method.static = false;
if (this.match(tt.name) && this.state.value === "static") {
const key = this.parseIdentifier(true); // eats 'static'
if (this.isClassMethod()) {
// a method named 'static'
method.kind = "method";
method.computed = false;
method.key = key;
this.parseClassMethod(classBody, method, false, false);
continue;
} else if (this.isClassProperty()) {
// a property named 'static'
method.computed = false;
method.key = key;
classBody.body.push(this.parseClassProperty(method));
continue;
}
// otherwise something static
method.static = true;
}
if (this.eat(tt.star)) {
// a generator
method.kind = "method";
this.parsePropertyName(method);
if (this.isNonstaticConstructor(method)) {
this.raise(method.key.start, "Constructor can't be a generator");
}
if (!method.computed && method.static && (method.key.name === "prototype" || method.key.value === "prototype")) {
this.raise(method.key.start, "Classes may not have static property named prototype");
}
this.parseClassMethod(classBody, method, true, false);
} else {
const isSimple = this.match(tt.name);
const key = this.parsePropertyName(method);
if (!method.computed && method.static && (method.key.name === "prototype" || method.key.value === "prototype")) {
this.raise(method.key.start, "Classes may not have static property named prototype");
}
if (this.isClassMethod()) {
// a normal method
if (this.isNonstaticConstructor(method)) {
if (hadConstructor) {
this.raise(key.start, "Duplicate constructor in the same class");
} else if (method.decorators) {
this.raise(method.start, "You can't attach decorators to a class constructor");
}
hadConstructor = true;
method.kind = "constructor";
} else {
method.kind = "method";
}
this.parseClassMethod(classBody, method, false, false);
} else if (this.isClassProperty()) {
// a normal property
if (this.isNonstaticConstructor(method)) {
this.raise(method.key.start, "Classes may not have a non-static field named 'constructor'");
}
classBody.body.push(this.parseClassProperty(method));
} else if (isSimple && key.name === "async" && !this.isLineTerminator()) {
// an async method
const isGenerator = this.hasPlugin("asyncGenerators") && this.eat(tt.star);
method.kind = "method";
this.parsePropertyName(method);
if (this.isNonstaticConstructor(method)) {
this.raise(method.key.start, "Constructor can't be an async function");
}
this.parseClassMethod(classBody, method, isGenerator, true);
} else if (isSimple && (key.name === "get" || key.name === "set") && !(this.isLineTerminator() && this.match(tt.star))) { // `get\n*` is an uninitialized property named 'get' followed by a generator.
// a getter or setter
method.kind = key.name;
this.parsePropertyName(method);
if (this.isNonstaticConstructor(method)) {
this.raise(method.key.start, "Constructor can't have get/set modifier");
}
this.parseClassMethod(classBody, method, false, false);
this.checkGetterSetterParamCount(method);
} else if (this.hasPlugin("classConstructorCall") && isSimple && key.name === "call" && this.match(tt.name) && this.state.value === "constructor") {
// a (deprecated) call constructor
if (hadConstructorCall) {
this.raise(method.start, "Duplicate constructor call in the same class");
} else if (method.decorators) {
this.raise(method.start, "You can't attach decorators to a class constructor");
}
hadConstructorCall = true;
method.kind = "constructorCall";
this.parsePropertyName(method); // consume "constructor" and make it the method's name
this.parseClassMethod(classBody, method, false, false);
} else if (this.isLineTerminator()) {
// an uninitialized class property (due to ASI, since we don't otherwise recognize the next token)
if (this.isNonstaticConstructor(method)) {
this.raise(method.key.start, "Classes may not have a non-static field named 'constructor'");
}
classBody.body.push(this.parseClassProperty(method));
} else {
this.unexpected();
}
}
}
if (decorators.length) {
this.raise(this.state.start, "You have trailing decorators with no method");
}
node.body = this.finishNode(classBody, "ClassBody");
this.state.strict = oldStrict;
};
pp.parseClassProperty = function (node) {
this.state.inClassProperty = true;
if (this.match(tt.eq)) {
if (!this.hasPlugin("classProperties")) this.unexpected();
this.next();
node.value = this.parseMaybeAssign();
} else {
node.value = null;
}
this.semicolon();
this.state.inClassProperty = false;
return this.finishNode(node, "ClassProperty");
};
pp.parseClassMethod = function (classBody, method, isGenerator, isAsync) {
this.parseMethod(method, isGenerator, isAsync);
classBody.body.push(this.finishNode(method, "ClassMethod"));
};
pp.parseClassId = function (node, isStatement, optionalId) {
if (this.match(tt.name)) {
node.id = this.parseIdentifier();
} else {
if (optionalId || !isStatement) {
node.id = null;
} else {
this.unexpected();
}
}
};
pp.parseClassSuper = function (node) {
node.superClass = this.eat(tt._extends) ? this.parseExprSubscripts() : null;
};
// Parses module export declaration.
pp.parseExport = function (node) {
this.next();
// export * from '...'
if (this.match(tt.star)) {
const specifier = this.startNode();
this.next();
if (this.hasPlugin("exportExtensions") && this.eatContextual("as")) {
specifier.exported = this.parseIdentifier();
node.specifiers = [this.finishNode(specifier, "ExportNamespaceSpecifier")];
this.parseExportSpecifiersMaybe(node);
this.parseExportFrom(node, true);
} else {
this.parseExportFrom(node, true);
return this.finishNode(node, "ExportAllDeclaration");
}
} else if (this.hasPlugin("exportExtensions") && this.isExportDefaultSpecifier()) {
const specifier = this.startNode();
specifier.exported = this.parseIdentifier(true);
node.specifiers = [this.finishNode(specifier, "ExportDefaultSpecifier")];
if (this.match(tt.comma) && this.lookahead().type === tt.star) {
this.expect(tt.comma);
const specifier = this.startNode();
this.expect(tt.star);
this.expectContextual("as");
specifier.exported = this.parseIdentifier();
node.specifiers.push(this.finishNode(specifier, "ExportNamespaceSpecifier"));
} else {
this.parseExportSpecifiersMaybe(node);
}
this.parseExportFrom(node, true);
} else if (this.eat(tt._default)) { // export default ...
let expr = this.startNode();
let needsSemi = false;
if (this.eat(tt._function)) {
expr = this.parseFunction(expr, true, false, false, true);
} else if (this.match(tt._class)) {
expr = this.parseClass(expr, true, true);
} else {
needsSemi = true;
expr = this.parseMaybeAssign();
}
node.declaration = expr;
if (needsSemi) this.semicolon();
this.checkExport(node, true, true);
return this.finishNode(node, "ExportDefaultDeclaration");
} else if (this.shouldParseExportDeclaration()) {
node.specifiers = [];
node.source = null;
node.declaration = this.parseExportDeclaration(node);
} else { // export { x, y as z } [from '...']
node.declaration = null;
node.specifiers = this.parseExportSpecifiers();
this.parseExportFrom(node);
}
this.checkExport(node, true);
return this.finishNode(node, "ExportNamedDeclaration");
};
pp.parseExportDeclaration = function () {
return this.parseStatement(true);
};
pp.isExportDefaultSpecifier = function () {
if (this.match(tt.name)) {
return this.state.value !== "async";
}
if (!this.match(tt._default)) {
return false;
}
const lookahead = this.lookahead();
return lookahead.type === tt.comma || (lookahead.type === tt.name && lookahead.value === "from");
};
pp.parseExportSpecifiersMaybe = function (node) {
if (this.eat(tt.comma)) {
node.specifiers = node.specifiers.concat(this.parseExportSpecifiers());
}
};
pp.parseExportFrom = function (node, expect?) {
if (this.eatContextual("from")) {
node.source = this.match(tt.string) ? this.parseExprAtom() : this.unexpected();
this.checkExport(node);
} else {
if (expect) {
this.unexpected();
} else {
node.source = null;
}
}
this.semicolon();
};
pp.shouldParseExportDeclaration = function (): boolean {
return this.state.type.keyword === "var"
|| this.state.type.keyword === "const"
|| this.state.type.keyword === "let"
|| this.state.type.keyword === "function"
|| this.state.type.keyword === "class"
|| this.isContextual("async");
};
pp.checkExport = function (node, checkNames, isDefault) {
if (checkNames) {
// Check for duplicate exports
if (isDefault) {
// Default exports
this.checkDuplicateExports(node, "default");
} else if (node.specifiers && node.specifiers.length) {
// Named exports
for (const specifier of node.specifiers) {
this.checkDuplicateExports(specifier, specifier.exported.name);
}
} else if (node.declaration) {
// Exported declarations
if (node.declaration.type === "FunctionDeclaration" || node.declaration.type === "ClassDeclaration") {
this.checkDuplicateExports(node, node.declaration.id.name);
} else if (node.declaration.type === "VariableDeclaration") {
for (const declaration of node.declaration.declarations) {
this.checkDeclaration(declaration.id);
}
}
}
}
if (this.state.decorators.length) {
const isClass = node.declaration && (node.declaration.type === "ClassDeclaration" || node.declaration.type === "ClassExpression");
if (!node.declaration || !isClass) {
this.raise(node.start, "You can only use decorators on an export when exporting a class");
}
this.takeDecorators(node.declaration);
}
};
pp.checkDeclaration = function(node) {
if (node.type === "ObjectPattern") {
for (const prop of node.properties) {
this.checkDeclaration(prop);
}
} else if (node.type === "ArrayPattern") {
for (const elem of node.elements) {
if (elem) {
this.checkDeclaration(elem);
}
}
} else if (node.type === "ObjectProperty") {
this.checkDeclaration(node.value);
} else if (node.type === "RestElement" || node.type === "RestProperty") {
this.checkDeclaration(node.argument);
} else if (node.type === "Identifier") {
this.checkDuplicateExports(node, node.name);
}
};
pp.checkDuplicateExports = function(node, name) {
if (this.state.exportedIdentifiers.indexOf(name) > -1) {
this.raiseDuplicateExportError(node, name);
}
this.state.exportedIdentifiers.push(name);
};
pp.raiseDuplicateExportError = function(node, name) {
this.raise(node.start, name === "default" ?
"Only one default export allowed per module." :
`\`${name}\` has already been exported. Exported identifiers must be unique.`
);
};
// Parses a comma-separated list of module exports.
pp.parseExportSpecifiers = function () {
const nodes = [];
let first = true;
let needsFrom;
// export { x, y as z } [from '...']
this.expect(tt.braceL);
while (!this.eat(tt.braceR)) {
if (first) {
first = false;
} else {
this.expect(tt.comma);
if (this.eat(tt.braceR)) break;
}
const isDefault = this.match(tt._default);
if (isDefault && !needsFrom) needsFrom = true;
const node = this.startNode();
node.local = this.parseIdentifier(isDefault);
node.exported = this.eatContextual("as") ? this.parseIdentifier(true) : node.local.__clone();
nodes.push(this.finishNode(node, "ExportSpecifier"));
}
// https://github.com/ember-cli/ember-cli/pull/3739
if (needsFrom && !this.isContextual("from")) {
this.unexpected();
}
return nodes;
};
// Parses import declaration.
pp.parseImport = function (node) {
this.eat(tt._import);
// import '...'
if (this.match(tt.string)) {
node.specifiers = [];
node.source = this.parseExprAtom();
} else {
node.specifiers = [];
this.parseImportSpecifiers(node);
this.expectContextual("from");
node.source = this.match(tt.string) ? this.parseExprAtom() : this.unexpected();
}
this.semicolon();
return this.finishNode(node, "ImportDeclaration");
};
// Parses a comma-separated list of module imports.
pp.parseImportSpecifiers = function (node) {
let first = true;
if (this.match(tt.name)) {
// import defaultObj, { x, y as z } from '...'
const startPos = this.state.start;
const startLoc = this.state.startLoc;
node.specifiers.push(this.parseImportSpecifierDefault(this.parseIdentifier(), startPos, startLoc));
if (!this.eat(tt.comma)) return;
}
if (this.match(tt.star)) {
const specifier = this.startNode();
this.next();
this.expectContextual("as");
specifier.local = this.parseIdentifier();
this.checkLVal(specifier.local, true, undefined, "import namespace specifier");
node.specifiers.push(this.finishNode(specifier, "ImportNamespaceSpecifier"));
return;
}
this.expect(tt.braceL);
while (!this.eat(tt.braceR)) {
if (first) {
first = false;
} else {
// Detect an attempt to deep destructure
if (this.eat(tt.colon)) {
this.unexpected(null, "ES2015 named imports do not destructure. Use another statement for destructuring after the import.");
}
this.expect(tt.comma);
if (this.eat(tt.braceR)) break;
}
this.parseImportSpecifier(node);
}
};
pp.parseImportSpecifier = function (node) {
const specifier = this.startNode();
specifier.imported = this.parseIdentifier(true);
if (this.eatContextual("as")) {
specifier.local = this.parseIdentifier();
} else {
this.checkReservedWord(specifier.imported.name, specifier.start, true, true);
specifier.local = specifier.imported.__clone();
}
this.checkLVal(specifier.local, true, undefined, "import specifier");
node.specifiers.push(this.finishNode(specifier, "ImportSpecifier"));
};
pp.parseImportSpecifierDefault = function (id, startPos, startLoc) {
const node = this.startNodeAt(startPos, startLoc);
node.local = id;
this.checkLVal(node.local, true, undefined, "default import specifier");
return this.finishNode(node, "ImportDefaultSpecifier");
};
babylon-6.18.0/src/parser/util.js 0000664 0000000 0000000 00000004325 13144646270 0016645 0 ustar 00root root 0000000 0000000 import { types as tt } from "../tokenizer/types";
import Parser from "./index";
import { lineBreak } from "../util/whitespace";
const pp = Parser.prototype;
// ## Parser utilities
// TODO
pp.addExtra = function (node, key, val) {
if (!node) return;
const extra = node.extra = node.extra || {};
extra[key] = val;
};
// TODO
pp.isRelational = function (op) {
return this.match(tt.relational) && this.state.value === op;
};
// TODO
pp.expectRelational = function (op) {
if (this.isRelational(op)) {
this.next();
} else {
this.unexpected(null, tt.relational);
}
};
// Tests whether parsed token is a contextual keyword.
pp.isContextual = function (name) {
return this.match(tt.name) && this.state.value === name;
};
// Consumes contextual keyword if possible.
pp.eatContextual = function (name) {
return this.state.value === name && this.eat(tt.name);
};
// Asserts that following token is given contextual keyword.
pp.expectContextual = function (name, message) {
if (!this.eatContextual(name)) this.unexpected(null, message);
};
// Test whether a semicolon can be inserted at the current position.
pp.canInsertSemicolon = function () {
return this.match(tt.eof) ||
this.match(tt.braceR) ||
lineBreak.test(this.input.slice(this.state.lastTokEnd, this.state.start));
};
// TODO
pp.isLineTerminator = function () {
return this.eat(tt.semi) || this.canInsertSemicolon();
};
// Consume a semicolon, or, failing that, see if we are allowed to
// pretend that there is a semicolon at this position.
pp.semicolon = function () {
if (!this.isLineTerminator()) this.unexpected(null, tt.semi);
};
// Expect a token of a given type. If found, consume it, otherwise,
// raise an unexpected token error at given pos.
pp.expect = function (type, pos) {
return this.eat(type) || this.unexpected(pos, type);
};
// Raise an unexpected token error. Can take the expected token type
// instead of a message string.
pp.unexpected = function (pos, messageOrType = "Unexpected token") {
if (messageOrType && typeof messageOrType === "object" && messageOrType.label) {
messageOrType = `Unexpected token, expected ${messageOrType.label}`;
}
this.raise(pos != null ? pos : this.state.start, messageOrType);
};
babylon-6.18.0/src/plugins/ 0000775 0000000 0000000 00000000000 13144646270 0015513 5 ustar 00root root 0000000 0000000 babylon-6.18.0/src/plugins/estree.js 0000664 0000000 0000000 00000017015 13144646270 0017344 0 ustar 00root root 0000000 0000000 import { types as tt } from "../tokenizer/types";
import Parser from "../parser";
const pp = Parser.prototype;
pp.estreeParseRegExpLiteral = function ({ pattern, flags }) {
let regex = null;
try {
regex = new RegExp(pattern, flags);
} catch (e) {
// In environments that don't support these flags value will
// be null as the regex can't be represented natively.
}
const node = this.estreeParseLiteral(regex);
node.regex = { pattern, flags };
return node;
};
pp.estreeParseLiteral = function (value) {
return this.parseLiteral(value, "Literal");
};
pp.directiveToStmt = function (directive) {
const directiveLiteral = directive.value;
const stmt = this.startNodeAt(directive.start, directive.loc.start);
const expression = this.startNodeAt(directiveLiteral.start, directiveLiteral.loc.start);
expression.value = directiveLiteral.value;
expression.raw = directiveLiteral.extra.raw;
stmt.expression = this.finishNodeAt(expression, "Literal", directiveLiteral.end, directiveLiteral.loc.end);
stmt.directive = directiveLiteral.extra.raw.slice(1, -1);
return this.finishNodeAt(stmt, "ExpressionStatement", directive.end, directive.loc.end);
};
function isSimpleProperty(node) {
return node &&
node.type === "Property" &&
node.kind === "init" &&
node.method === false;
}
export default function (instance) {
instance.extend("checkDeclaration", function(inner) {
return function (node) {
if (isSimpleProperty(node)) {
this.checkDeclaration(node.value);
} else {
inner.call(this, node);
}
};
});
instance.extend("checkGetterSetterParamCount", function() {
return function (prop) {
const paramCount = prop.kind === "get" ? 0 : 1;
if (prop.value.params.length !== paramCount) {
const start = prop.start;
if (prop.kind === "get") {
this.raise(start, "getter should have no params");
} else {
this.raise(start, "setter should have exactly one param");
}
}
};
});
instance.extend("checkLVal", function(inner) {
return function (expr, isBinding, checkClashes, ...args) {
switch (expr.type) {
case "ObjectPattern":
expr.properties.forEach((prop) => {
this.checkLVal(
prop.type === "Property" ? prop.value : prop,
isBinding,
checkClashes,
"object destructuring pattern"
);
});
break;
default:
inner.call(this, expr, isBinding, checkClashes, ...args);
}
};
});
instance.extend("checkPropClash", function () {
return function (prop, propHash) {
if (prop.computed || !isSimpleProperty(prop)) return;
const key = prop.key;
// It is either an Identifier or a String/NumericLiteral
const name = key.type === "Identifier" ? key.name : String(key.value);
if (name === "__proto__") {
if (propHash.proto) this.raise(key.start, "Redefinition of __proto__ property");
propHash.proto = true;
}
};
});
instance.extend("isStrictBody", function () {
return function (node, isExpression) {
if (!isExpression && node.body.body.length > 0) {
for (const directive of (node.body.body: Array)) {
if (directive.type === "ExpressionStatement" && directive.expression.type === "Literal") {
if (directive.expression.value === "use strict") return true;
} else {
// Break for the first non literal expression
break;
}
}
}
return false;
};
});
instance.extend("isValidDirective", function () {
return function (stmt) {
return stmt.type === "ExpressionStatement" &&
stmt.expression.type === "Literal" &&
typeof stmt.expression.value === "string" &&
(!stmt.expression.extra || !stmt.expression.extra.parenthesized);
};
});
instance.extend("stmtToDirective", function (inner) {
return function (stmt) {
const directive = inner.call(this, stmt);
const value = stmt.expression.value;
// Reset value to the actual value as in estree mode we want
// the stmt to have the real value and not the raw value
directive.value.value = value;
return directive;
};
});
instance.extend("parseBlockBody", function (inner) {
return function (node, ...args) {
inner.call(this, node, ...args);
node.directives.reverse().forEach((directive) => {
node.body.unshift(this.directiveToStmt(directive));
});
delete node.directives;
};
});
instance.extend("parseClassMethod", function () {
return function (classBody, method, isGenerator, isAsync) {
this.parseMethod(method, isGenerator, isAsync);
if (method.typeParameters) {
method.value.typeParameters = method.typeParameters;
delete method.typeParameters;
}
classBody.body.push(this.finishNode(method, "MethodDefinition"));
};
});
instance.extend("parseExprAtom", function(inner) {
return function (...args) {
switch (this.state.type) {
case tt.regexp:
return this.estreeParseRegExpLiteral(this.state.value);
case tt.num:
case tt.string:
return this.estreeParseLiteral(this.state.value);
case tt._null:
return this.estreeParseLiteral(null);
case tt._true:
return this.estreeParseLiteral(true);
case tt._false:
return this.estreeParseLiteral(false);
default:
return inner.call(this, ...args);
}
};
});
instance.extend("parseLiteral", function(inner) {
return function (...args) {
const node = inner.call(this, ...args);
node.raw = node.extra.raw;
delete node.extra;
return node;
};
});
instance.extend("parseMethod", function(inner) {
return function (node, ...args) {
let funcNode = this.startNode();
funcNode.kind = node.kind; // provide kind, so inner method correctly sets state
funcNode = inner.call(this, funcNode, ...args);
delete funcNode.kind;
node.value = this.finishNode(funcNode, "FunctionExpression");
return node;
};
});
instance.extend("parseObjectMethod", function(inner) {
return function (...args) {
const node = inner.call(this, ...args);
if (node) {
if (node.kind === "method") node.kind = "init";
node.type = "Property";
}
return node;
};
});
instance.extend("parseObjectProperty", function(inner) {
return function (...args) {
const node = inner.call(this, ...args);
if (node) {
node.kind = "init";
node.type = "Property";
}
return node;
};
});
instance.extend("toAssignable", function(inner) {
return function (node, isBinding, ...args) {
if (isSimpleProperty(node)) {
this.toAssignable(node.value, isBinding, ...args);
return node;
} else if (node.type === "ObjectExpression") {
node.type = "ObjectPattern";
for (const prop of (node.properties: Array)) {
if (prop.kind === "get" || prop.kind === "set") {
this.raise(prop.key.start, "Object pattern can't contain getter or setter");
} else if (prop.method) {
this.raise(prop.key.start, "Object pattern can't contain methods");
} else {
this.toAssignable(prop, isBinding, "object destructuring pattern");
}
}
return node;
}
return inner.call(this, node, isBinding, ...args);
};
});
}
babylon-6.18.0/src/plugins/flow.js 0000664 0000000 0000000 00000132326 13144646270 0017027 0 ustar 00root root 0000000 0000000 /* eslint max-len: 0 */
import { types as tt } from "../tokenizer/types";
import Parser from "../parser";
const primitiveTypes = [
"any",
"mixed",
"empty",
"bool",
"boolean",
"number",
"string",
"void",
"null"
];
const pp = Parser.prototype;
pp.flowParseTypeInitialiser = function (tok) {
const oldInType = this.state.inType;
this.state.inType = true;
this.expect(tok || tt.colon);
const type = this.flowParseType();
this.state.inType = oldInType;
return type;
};
pp.flowParsePredicate = function() {
const node = this.startNode();
const moduloLoc = this.state.startLoc;
const moduloPos = this.state.start;
this.expect(tt.modulo);
const checksLoc = this.state.startLoc;
this.expectContextual("checks");
// Force '%' and 'checks' to be adjacent
if (moduloLoc.line !== checksLoc.line || moduloLoc.column !== checksLoc.column - 1) {
this.raise(moduloPos, "Spaces between ´%´ and ´checks´ are not allowed here.");
}
if (this.eat(tt.parenL)) {
node.expression = this.parseExpression();
this.expect(tt.parenR);
return this.finishNode(node, "DeclaredPredicate");
} else {
return this.finishNode(node, "InferredPredicate");
}
};
pp.flowParseTypeAndPredicateInitialiser = function () {
const oldInType = this.state.inType;
this.state.inType = true;
this.expect(tt.colon);
let type = null;
let predicate = null;
if (this.match(tt.modulo)) {
this.state.inType = oldInType;
predicate = this.flowParsePredicate();
} else {
type = this.flowParseType();
this.state.inType = oldInType;
if (this.match(tt.modulo)) {
predicate = this.flowParsePredicate();
}
}
return [type, predicate];
};
pp.flowParseDeclareClass = function (node) {
this.next();
this.flowParseInterfaceish(node, true);
return this.finishNode(node, "DeclareClass");
};
pp.flowParseDeclareFunction = function (node) {
this.next();
const id = node.id = this.parseIdentifier();
const typeNode = this.startNode();
const typeContainer = this.startNode();
if (this.isRelational("<")) {
typeNode.typeParameters = this.flowParseTypeParameterDeclaration();
} else {
typeNode.typeParameters = null;
}
this.expect(tt.parenL);
const tmp = this.flowParseFunctionTypeParams();
typeNode.params = tmp.params;
typeNode.rest = tmp.rest;
this.expect(tt.parenR);
let predicate = null;
[typeNode.returnType, predicate] = this.flowParseTypeAndPredicateInitialiser();
typeContainer.typeAnnotation = this.finishNode(typeNode, "FunctionTypeAnnotation");
typeContainer.predicate = predicate;
id.typeAnnotation = this.finishNode(typeContainer, "TypeAnnotation");
this.finishNode(id, id.type);
this.semicolon();
return this.finishNode(node, "DeclareFunction");
};
pp.flowParseDeclare = function (node) {
if (this.match(tt._class)) {
return this.flowParseDeclareClass(node);
} else if (this.match(tt._function)) {
return this.flowParseDeclareFunction(node);
} else if (this.match(tt._var)) {
return this.flowParseDeclareVariable(node);
} else if (this.isContextual("module")) {
if (this.lookahead().type === tt.dot) {
return this.flowParseDeclareModuleExports(node);
} else {
return this.flowParseDeclareModule(node);
}
} else if (this.isContextual("type")) {
return this.flowParseDeclareTypeAlias(node);
} else if (this.isContextual("opaque")) {
return this.flowParseDeclareOpaqueType(node);
} else if (this.isContextual("interface")) {
return this.flowParseDeclareInterface(node);
} else if (this.match(tt._export)) {
return this.flowParseDeclareExportDeclaration(node);
} else {
this.unexpected();
}
};
pp.flowParseDeclareExportDeclaration = function (node) {
this.expect(tt._export);
if (
this.isContextual("opaque") // declare export opaque ...
) {
node.declaration = this.flowParseDeclare(this.startNode());
node.default = false;
return this.finishNode(node, "DeclareExportDeclaration");
}
throw this.unexpected();
};
pp.flowParseDeclareVariable = function (node) {
this.next();
node.id = this.flowParseTypeAnnotatableIdentifier();
this.semicolon();
return this.finishNode(node, "DeclareVariable");
};
pp.flowParseDeclareModule = function (node) {
this.next();
if (this.match(tt.string)) {
node.id = this.parseExprAtom();
} else {
node.id = this.parseIdentifier();
}
const bodyNode = node.body = this.startNode();
const body = bodyNode.body = [];
this.expect(tt.braceL);
while (!this.match(tt.braceR)) {
let bodyNode = this.startNode();
if (this.match(tt._import)) {
const lookahead = this.lookahead();
if (lookahead.value !== "type" && lookahead.value !== "typeof") {
this.unexpected(null, "Imports within a `declare module` body must always be `import type` or `import typeof`");
}
this.parseImport(bodyNode);
} else {
this.expectContextual("declare", "Only declares and type imports are allowed inside declare module");
bodyNode = this.flowParseDeclare(bodyNode, true);
}
body.push(bodyNode);
}
this.expect(tt.braceR);
this.finishNode(bodyNode, "BlockStatement");
return this.finishNode(node, "DeclareModule");
};
pp.flowParseDeclareModuleExports = function (node) {
this.expectContextual("module");
this.expect(tt.dot);
this.expectContextual("exports");
node.typeAnnotation = this.flowParseTypeAnnotation();
this.semicolon();
return this.finishNode(node, "DeclareModuleExports");
};
pp.flowParseDeclareTypeAlias = function (node) {
this.next();
this.flowParseTypeAlias(node);
return this.finishNode(node, "DeclareTypeAlias");
};
pp.flowParseDeclareOpaqueType = function (node) {
this.next();
this.flowParseOpaqueType(node, true);
return this.finishNode(node, "DeclareOpaqueType");
};
pp.flowParseDeclareInterface = function (node) {
this.next();
this.flowParseInterfaceish(node);
return this.finishNode(node, "DeclareInterface");
};
// Interfaces
pp.flowParseInterfaceish = function (node) {
node.id = this.parseIdentifier();
if (this.isRelational("<")) {
node.typeParameters = this.flowParseTypeParameterDeclaration();
} else {
node.typeParameters = null;
}
node.extends = [];
node.mixins = [];
if (this.eat(tt._extends)) {
do {
node.extends.push(this.flowParseInterfaceExtends());
} while (this.eat(tt.comma));
}
if (this.isContextual("mixins")) {
this.next();
do {
node.mixins.push(this.flowParseInterfaceExtends());
} while (this.eat(tt.comma));
}
node.body = this.flowParseObjectType(true, false, false);
};
pp.flowParseInterfaceExtends = function () {
const node = this.startNode();
node.id = this.flowParseQualifiedTypeIdentifier();
if (this.isRelational("<")) {
node.typeParameters = this.flowParseTypeParameterInstantiation();
} else {
node.typeParameters = null;
}
return this.finishNode(node, "InterfaceExtends");
};
pp.flowParseInterface = function (node) {
this.flowParseInterfaceish(node, false);
return this.finishNode(node, "InterfaceDeclaration");
};
pp.flowParseRestrictedIdentifier = function(liberal) {
if (primitiveTypes.indexOf(this.state.value) > -1) {
this.raise(this.state.start, `Cannot overwrite primitive type ${this.state.value}`);
}
return this.parseIdentifier(liberal);
};
// Type aliases
pp.flowParseTypeAlias = function (node) {
node.id = this.flowParseRestrictedIdentifier();
if (this.isRelational("<")) {
node.typeParameters = this.flowParseTypeParameterDeclaration();
} else {
node.typeParameters = null;
}
node.right = this.flowParseTypeInitialiser(tt.eq);
this.semicolon();
return this.finishNode(node, "TypeAlias");
};
// Opaque type aliases
pp.flowParseOpaqueType = function (node, declare) {
this.expectContextual("type");
node.id = this.flowParseRestrictedIdentifier();
if (this.isRelational("<")) {
node.typeParameters = this.flowParseTypeParameterDeclaration();
} else {
node.typeParameters = null;
}
// Parse the supertype
node.supertype = null;
if (this.match(tt.colon)) {
node.supertype = this.flowParseTypeInitialiser(tt.colon);
}
node.impltype = null;
if (!declare) {
node.impltype = this.flowParseTypeInitialiser(tt.eq);
}
this.semicolon();
return this.finishNode(node, "OpaqueType");
};
// Type annotations
pp.flowParseTypeParameter = function () {
const node = this.startNode();
const variance = this.flowParseVariance();
const ident = this.flowParseTypeAnnotatableIdentifier();
node.name = ident.name;
node.variance = variance;
node.bound = ident.typeAnnotation;
if (this.match(tt.eq)) {
this.eat(tt.eq);
node.default = this.flowParseType();
}
return this.finishNode(node, "TypeParameter");
};
pp.flowParseTypeParameterDeclaration = function () {
const oldInType = this.state.inType;
const node = this.startNode();
node.params = [];
this.state.inType = true;
// istanbul ignore else: this condition is already checked at all call sites
if (this.isRelational("<") || this.match(tt.jsxTagStart)) {
this.next();
} else {
this.unexpected();
}
do {
node.params.push(this.flowParseTypeParameter());
if (!this.isRelational(">")) {
this.expect(tt.comma);
}
} while (!this.isRelational(">"));
this.expectRelational(">");
this.state.inType = oldInType;
return this.finishNode(node, "TypeParameterDeclaration");
};
pp.flowParseTypeParameterInstantiation = function () {
const node = this.startNode();
const oldInType = this.state.inType;
node.params = [];
this.state.inType = true;
this.expectRelational("<");
while (!this.isRelational(">")) {
node.params.push(this.flowParseType());
if (!this.isRelational(">")) {
this.expect(tt.comma);
}
}
this.expectRelational(">");
this.state.inType = oldInType;
return this.finishNode(node, "TypeParameterInstantiation");
};
pp.flowParseObjectPropertyKey = function () {
return (this.match(tt.num) || this.match(tt.string)) ? this.parseExprAtom() : this.parseIdentifier(true);
};
pp.flowParseObjectTypeIndexer = function (node, isStatic, variance) {
node.static = isStatic;
this.expect(tt.bracketL);
if (this.lookahead().type === tt.colon) {
node.id = this.flowParseObjectPropertyKey();
node.key = this.flowParseTypeInitialiser();
} else {
node.id = null;
node.key = this.flowParseType();
}
this.expect(tt.bracketR);
node.value = this.flowParseTypeInitialiser();
node.variance = variance;
this.flowObjectTypeSemicolon();
return this.finishNode(node, "ObjectTypeIndexer");
};
pp.flowParseObjectTypeMethodish = function (node) {
node.params = [];
node.rest = null;
node.typeParameters = null;
if (this.isRelational("<")) {
node.typeParameters = this.flowParseTypeParameterDeclaration();
}
this.expect(tt.parenL);
while (!this.match(tt.parenR) && !this.match(tt.ellipsis)) {
node.params.push(this.flowParseFunctionTypeParam());
if (!this.match(tt.parenR)) {
this.expect(tt.comma);
}
}
if (this.eat(tt.ellipsis)) {
node.rest = this.flowParseFunctionTypeParam();
}
this.expect(tt.parenR);
node.returnType = this.flowParseTypeInitialiser();
return this.finishNode(node, "FunctionTypeAnnotation");
};
pp.flowParseObjectTypeMethod = function (startPos, startLoc, isStatic, key) {
const node = this.startNodeAt(startPos, startLoc);
node.value = this.flowParseObjectTypeMethodish(this.startNodeAt(startPos, startLoc));
node.static = isStatic;
node.key = key;
node.optional = false;
this.flowObjectTypeSemicolon();
return this.finishNode(node, "ObjectTypeProperty");
};
pp.flowParseObjectTypeCallProperty = function (node, isStatic) {
const valueNode = this.startNode();
node.static = isStatic;
node.value = this.flowParseObjectTypeMethodish(valueNode);
this.flowObjectTypeSemicolon();
return this.finishNode(node, "ObjectTypeCallProperty");
};
pp.flowParseObjectType = function (allowStatic, allowExact, allowSpread) {
const oldInType = this.state.inType;
this.state.inType = true;
const nodeStart = this.startNode();
let node;
let propertyKey;
let isStatic = false;
nodeStart.callProperties = [];
nodeStart.properties = [];
nodeStart.indexers = [];
let endDelim;
let exact;
if (allowExact && this.match(tt.braceBarL)) {
this.expect(tt.braceBarL);
endDelim = tt.braceBarR;
exact = true;
} else {
this.expect(tt.braceL);
endDelim = tt.braceR;
exact = false;
}
nodeStart.exact = exact;
while (!this.match(endDelim)) {
let optional = false;
const startPos = this.state.start;
const startLoc = this.state.startLoc;
node = this.startNode();
if (allowStatic && this.isContextual("static") && this.lookahead().type !== tt.colon) {
this.next();
isStatic = true;
}
const variancePos = this.state.start;
const variance = this.flowParseVariance();
if (this.match(tt.bracketL)) {
nodeStart.indexers.push(this.flowParseObjectTypeIndexer(node, isStatic, variance));
} else if (this.match(tt.parenL) || this.isRelational("<")) {
if (variance) {
this.unexpected(variancePos);
}
nodeStart.callProperties.push(this.flowParseObjectTypeCallProperty(node, isStatic));
} else {
if (this.match(tt.ellipsis)) {
if (!allowSpread) {
this.unexpected(
null,
"Spread operator cannot appear in class or interface definitions"
);
}
if (variance) {
this.unexpected(variance.start, "Spread properties cannot have variance");
}
this.expect(tt.ellipsis);
node.argument = this.flowParseType();
this.flowObjectTypeSemicolon();
nodeStart.properties.push(this.finishNode(node, "ObjectTypeSpreadProperty"));
} else {
propertyKey = this.flowParseObjectPropertyKey();
if (this.isRelational("<") || this.match(tt.parenL)) {
// This is a method property
if (variance) {
this.unexpected(variance.start);
}
nodeStart.properties.push(this.flowParseObjectTypeMethod(startPos, startLoc, isStatic, propertyKey));
} else {
if (this.eat(tt.question)) {
optional = true;
}
node.key = propertyKey;
node.value = this.flowParseTypeInitialiser();
node.optional = optional;
node.static = isStatic;
node.variance = variance;
this.flowObjectTypeSemicolon();
nodeStart.properties.push(this.finishNode(node, "ObjectTypeProperty"));
}
}
}
isStatic = false;
}
this.expect(endDelim);
const out = this.finishNode(nodeStart, "ObjectTypeAnnotation");
this.state.inType = oldInType;
return out;
};
pp.flowObjectTypeSemicolon = function () {
if (!this.eat(tt.semi) && !this.eat(tt.comma) &&
!this.match(tt.braceR) && !this.match(tt.braceBarR)) {
this.unexpected();
}
};
pp.flowParseQualifiedTypeIdentifier = function (startPos, startLoc, id) {
startPos = startPos || this.state.start;
startLoc = startLoc || this.state.startLoc;
let node = id || this.parseIdentifier();
while (this.eat(tt.dot)) {
const node2 = this.startNodeAt(startPos, startLoc);
node2.qualification = node;
node2.id = this.parseIdentifier();
node = this.finishNode(node2, "QualifiedTypeIdentifier");
}
return node;
};
pp.flowParseGenericType = function (startPos, startLoc, id) {
const node = this.startNodeAt(startPos, startLoc);
node.typeParameters = null;
node.id = this.flowParseQualifiedTypeIdentifier(startPos, startLoc, id);
if (this.isRelational("<")) {
node.typeParameters = this.flowParseTypeParameterInstantiation();
}
return this.finishNode(node, "GenericTypeAnnotation");
};
pp.flowParseTypeofType = function () {
const node = this.startNode();
this.expect(tt._typeof);
node.argument = this.flowParsePrimaryType();
return this.finishNode(node, "TypeofTypeAnnotation");
};
pp.flowParseTupleType = function () {
const node = this.startNode();
node.types = [];
this.expect(tt.bracketL);
// We allow trailing commas
while (this.state.pos < this.input.length && !this.match(tt.bracketR)) {
node.types.push(this.flowParseType());
if (this.match(tt.bracketR)) break;
this.expect(tt.comma);
}
this.expect(tt.bracketR);
return this.finishNode(node, "TupleTypeAnnotation");
};
pp.flowParseFunctionTypeParam = function () {
let name = null;
let optional = false;
let typeAnnotation = null;
const node = this.startNode();
const lh = this.lookahead();
if (lh.type === tt.colon ||
lh.type === tt.question) {
name = this.parseIdentifier();
if (this.eat(tt.question)) {
optional = true;
}
typeAnnotation = this.flowParseTypeInitialiser();
} else {
typeAnnotation = this.flowParseType();
}
node.name = name;
node.optional = optional;
node.typeAnnotation = typeAnnotation;
return this.finishNode(node, "FunctionTypeParam");
};
pp.reinterpretTypeAsFunctionTypeParam = function (type) {
const node = this.startNodeAt(type.start, type.loc.start);
node.name = null;
node.optional = false;
node.typeAnnotation = type;
return this.finishNode(node, "FunctionTypeParam");
};
pp.flowParseFunctionTypeParams = function (params = []) {
const ret = { params, rest: null };
while (!this.match(tt.parenR) && !this.match(tt.ellipsis)) {
ret.params.push(this.flowParseFunctionTypeParam());
if (!this.match(tt.parenR)) {
this.expect(tt.comma);
}
}
if (this.eat(tt.ellipsis)) {
ret.rest = this.flowParseFunctionTypeParam();
}
return ret;
};
pp.flowIdentToTypeAnnotation = function (startPos, startLoc, node, id) {
switch (id.name) {
case "any":
return this.finishNode(node, "AnyTypeAnnotation");
case "void":
return this.finishNode(node, "VoidTypeAnnotation");
case "bool":
case "boolean":
return this.finishNode(node, "BooleanTypeAnnotation");
case "mixed":
return this.finishNode(node, "MixedTypeAnnotation");
case "empty":
return this.finishNode(node, "EmptyTypeAnnotation");
case "number":
return this.finishNode(node, "NumberTypeAnnotation");
case "string":
return this.finishNode(node, "StringTypeAnnotation");
default:
return this.flowParseGenericType(startPos, startLoc, id);
}
};
// The parsing of types roughly parallels the parsing of expressions, and
// primary types are kind of like primary expressions...they're the
// primitives with which other types are constructed.
pp.flowParsePrimaryType = function () {
const startPos = this.state.start;
const startLoc = this.state.startLoc;
const node = this.startNode();
let tmp;
let type;
let isGroupedType = false;
const oldNoAnonFunctionType = this.state.noAnonFunctionType;
switch (this.state.type) {
case tt.name:
return this.flowIdentToTypeAnnotation(startPos, startLoc, node, this.parseIdentifier());
case tt.braceL:
return this.flowParseObjectType(false, false, true);
case tt.braceBarL:
return this.flowParseObjectType(false, true, true);
case tt.bracketL:
return this.flowParseTupleType();
case tt.relational:
if (this.state.value === "<") {
node.typeParameters = this.flowParseTypeParameterDeclaration();
this.expect(tt.parenL);
tmp = this.flowParseFunctionTypeParams();
node.params = tmp.params;
node.rest = tmp.rest;
this.expect(tt.parenR);
this.expect(tt.arrow);
node.returnType = this.flowParseType();
return this.finishNode(node, "FunctionTypeAnnotation");
}
break;
case tt.parenL:
this.next();
// Check to see if this is actually a grouped type
if (!this.match(tt.parenR) && !this.match(tt.ellipsis)) {
if (this.match(tt.name)) {
const token = this.lookahead().type;
isGroupedType = token !== tt.question && token !== tt.colon;
} else {
isGroupedType = true;
}
}
if (isGroupedType) {
this.state.noAnonFunctionType = false;
type = this.flowParseType();
this.state.noAnonFunctionType = oldNoAnonFunctionType;
// A `,` or a `) =>` means this is an anonymous function type
if (this.state.noAnonFunctionType ||
!(this.match(tt.comma) ||
(this.match(tt.parenR) && this.lookahead().type === tt.arrow))) {
this.expect(tt.parenR);
return type;
} else {
// Eat a comma if there is one
this.eat(tt.comma);
}
}
if (type) {
tmp = this.flowParseFunctionTypeParams(
[this.reinterpretTypeAsFunctionTypeParam(type)],
);
} else {
tmp = this.flowParseFunctionTypeParams();
}
node.params = tmp.params;
node.rest = tmp.rest;
this.expect(tt.parenR);
this.expect(tt.arrow);
node.returnType = this.flowParseType();
node.typeParameters = null;
return this.finishNode(node, "FunctionTypeAnnotation");
case tt.string:
return this.parseLiteral(this.state.value, "StringLiteralTypeAnnotation");
case tt._true: case tt._false:
node.value = this.match(tt._true);
this.next();
return this.finishNode(node, "BooleanLiteralTypeAnnotation");
case tt.plusMin:
if (this.state.value === "-") {
this.next();
if (!this.match(tt.num)) this.unexpected(null, "Unexpected token, expected number");
return this.parseLiteral(-this.state.value, "NumericLiteralTypeAnnotation", node.start, node.loc.start);
}
this.unexpected();
case tt.num:
return this.parseLiteral(this.state.value, "NumericLiteralTypeAnnotation");
case tt._null:
node.value = this.match(tt._null);
this.next();
return this.finishNode(node, "NullLiteralTypeAnnotation");
case tt._this:
node.value = this.match(tt._this);
this.next();
return this.finishNode(node, "ThisTypeAnnotation");
case tt.star:
this.next();
return this.finishNode(node, "ExistentialTypeParam");
default:
if (this.state.type.keyword === "typeof") {
return this.flowParseTypeofType();
}
}
this.unexpected();
};
pp.flowParsePostfixType = function () {
const startPos = this.state.start, startLoc = this.state.startLoc;
let type = this.flowParsePrimaryType();
while (!this.canInsertSemicolon() && this.match(tt.bracketL)) {
const node = this.startNodeAt(startPos, startLoc);
node.elementType = type;
this.expect(tt.bracketL);
this.expect(tt.bracketR);
type = this.finishNode(node, "ArrayTypeAnnotation");
}
return type;
};
pp.flowParsePrefixType = function () {
const node = this.startNode();
if (this.eat(tt.question)) {
node.typeAnnotation = this.flowParsePrefixType();
return this.finishNode(node, "NullableTypeAnnotation");
} else {
return this.flowParsePostfixType();
}
};
pp.flowParseAnonFunctionWithoutParens = function () {
const param = this.flowParsePrefixType();
if (!this.state.noAnonFunctionType && this.eat(tt.arrow)) {
const node = this.startNodeAt(param.start, param.loc.start);
node.params = [this.reinterpretTypeAsFunctionTypeParam(param)];
node.rest = null;
node.returnType = this.flowParseType();
node.typeParameters = null;
return this.finishNode(node, "FunctionTypeAnnotation");
}
return param;
};
pp.flowParseIntersectionType = function () {
const node = this.startNode();
this.eat(tt.bitwiseAND);
const type = this.flowParseAnonFunctionWithoutParens();
node.types = [type];
while (this.eat(tt.bitwiseAND)) {
node.types.push(this.flowParseAnonFunctionWithoutParens());
}
return node.types.length === 1 ? type : this.finishNode(node, "IntersectionTypeAnnotation");
};
pp.flowParseUnionType = function () {
const node = this.startNode();
this.eat(tt.bitwiseOR);
const type = this.flowParseIntersectionType();
node.types = [type];
while (this.eat(tt.bitwiseOR)) {
node.types.push(this.flowParseIntersectionType());
}
return node.types.length === 1 ? type : this.finishNode(node, "UnionTypeAnnotation");
};
pp.flowParseType = function () {
const oldInType = this.state.inType;
this.state.inType = true;
const type = this.flowParseUnionType();
this.state.inType = oldInType;
return type;
};
pp.flowParseTypeAnnotation = function () {
const node = this.startNode();
node.typeAnnotation = this.flowParseTypeInitialiser();
return this.finishNode(node, "TypeAnnotation");
};
pp.flowParseTypeAndPredicateAnnotation = function () {
const node = this.startNode();
[node.typeAnnotation, node.predicate] = this.flowParseTypeAndPredicateInitialiser();
return this.finishNode(node, "TypeAnnotation");
};
pp.flowParseTypeAnnotatableIdentifier = function () {
const ident = this.flowParseRestrictedIdentifier();
if (this.match(tt.colon)) {
ident.typeAnnotation = this.flowParseTypeAnnotation();
this.finishNode(ident, ident.type);
}
return ident;
};
pp.typeCastToParameter = function (node) {
node.expression.typeAnnotation = node.typeAnnotation;
return this.finishNodeAt(
node.expression,
node.expression.type,
node.typeAnnotation.end,
node.typeAnnotation.loc.end
);
};
pp.flowParseVariance = function() {
let variance = null;
if (this.match(tt.plusMin)) {
if (this.state.value === "+") {
variance = "plus";
} else if (this.state.value === "-") {
variance = "minus";
}
this.next();
}
return variance;
};
export default function (instance) {
// plain function return types: function name(): string {}
instance.extend("parseFunctionBody", function (inner) {
return function (node, allowExpression) {
if (this.match(tt.colon) && !allowExpression) {
// if allowExpression is true then we're parsing an arrow function and if
// there's a return type then it's been handled elsewhere
node.returnType = this.flowParseTypeAndPredicateAnnotation();
}
return inner.call(this, node, allowExpression);
};
});
// interfaces
instance.extend("parseStatement", function (inner) {
return function (declaration, topLevel) {
// strict mode handling of `interface` since it's a reserved word
if (this.state.strict && this.match(tt.name) && this.state.value === "interface") {
const node = this.startNode();
this.next();
return this.flowParseInterface(node);
} else {
return inner.call(this, declaration, topLevel);
}
};
});
// declares, interfaces and type aliases
instance.extend("parseExpressionStatement", function (inner) {
return function (node, expr) {
if (expr.type === "Identifier") {
if (expr.name === "declare") {
if (this.match(tt._class)
|| this.match(tt.name)
|| this.match(tt._function)
|| this.match(tt._var)
|| this.match(tt._export)
) {
return this.flowParseDeclare(node);
}
} else if (this.match(tt.name)) {
if (expr.name === "interface") {
return this.flowParseInterface(node);
} else if (expr.name === "type") {
return this.flowParseTypeAlias(node);
} else if (expr.name === "opaque") {
return this.flowParseOpaqueType(node, false);
}
}
}
return inner.call(this, node, expr);
};
});
// export type
instance.extend("shouldParseExportDeclaration", function (inner) {
return function () {
return this.isContextual("type")
|| this.isContextual("interface")
|| this.isContextual("opaque")
|| inner.call(this);
};
});
instance.extend("isExportDefaultSpecifier", function (inner) {
return function () {
if (
this.match(tt.name) &&
(this.state.value === "type"
|| this.state.value === "interface"
|| this.state.value === "opaque")
) {
return false;
}
return inner.call(this);
};
});
instance.extend("parseConditional", function (inner) {
return function (expr, noIn, startPos, startLoc, refNeedsArrowPos) {
// only do the expensive clone if there is a question mark
// and if we come from inside parens
if (refNeedsArrowPos && this.match(tt.question)) {
const state = this.state.clone();
try {
return inner.call(this, expr, noIn, startPos, startLoc);
} catch (err) {
if (err instanceof SyntaxError) {
this.state = state;
refNeedsArrowPos.start = err.pos || this.state.start;
return expr;
} else {
// istanbul ignore next: no such error is expected
throw err;
}
}
}
return inner.call(this, expr, noIn, startPos, startLoc);
};
});
instance.extend("parseParenItem", function (inner) {
return function (node, startPos, startLoc) {
node = inner.call(this, node, startPos, startLoc);
if (this.eat(tt.question)) {
node.optional = true;
}
if (this.match(tt.colon)) {
const typeCastNode = this.startNodeAt(startPos, startLoc);
typeCastNode.expression = node;
typeCastNode.typeAnnotation = this.flowParseTypeAnnotation();
return this.finishNode(typeCastNode, "TypeCastExpression");
}
return node;
};
});
instance.extend("parseExport", function (inner) {
return function (node) {
node = inner.call(this, node);
if (node.type === "ExportNamedDeclaration") {
node.exportKind = node.exportKind || "value";
}
return node;
};
});
instance.extend("parseExportDeclaration", function (inner) {
return function (node) {
if (this.isContextual("type")) {
node.exportKind = "type";
const declarationNode = this.startNode();
this.next();
if (this.match(tt.braceL)) {
// export type { foo, bar };
node.specifiers = this.parseExportSpecifiers();
this.parseExportFrom(node);
return null;
} else {
// export type Foo = Bar;
return this.flowParseTypeAlias(declarationNode);
}
} else if (this.isContextual("opaque")) {
node.exportKind = "type";
const declarationNode = this.startNode();
this.next();
// export opaque type Foo = Bar;
return this.flowParseOpaqueType(declarationNode, false);
} else if (this.isContextual("interface")) {
node.exportKind = "type";
const declarationNode = this.startNode();
this.next();
return this.flowParseInterface(declarationNode);
} else {
return inner.call(this, node);
}
};
});
instance.extend("parseClassId", function (inner) {
return function (node) {
inner.apply(this, arguments);
if (this.isRelational("<")) {
node.typeParameters = this.flowParseTypeParameterDeclaration();
}
};
});
// don't consider `void` to be a keyword as then it'll use the void token type
// and set startExpr
instance.extend("isKeyword", function (inner) {
return function (name) {
if (this.state.inType && name === "void") {
return false;
} else {
return inner.call(this, name);
}
};
});
// ensure that inside flow types, we bypass the jsx parser plugin
instance.extend("readToken", function (inner) {
return function (code) {
if (this.state.inType && (code === 62 || code === 60)) {
return this.finishOp(tt.relational, 1);
} else {
return inner.call(this, code);
}
};
});
// don't lex any token as a jsx one inside a flow type
instance.extend("jsx_readToken", function (inner) {
return function () {
if (!this.state.inType) return inner.call(this);
};
});
instance.extend("toAssignable", function (inner) {
return function (node, isBinding, contextDescription) {
if (node.type === "TypeCastExpression") {
return inner.call(this, this.typeCastToParameter(node), isBinding, contextDescription);
} else {
return inner.call(this, node, isBinding, contextDescription);
}
};
});
// turn type casts that we found in function parameter head into type annotated params
instance.extend("toAssignableList", function (inner) {
return function (exprList, isBinding, contextDescription) {
for (let i = 0; i < exprList.length; i++) {
const expr = exprList[i];
if (expr && expr.type === "TypeCastExpression") {
exprList[i] = this.typeCastToParameter(expr);
}
}
return inner.call(this, exprList, isBinding, contextDescription);
};
});
// this is a list of nodes, from something like a call expression, we need to filter the
// type casts that we've found that are illegal in this context
instance.extend("toReferencedList", function () {
return function (exprList) {
for (let i = 0; i < exprList.length; i++) {
const expr = exprList[i];
if (expr && expr._exprListItem && expr.type === "TypeCastExpression") {
this.raise(expr.start, "Unexpected type cast");
}
}
return exprList;
};
});
// parse an item inside a expression list eg. `(NODE, NODE)` where NODE represents
// the position where this function is called
instance.extend("parseExprListItem", function (inner) {
return function (...args) {
const container = this.startNode();
const node = inner.call(this, ...args);
if (this.match(tt.colon)) {
container._exprListItem = true;
container.expression = node;
container.typeAnnotation = this.flowParseTypeAnnotation();
return this.finishNode(container, "TypeCastExpression");
} else {
return node;
}
};
});
instance.extend("checkLVal", function (inner) {
return function (node) {
if (node.type !== "TypeCastExpression") {
return inner.apply(this, arguments);
}
};
});
// parse class property type annotations
instance.extend("parseClassProperty", function (inner) {
return function (node) {
delete node.variancePos;
if (this.match(tt.colon)) {
node.typeAnnotation = this.flowParseTypeAnnotation();
}
return inner.call(this, node);
};
});
// determine whether or not we're currently in the position where a class method would appear
instance.extend("isClassMethod", function (inner) {
return function () {
return this.isRelational("<") || inner.call(this);
};
});
// determine whether or not we're currently in the position where a class property would appear
instance.extend("isClassProperty", function (inner) {
return function () {
return this.match(tt.colon) || inner.call(this);
};
});
instance.extend("isNonstaticConstructor", function(inner) {
return function (method) {
return !this.match(tt.colon) && inner.call(this, method);
};
});
// parse type parameters for class methods
instance.extend("parseClassMethod", function (inner) {
return function (classBody, method, ...args) {
if (method.variance) {
this.unexpected(method.variancePos);
}
delete method.variance;
delete method.variancePos;
if (this.isRelational("<")) {
method.typeParameters = this.flowParseTypeParameterDeclaration();
}
inner.call(this, classBody, method, ...args);
};
});
// parse a the super class type parameters and implements
instance.extend("parseClassSuper", function (inner) {
return function (node, isStatement) {
inner.call(this, node, isStatement);
if (node.superClass && this.isRelational("<")) {
node.superTypeParameters = this.flowParseTypeParameterInstantiation();
}
if (this.isContextual("implements")) {
this.next();
const implemented = node.implements = [];
do {
const node = this.startNode();
node.id = this.parseIdentifier();
if (this.isRelational("<")) {
node.typeParameters = this.flowParseTypeParameterInstantiation();
} else {
node.typeParameters = null;
}
implemented.push(this.finishNode(node, "ClassImplements"));
} while (this.eat(tt.comma));
}
};
});
instance.extend("parsePropertyName", function (inner) {
return function (node) {
const variancePos = this.state.start;
const variance = this.flowParseVariance();
const key = inner.call(this, node);
node.variance = variance;
node.variancePos = variancePos;
return key;
};
});
// parse type parameters for object method shorthand
instance.extend("parseObjPropValue", function (inner) {
return function (prop) {
if (prop.variance) {
this.unexpected(prop.variancePos);
}
delete prop.variance;
delete prop.variancePos;
let typeParameters;
// method shorthand
if (this.isRelational("<")) {
typeParameters = this.flowParseTypeParameterDeclaration();
if (!this.match(tt.parenL)) this.unexpected();
}
inner.apply(this, arguments);
// add typeParameters if we found them
if (typeParameters) {
(prop.value || prop).typeParameters = typeParameters;
}
};
});
instance.extend("parseAssignableListItemTypes", function () {
return function (param) {
if (this.eat(tt.question)) {
param.optional = true;
}
if (this.match(tt.colon)) {
param.typeAnnotation = this.flowParseTypeAnnotation();
}
this.finishNode(param, param.type);
return param;
};
});
instance.extend("parseMaybeDefault", function (inner) {
return function (...args) {
const node = inner.apply(this, args);
if (node.type === "AssignmentPattern" && node.typeAnnotation && node.right.start < node.typeAnnotation.start) {
this.raise(node.typeAnnotation.start, "Type annotations must come before default assignments, e.g. instead of `age = 25: number` use `age: number = 25`");
}
return node;
};
});
// parse typeof and type imports
instance.extend("parseImportSpecifiers", function (inner) {
return function (node) {
node.importKind = "value";
let kind = null;
if (this.match(tt._typeof)) {
kind = "typeof";
} else if (this.isContextual("type")) {
kind = "type";
}
if (kind) {
const lh = this.lookahead();
if ((lh.type === tt.name && lh.value !== "from") || lh.type === tt.braceL || lh.type === tt.star) {
this.next();
node.importKind = kind;
}
}
inner.call(this, node);
};
});
// parse import-type/typeof shorthand
instance.extend("parseImportSpecifier", function () {
return function (node) {
const specifier = this.startNode();
const firstIdentLoc = this.state.start;
const firstIdent = this.parseIdentifier(true);
let specifierTypeKind = null;
if (firstIdent.name === "type") {
specifierTypeKind = "type";
} else if (firstIdent.name === "typeof") {
specifierTypeKind = "typeof";
}
let isBinding = false;
if (this.isContextual("as")) {
const as_ident = this.parseIdentifier(true);
if (specifierTypeKind !== null && !this.match(tt.name) && !this.state.type.keyword) {
// `import {type as ,` or `import {type as }`
specifier.imported = as_ident;
specifier.importKind = specifierTypeKind;
specifier.local = as_ident.__clone();
} else {
// `import {type as foo`
specifier.imported = firstIdent;
specifier.importKind = null;
specifier.local = this.parseIdentifier();
}
} else if (specifierTypeKind !== null && (this.match(tt.name) || this.state.type.keyword)) {
// `import {type foo`
specifier.imported = this.parseIdentifier(true);
specifier.importKind = specifierTypeKind;
if (this.eatContextual("as")) {
specifier.local = this.parseIdentifier();
} else {
isBinding = true;
specifier.local = specifier.imported.__clone();
}
} else {
isBinding = true;
specifier.imported = firstIdent;
specifier.importKind = null;
specifier.local = specifier.imported.__clone();
}
if (
(node.importKind === "type" || node.importKind === "typeof") &&
(specifier.importKind === "type" || specifier.importKind === "typeof")
) {
this.raise(firstIdentLoc, "`The `type` and `typeof` keywords on named imports can only be used on regular `import` statements. It cannot be used with `import type` or `import typeof` statements`");
}
if (isBinding) this.checkReservedWord(specifier.local.name, specifier.start, true, true);
this.checkLVal(specifier.local, true, undefined, "import specifier");
node.specifiers.push(this.finishNode(specifier, "ImportSpecifier"));
};
});
// parse function type parameters - function foo() {}
instance.extend("parseFunctionParams", function (inner) {
return function (node) {
if (this.isRelational("<")) {
node.typeParameters = this.flowParseTypeParameterDeclaration();
}
inner.call(this, node);
};
});
// parse flow type annotations on variable declarator heads - let foo: string = bar
instance.extend("parseVarHead", function (inner) {
return function (decl) {
inner.call(this, decl);
if (this.match(tt.colon)) {
decl.id.typeAnnotation = this.flowParseTypeAnnotation();
this.finishNode(decl.id, decl.id.type);
}
};
});
// parse the return type of an async arrow function - let foo = (async (): number => {});
instance.extend("parseAsyncArrowFromCallExpression", function (inner) {
return function (node, call) {
if (this.match(tt.colon)) {
const oldNoAnonFunctionType = this.state.noAnonFunctionType;
this.state.noAnonFunctionType = true;
node.returnType = this.flowParseTypeAnnotation();
this.state.noAnonFunctionType = oldNoAnonFunctionType;
}
return inner.call(this, node, call);
};
});
// todo description
instance.extend("shouldParseAsyncArrow", function (inner) {
return function () {
return this.match(tt.colon) || inner.call(this);
};
});
// We need to support type parameter declarations for arrow functions. This
// is tricky. There are three situations we need to handle
//
// 1. This is either JSX or an arrow function. We'll try JSX first. If that
// fails, we'll try an arrow function. If that fails, we'll throw the JSX
// error.
// 2. This is an arrow function. We'll parse the type parameter declaration,
// parse the rest, make sure the rest is an arrow function, and go from
// there
// 3. This is neither. Just call the inner function
instance.extend("parseMaybeAssign", function (inner) {
return function (...args) {
let jsxError = null;
if (tt.jsxTagStart && this.match(tt.jsxTagStart)) {
const state = this.state.clone();
try {
return inner.apply(this, args);
} catch (err) {
if (err instanceof SyntaxError) {
this.state = state;
// Remove `tc.j_expr` and `tc.j_oTag` from context added
// by parsing `jsxTagStart` to stop the JSX plugin from
// messing with the tokens
this.state.context.length -= 2;
jsxError = err;
} else {
// istanbul ignore next: no such error is expected
throw err;
}
}
}
if (jsxError != null || this.isRelational("<")) {
let arrowExpression;
let typeParameters;
try {
typeParameters = this.flowParseTypeParameterDeclaration();
arrowExpression = inner.apply(this, args);
arrowExpression.typeParameters = typeParameters;
arrowExpression.start = typeParameters.start;
arrowExpression.loc.start = typeParameters.loc.start;
} catch (err) {
throw jsxError || err;
}
if (arrowExpression.type === "ArrowFunctionExpression") {
return arrowExpression;
} else if (jsxError != null) {
throw jsxError;
} else {
this.raise(
typeParameters.start,
"Expected an arrow function after this type parameter declaration",
);
}
}
return inner.apply(this, args);
};
});
// handle return types for arrow functions
instance.extend("parseArrow", function (inner) {
return function (node) {
if (this.match(tt.colon)) {
const state = this.state.clone();
try {
const oldNoAnonFunctionType = this.state.noAnonFunctionType;
this.state.noAnonFunctionType = true;
const returnType = this.flowParseTypeAndPredicateAnnotation();
this.state.noAnonFunctionType = oldNoAnonFunctionType;
if (this.canInsertSemicolon()) this.unexpected();
if (!this.match(tt.arrow)) this.unexpected();
// assign after it is clear it is an arrow
node.returnType = returnType;
} catch (err) {
if (err instanceof SyntaxError) {
this.state = state;
} else {
// istanbul ignore next: no such error is expected
throw err;
}
}
}
return inner.call(this, node);
};
});
instance.extend("shouldParseArrow", function (inner) {
return function () {
return this.match(tt.colon) || inner.call(this);
};
});
}
babylon-6.18.0/src/plugins/jsx/ 0000775 0000000 0000000 00000000000 13144646270 0016317 5 ustar 00root root 0000000 0000000 babylon-6.18.0/src/plugins/jsx/fromCodePoint.js 0000664 0000000 0000000 00000005255 13144646270 0021434 0 ustar 00root root 0000000 0000000 // Adapted from String.fromcodepoint to export the function without modifying String
/*! https://mths.be/fromcodepoint v0.2.1 by @mathias */
// The MIT License (MIT)
// Copyright (c) Mathias Bynens
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
// associated documentation files (the "Software"), to deal in the Software without restriction,
// including without limitation the rights to use, copy, modify, merge, publish, distribute,
// sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
// NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
let fromCodePoint = String.fromCodePoint;
if (!fromCodePoint) {
const stringFromCharCode = String.fromCharCode;
const floor = Math.floor;
fromCodePoint = function() {
const MAX_SIZE = 0x4000;
const codeUnits = [];
let highSurrogate;
let lowSurrogate;
let index = -1;
const length = arguments.length;
if (!length) {
return "";
}
let result = "";
while (++index < length) {
let codePoint = Number(arguments[index]);
if (
!isFinite(codePoint) || // `NaN`, `+Infinity`, or `-Infinity`
codePoint < 0 || // not a valid Unicode code point
codePoint > 0x10FFFF || // not a valid Unicode code point
floor(codePoint) != codePoint // not an integer
) {
throw RangeError("Invalid code point: " + codePoint);
}
if (codePoint <= 0xFFFF) { // BMP code point
codeUnits.push(codePoint);
} else { // Astral code point; split in surrogate halves
// https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
codePoint -= 0x10000;
highSurrogate = (codePoint >> 10) + 0xD800;
lowSurrogate = (codePoint % 0x400) + 0xDC00;
codeUnits.push(highSurrogate, lowSurrogate);
}
if (index + 1 == length || codeUnits.length > MAX_SIZE) {
result += stringFromCharCode.apply(null, codeUnits);
codeUnits.length = 0;
}
}
return result;
};
}
export default fromCodePoint;
babylon-6.18.0/src/plugins/jsx/index.js 0000664 0000000 0000000 00000033261 13144646270 0017771 0 ustar 00root root 0000000 0000000 import fromCodePoint from "./fromCodePoint";
import XHTMLEntities from "./xhtml";
import { TokenType, types as tt } from "../../tokenizer/types";
import { TokContext, types as tc } from "../../tokenizer/context";
import Parser from "../../parser";
import { isIdentifierChar, isIdentifierStart } from "../../util/identifier";
import { isNewLine } from "../../util/whitespace";
const HEX_NUMBER = /^[\da-fA-F]+$/;
const DECIMAL_NUMBER = /^\d+$/;
tc.j_oTag = new TokContext("... ", true, true);
tt.jsxName = new TokenType("jsxName");
tt.jsxText = new TokenType("jsxText", { beforeExpr: true });
tt.jsxTagStart = new TokenType("jsxTagStart", { startsExpr: true });
tt.jsxTagEnd = new TokenType("jsxTagEnd");
tt.jsxTagStart.updateContext = function() {
this.state.context.push(tc.j_expr); // treat as beginning of JSX expression
this.state.context.push(tc.j_oTag); // start opening tag context
this.state.exprAllowed = false;
};
tt.jsxTagEnd.updateContext = function(prevType) {
const out = this.state.context.pop();
if (out === tc.j_oTag && prevType === tt.slash || out === tc.j_cTag) {
this.state.context.pop();
this.state.exprAllowed = this.curContext() === tc.j_expr;
} else {
this.state.exprAllowed = true;
}
};
const pp = Parser.prototype;
// Reads inline JSX contents token.
pp.jsxReadToken = function() {
let out = "";
let chunkStart = this.state.pos;
for (;;) {
if (this.state.pos >= this.input.length) {
this.raise(this.state.start, "Unterminated JSX contents");
}
const ch = this.input.charCodeAt(this.state.pos);
switch (ch) {
case 60: // "<"
case 123: // "{"
if (this.state.pos === this.state.start) {
if (ch === 60 && this.state.exprAllowed) {
++this.state.pos;
return this.finishToken(tt.jsxTagStart);
}
return this.getTokenFromCode(ch);
}
out += this.input.slice(chunkStart, this.state.pos);
return this.finishToken(tt.jsxText, out);
case 38: // "&"
out += this.input.slice(chunkStart, this.state.pos);
out += this.jsxReadEntity();
chunkStart = this.state.pos;
break;
default:
if (isNewLine(ch)) {
out += this.input.slice(chunkStart, this.state.pos);
out += this.jsxReadNewLine(true);
chunkStart = this.state.pos;
} else {
++this.state.pos;
}
}
}
};
pp.jsxReadNewLine = function(normalizeCRLF) {
const ch = this.input.charCodeAt(this.state.pos);
let out;
++this.state.pos;
if (ch === 13 && this.input.charCodeAt(this.state.pos) === 10) {
++this.state.pos;
out = normalizeCRLF ? "\n" : "\r\n";
} else {
out = String.fromCharCode(ch);
}
++this.state.curLine;
this.state.lineStart = this.state.pos;
return out;
};
pp.jsxReadString = function(quote) {
let out = "";
let chunkStart = ++this.state.pos;
for (;;) {
if (this.state.pos >= this.input.length) {
this.raise(this.state.start, "Unterminated string constant");
}
const ch = this.input.charCodeAt(this.state.pos);
if (ch === quote) break;
if (ch === 38) { // "&"
out += this.input.slice(chunkStart, this.state.pos);
out += this.jsxReadEntity();
chunkStart = this.state.pos;
} else if (isNewLine(ch)) {
out += this.input.slice(chunkStart, this.state.pos);
out += this.jsxReadNewLine(false);
chunkStart = this.state.pos;
} else {
++this.state.pos;
}
}
out += this.input.slice(chunkStart, this.state.pos++);
return this.finishToken(tt.string, out);
};
pp.jsxReadEntity = function() {
let str = "";
let count = 0;
let entity;
let ch = this.input[this.state.pos];
const startPos = ++this.state.pos;
while (this.state.pos < this.input.length && count++ < 10) {
ch = this.input[this.state.pos++];
if (ch === ";") {
if (str[0] === "#") {
if (str[1] === "x") {
str = str.substr(2);
if (HEX_NUMBER.test(str))
entity = fromCodePoint(parseInt(str, 16));
} else {
str = str.substr(1);
if (DECIMAL_NUMBER.test(str))
entity = fromCodePoint(parseInt(str, 10));
}
} else {
entity = XHTMLEntities[str];
}
break;
}
str += ch;
}
if (!entity) {
this.state.pos = startPos;
return "&";
}
return entity;
};
// Read a JSX identifier (valid tag or attribute name).
//
// Optimized version since JSX identifiers can"t contain
// escape characters and so can be read as single slice.
// Also assumes that first character was already checked
// by isIdentifierStart in readToken.
pp.jsxReadWord = function() {
let ch;
const start = this.state.pos;
do {
ch = this.input.charCodeAt(++this.state.pos);
} while (isIdentifierChar(ch) || ch === 45); // "-"
return this.finishToken(tt.jsxName, this.input.slice(start, this.state.pos));
};
// Transforms JSX element name to string.
function getQualifiedJSXName(object) {
if (object.type === "JSXIdentifier") {
return object.name;
}
if (object.type === "JSXNamespacedName") {
return object.namespace.name + ":" + object.name.name;
}
if (object.type === "JSXMemberExpression") {
return getQualifiedJSXName(object.object) + "." + getQualifiedJSXName(object.property);
}
}
// Parse next token as JSX identifier
pp.jsxParseIdentifier = function() {
const node = this.startNode();
if (this.match(tt.jsxName)) {
node.name = this.state.value;
} else if (this.state.type.keyword) {
node.name = this.state.type.keyword;
} else {
this.unexpected();
}
this.next();
return this.finishNode(node, "JSXIdentifier");
};
// Parse namespaced identifier.
pp.jsxParseNamespacedName = function() {
const startPos = this.state.start;
const startLoc = this.state.startLoc;
const name = this.jsxParseIdentifier();
if (!this.eat(tt.colon)) return name;
const node = this.startNodeAt(startPos, startLoc);
node.namespace = name;
node.name = this.jsxParseIdentifier();
return this.finishNode(node, "JSXNamespacedName");
};
// Parses element name in any form - namespaced, member
// or single identifier.
pp.jsxParseElementName = function() {
const startPos = this.state.start;
const startLoc = this.state.startLoc;
let node = this.jsxParseNamespacedName();
while (this.eat(tt.dot)) {
const newNode = this.startNodeAt(startPos, startLoc);
newNode.object = node;
newNode.property = this.jsxParseIdentifier();
node = this.finishNode(newNode, "JSXMemberExpression");
}
return node;
};
// Parses any type of JSX attribute value.
pp.jsxParseAttributeValue = function() {
let node;
switch (this.state.type) {
case tt.braceL:
node = this.jsxParseExpressionContainer();
if (node.expression.type === "JSXEmptyExpression") {
this.raise(node.start, "JSX attributes must only be assigned a non-empty expression");
} else {
return node;
}
case tt.jsxTagStart:
case tt.string:
node = this.parseExprAtom();
node.extra = null;
return node;
default:
this.raise(this.state.start, "JSX value should be either an expression or a quoted JSX text");
}
};
// JSXEmptyExpression is unique type since it doesn't actually parse anything,
// and so it should start at the end of last read token (left brace) and finish
// at the beginning of the next one (right brace).
pp.jsxParseEmptyExpression = function() {
const node = this.startNodeAt(this.state.lastTokEnd, this.state.lastTokEndLoc);
return this.finishNodeAt(node, "JSXEmptyExpression", this.state.start, this.state.startLoc);
};
// Parse JSX spread child
pp.jsxParseSpreadChild = function() {
const node = this.startNode();
this.expect(tt.braceL);
this.expect(tt.ellipsis);
node.expression = this.parseExpression();
this.expect(tt.braceR);
return this.finishNode(node, "JSXSpreadChild");
};
// Parses JSX expression enclosed into curly brackets.
pp.jsxParseExpressionContainer = function() {
const node = this.startNode();
this.next();
if (this.match(tt.braceR)) {
node.expression = this.jsxParseEmptyExpression();
} else {
node.expression = this.parseExpression();
}
this.expect(tt.braceR);
return this.finishNode(node, "JSXExpressionContainer");
};
// Parses following JSX attribute name-value pair.
pp.jsxParseAttribute = function() {
const node = this.startNode();
if (this.eat(tt.braceL)) {
this.expect(tt.ellipsis);
node.argument = this.parseMaybeAssign();
this.expect(tt.braceR);
return this.finishNode(node, "JSXSpreadAttribute");
}
node.name = this.jsxParseNamespacedName();
node.value = this.eat(tt.eq) ? this.jsxParseAttributeValue() : null;
return this.finishNode(node, "JSXAttribute");
};
// Parses JSX opening tag starting after "<".
pp.jsxParseOpeningElementAt = function(startPos, startLoc) {
const node = this.startNodeAt(startPos, startLoc);
node.attributes = [];
node.name = this.jsxParseElementName();
while (!this.match(tt.slash) && !this.match(tt.jsxTagEnd)) {
node.attributes.push(this.jsxParseAttribute());
}
node.selfClosing = this.eat(tt.slash);
this.expect(tt.jsxTagEnd);
return this.finishNode(node, "JSXOpeningElement");
};
// Parses JSX closing tag starting after "".
pp.jsxParseClosingElementAt = function(startPos, startLoc) {
const node = this.startNodeAt(startPos, startLoc);
node.name = this.jsxParseElementName();
this.expect(tt.jsxTagEnd);
return this.finishNode(node, "JSXClosingElement");
};
// Parses entire JSX element, including it"s opening tag
// (starting after "<"), attributes, contents and closing tag.
pp.jsxParseElementAt = function(startPos, startLoc) {
const node = this.startNodeAt(startPos, startLoc);
const children = [];
const openingElement = this.jsxParseOpeningElementAt(startPos, startLoc);
let closingElement = null;
if (!openingElement.selfClosing) {
contents: for (;;) {
switch (this.state.type) {
case tt.jsxTagStart:
startPos = this.state.start; startLoc = this.state.startLoc;
this.next();
if (this.eat(tt.slash)) {
closingElement = this.jsxParseClosingElementAt(startPos, startLoc);
break contents;
}
children.push(this.jsxParseElementAt(startPos, startLoc));
break;
case tt.jsxText:
children.push(this.parseExprAtom());
break;
case tt.braceL:
if (this.lookahead().type === tt.ellipsis) {
children.push(this.jsxParseSpreadChild());
} else {
children.push(this.jsxParseExpressionContainer());
}
break;
// istanbul ignore next - should never happen
default:
this.unexpected();
}
}
if (getQualifiedJSXName(closingElement.name) !== getQualifiedJSXName(openingElement.name)) {
this.raise(
closingElement.start,
"Expected corresponding JSX closing tag for <" + getQualifiedJSXName(openingElement.name) + ">"
);
}
}
node.openingElement = openingElement;
node.closingElement = closingElement;
node.children = children;
if (this.match(tt.relational) && this.state.value === "<") {
this.raise(this.state.start, "Adjacent JSX elements must be wrapped in an enclosing tag");
}
return this.finishNode(node, "JSXElement");
};
// Parses entire JSX element from current position.
pp.jsxParseElement = function() {
const startPos = this.state.start;
const startLoc = this.state.startLoc;
this.next();
return this.jsxParseElementAt(startPos, startLoc);
};
export default function(instance) {
instance.extend("parseExprAtom", function(inner) {
return function(refShortHandDefaultPos) {
if (this.match(tt.jsxText)) {
const node = this.parseLiteral(this.state.value, "JSXText");
// https://github.com/babel/babel/issues/2078
node.extra = null;
return node;
} else if (this.match(tt.jsxTagStart)) {
return this.jsxParseElement();
} else {
return inner.call(this, refShortHandDefaultPos);
}
};
});
instance.extend("readToken", function(inner) {
return function(code) {
if (this.state.inPropertyName) return inner.call(this, code);
const context = this.curContext();
if (context === tc.j_expr) {
return this.jsxReadToken();
}
if (context === tc.j_oTag || context === tc.j_cTag) {
if (isIdentifierStart(code)) {
return this.jsxReadWord();
}
if (code === 62) {
++this.state.pos;
return this.finishToken(tt.jsxTagEnd);
}
if ((code === 34 || code === 39) && context === tc.j_oTag) {
return this.jsxReadString(code);
}
}
if (code === 60 && this.state.exprAllowed) {
++this.state.pos;
return this.finishToken(tt.jsxTagStart);
}
return inner.call(this, code);
};
});
instance.extend("updateContext", function(inner) {
return function(prevType) {
if (this.match(tt.braceL)) {
const curContext = this.curContext();
if (curContext === tc.j_oTag) {
this.state.context.push(tc.braceExpression);
} else if (curContext === tc.j_expr) {
this.state.context.push(tc.templateQuasi);
} else {
inner.call(this, prevType);
}
this.state.exprAllowed = true;
} else if (this.match(tt.slash) && prevType === tt.jsxTagStart) {
this.state.context.length -= 2; // do not consider JSX expr -> JSX open tag -> ... anymore
this.state.context.push(tc.j_cTag); // reconsider as closing tag context
this.state.exprAllowed = false;
} else {
return inner.call(this, prevType);
}
};
});
}
babylon-6.18.0/src/plugins/jsx/xhtml.js 0000664 0000000 0000000 00000011154 13144646270 0020013 0 ustar 00root root 0000000 0000000 export default {
quot: "\u0022",
amp: "&",
apos: "\u0027",
lt: "<",
gt: ">",
nbsp: "\u00A0",
iexcl: "\u00A1",
cent: "\u00A2",
pound: "\u00A3",
curren: "\u00A4",
yen: "\u00A5",
brvbar: "\u00A6",
sect: "\u00A7",
uml: "\u00A8",
copy: "\u00A9",
ordf: "\u00AA",
laquo: "\u00AB",
not: "\u00AC",
shy: "\u00AD",
reg: "\u00AE",
macr: "\u00AF",
deg: "\u00B0",
plusmn: "\u00B1",
sup2: "\u00B2",
sup3: "\u00B3",
acute: "\u00B4",
micro: "\u00B5",
para: "\u00B6",
middot: "\u00B7",
cedil: "\u00B8",
sup1: "\u00B9",
ordm: "\u00BA",
raquo: "\u00BB",
frac14: "\u00BC",
frac12: "\u00BD",
frac34: "\u00BE",
iquest: "\u00BF",
Agrave: "\u00C0",
Aacute: "\u00C1",
Acirc: "\u00C2",
Atilde: "\u00C3",
Auml: "\u00C4",
Aring: "\u00C5",
AElig: "\u00C6",
Ccedil: "\u00C7",
Egrave: "\u00C8",
Eacute: "\u00C9",
Ecirc: "\u00CA",
Euml: "\u00CB",
Igrave: "\u00CC",
Iacute: "\u00CD",
Icirc: "\u00CE",
Iuml: "\u00CF",
ETH: "\u00D0",
Ntilde: "\u00D1",
Ograve: "\u00D2",
Oacute: "\u00D3",
Ocirc: "\u00D4",
Otilde: "\u00D5",
Ouml: "\u00D6",
times: "\u00D7",
Oslash: "\u00D8",
Ugrave: "\u00D9",
Uacute: "\u00DA",
Ucirc: "\u00DB",
Uuml: "\u00DC",
Yacute: "\u00DD",
THORN: "\u00DE",
szlig: "\u00DF",
agrave: "\u00E0",
aacute: "\u00E1",
acirc: "\u00E2",
atilde: "\u00E3",
auml: "\u00E4",
aring: "\u00E5",
aelig: "\u00E6",
ccedil: "\u00E7",
egrave: "\u00E8",
eacute: "\u00E9",
ecirc: "\u00EA",
euml: "\u00EB",
igrave: "\u00EC",
iacute: "\u00ED",
icirc: "\u00EE",
iuml: "\u00EF",
eth: "\u00F0",
ntilde: "\u00F1",
ograve: "\u00F2",
oacute: "\u00F3",
ocirc: "\u00F4",
otilde: "\u00F5",
ouml: "\u00F6",
divide: "\u00F7",
oslash: "\u00F8",
ugrave: "\u00F9",
uacute: "\u00FA",
ucirc: "\u00FB",
uuml: "\u00FC",
yacute: "\u00FD",
thorn: "\u00FE",
yuml: "\u00FF",
OElig: "\u0152",
oelig: "\u0153",
Scaron: "\u0160",
scaron: "\u0161",
Yuml: "\u0178",
fnof: "\u0192",
circ: "\u02C6",
tilde: "\u02DC",
Alpha: "\u0391",
Beta: "\u0392",
Gamma: "\u0393",
Delta: "\u0394",
Epsilon: "\u0395",
Zeta: "\u0396",
Eta: "\u0397",
Theta: "\u0398",
Iota: "\u0399",
Kappa: "\u039A",
Lambda: "\u039B",
Mu: "\u039C",
Nu: "\u039D",
Xi: "\u039E",
Omicron: "\u039F",
Pi: "\u03A0",
Rho: "\u03A1",
Sigma: "\u03A3",
Tau: "\u03A4",
Upsilon: "\u03A5",
Phi: "\u03A6",
Chi: "\u03A7",
Psi: "\u03A8",
Omega: "\u03A9",
alpha: "\u03B1",
beta: "\u03B2",
gamma: "\u03B3",
delta: "\u03B4",
epsilon: "\u03B5",
zeta: "\u03B6",
eta: "\u03B7",
theta: "\u03B8",
iota: "\u03B9",
kappa: "\u03BA",
lambda: "\u03BB",
mu: "\u03BC",
nu: "\u03BD",
xi: "\u03BE",
omicron: "\u03BF",
pi: "\u03C0",
rho: "\u03C1",
sigmaf: "\u03C2",
sigma: "\u03C3",
tau: "\u03C4",
upsilon: "\u03C5",
phi: "\u03C6",
chi: "\u03C7",
psi: "\u03C8",
omega: "\u03C9",
thetasym: "\u03D1",
upsih: "\u03D2",
piv: "\u03D6",
ensp: "\u2002",
emsp: "\u2003",
thinsp: "\u2009",
zwnj: "\u200C",
zwj: "\u200D",
lrm: "\u200E",
rlm: "\u200F",
ndash: "\u2013",
mdash: "\u2014",
lsquo: "\u2018",
rsquo: "\u2019",
sbquo: "\u201A",
ldquo: "\u201C",
rdquo: "\u201D",
bdquo: "\u201E",
dagger: "\u2020",
Dagger: "\u2021",
bull: "\u2022",
hellip: "\u2026",
permil: "\u2030",
prime: "\u2032",
Prime: "\u2033",
lsaquo: "\u2039",
rsaquo: "\u203A",
oline: "\u203E",
frasl: "\u2044",
euro: "\u20AC",
image: "\u2111",
weierp: "\u2118",
real: "\u211C",
trade: "\u2122",
alefsym: "\u2135",
larr: "\u2190",
uarr: "\u2191",
rarr: "\u2192",
darr: "\u2193",
harr: "\u2194",
crarr: "\u21B5",
lArr: "\u21D0",
uArr: "\u21D1",
rArr: "\u21D2",
dArr: "\u21D3",
hArr: "\u21D4",
forall: "\u2200",
part: "\u2202",
exist: "\u2203",
empty: "\u2205",
nabla: "\u2207",
isin: "\u2208",
notin: "\u2209",
ni: "\u220B",
prod: "\u220F",
sum: "\u2211",
minus: "\u2212",
lowast: "\u2217",
radic: "\u221A",
prop: "\u221D",
infin: "\u221E",
ang: "\u2220",
and: "\u2227",
or: "\u2228",
cap: "\u2229",
cup: "\u222A",
"int": "\u222B",
there4: "\u2234",
sim: "\u223C",
cong: "\u2245",
asymp: "\u2248",
ne: "\u2260",
equiv: "\u2261",
le: "\u2264",
ge: "\u2265",
sub: "\u2282",
sup: "\u2283",
nsub: "\u2284",
sube: "\u2286",
supe: "\u2287",
oplus: "\u2295",
otimes: "\u2297",
perp: "\u22A5",
sdot: "\u22C5",
lceil: "\u2308",
rceil: "\u2309",
lfloor: "\u230A",
rfloor: "\u230B",
lang: "\u2329",
rang: "\u232A",
loz: "\u25CA",
spades: "\u2660",
clubs: "\u2663",
hearts: "\u2665",
diams: "\u2666"
};
babylon-6.18.0/src/tokenizer/ 0000775 0000000 0000000 00000000000 13144646270 0016044 5 ustar 00root root 0000000 0000000 babylon-6.18.0/src/tokenizer/context.js 0000664 0000000 0000000 00000005657 13144646270 0020103 0 ustar 00root root 0000000 0000000 // The algorithm used to determine whether a regexp can appear at a
// given point in the program is loosely based on sweet.js' approach.
// See https://github.com/mozilla/sweet.js/wiki/design
import { types as tt } from "./types";
import { lineBreak } from "../util/whitespace";
export class TokContext {
constructor(
token: string,
isExpr?: boolean,
preserveSpace?: boolean,
override?: Function,
) {
this.token = token;
this.isExpr = !!isExpr;
this.preserveSpace = !!preserveSpace;
this.override = override;
}
token: string;
isExpr: boolean;
preserveSpace: boolean;
override: ?Function;
}
export const types: {
[key: string]: TokContext;
} = {
braceStatement: new TokContext("{", false),
braceExpression: new TokContext("{", true),
templateQuasi: new TokContext("${", true),
parenStatement: new TokContext("(", false),
parenExpression: new TokContext("(", true),
template: new TokContext("`", true, true, (p) => p.readTmplToken()),
functionExpression: new TokContext("function", true)
};
// Token-specific context update code
tt.parenR.updateContext = tt.braceR.updateContext = function () {
if (this.state.context.length === 1) {
this.state.exprAllowed = true;
return;
}
const out = this.state.context.pop();
if (out === types.braceStatement && this.curContext() === types.functionExpression) {
this.state.context.pop();
this.state.exprAllowed = false;
} else if (out === types.templateQuasi) {
this.state.exprAllowed = true;
} else {
this.state.exprAllowed = !out.isExpr;
}
};
tt.name.updateContext = function (prevType) {
this.state.exprAllowed = false;
if (prevType === tt._let || prevType === tt._const || prevType === tt._var) {
if (lineBreak.test(this.input.slice(this.state.end))) {
this.state.exprAllowed = true;
}
}
};
tt.braceL.updateContext = function (prevType) {
this.state.context.push(this.braceIsBlock(prevType) ? types.braceStatement : types.braceExpression);
this.state.exprAllowed = true;
};
tt.dollarBraceL.updateContext = function () {
this.state.context.push(types.templateQuasi);
this.state.exprAllowed = true;
};
tt.parenL.updateContext = function (prevType) {
const statementParens = prevType === tt._if || prevType === tt._for ||
prevType === tt._with || prevType === tt._while;
this.state.context.push(statementParens ? types.parenStatement : types.parenExpression);
this.state.exprAllowed = true;
};
tt.incDec.updateContext = function () {
// tokExprAllowed stays unchanged
};
tt._function.updateContext = function () {
if (this.curContext() !== types.braceStatement) {
this.state.context.push(types.functionExpression);
}
this.state.exprAllowed = false;
};
tt.backQuote.updateContext = function () {
if (this.curContext() === types.template) {
this.state.context.pop();
} else {
this.state.context.push(types.template);
}
this.state.exprAllowed = false;
};
babylon-6.18.0/src/tokenizer/index.js 0000664 0000000 0000000 00000063713 13144646270 0017523 0 ustar 00root root 0000000 0000000 /* eslint max-len: 0 */
import type { TokenType } from "./types";
import { isIdentifierStart, isIdentifierChar, isKeyword } from "../util/identifier";
import { types as tt, keywords as keywordTypes } from "./types";
import { types as ct } from "./context";
import { SourceLocation } from "../util/location";
import { lineBreak, lineBreakG, isNewLine, nonASCIIwhitespace } from "../util/whitespace";
import State from "./state";
// Object type used to represent tokens. Note that normally, tokens
// simply exist as properties on the parser object. This is only
// used for the onToken callback and the external tokenizer.
export class Token {
constructor(state) {
this.type = state.type;
this.value = state.value;
this.start = state.start;
this.end = state.end;
this.loc = new SourceLocation(state.startLoc, state.endLoc);
}
type: TokenType;
value: any;
start: number;
end: number;
loc: SourceLocation;
}
// ## Tokenizer
function codePointToString(code) {
// UTF-16 Decoding
if (code <= 0xFFFF) {
return String.fromCharCode(code);
} else {
return String.fromCharCode(((code - 0x10000) >> 10) + 0xD800, ((code - 0x10000) & 1023) + 0xDC00);
}
}
export default class Tokenizer {
constructor(options, input) {
this.state = new State;
this.state.init(options, input);
}
// Move to the next token
next() {
if (!this.isLookahead) {
this.state.tokens.push(new Token(this.state));
}
this.state.lastTokEnd = this.state.end;
this.state.lastTokStart = this.state.start;
this.state.lastTokEndLoc = this.state.endLoc;
this.state.lastTokStartLoc = this.state.startLoc;
this.nextToken();
}
// TODO
eat(type) {
if (this.match(type)) {
this.next();
return true;
} else {
return false;
}
}
// TODO
match(type) {
return this.state.type === type;
}
// TODO
isKeyword(word) {
return isKeyword(word);
}
// TODO
lookahead() {
const old = this.state;
this.state = old.clone(true);
this.isLookahead = true;
this.next();
this.isLookahead = false;
const curr = this.state.clone(true);
this.state = old;
return curr;
}
// Toggle strict mode. Re-reads the next number or string to please
// pedantic tests (`"use strict"; 010;` should fail).
setStrict(strict) {
this.state.strict = strict;
if (!this.match(tt.num) && !this.match(tt.string)) return;
this.state.pos = this.state.start;
while (this.state.pos < this.state.lineStart) {
this.state.lineStart = this.input.lastIndexOf("\n", this.state.lineStart - 2) + 1;
--this.state.curLine;
}
this.nextToken();
}
curContext() {
return this.state.context[this.state.context.length - 1];
}
// Read a single token, updating the parser object's token-related
// properties.
nextToken() {
const curContext = this.curContext();
if (!curContext || !curContext.preserveSpace) this.skipSpace();
this.state.containsOctal = false;
this.state.octalPosition = null;
this.state.start = this.state.pos;
this.state.startLoc = this.state.curPosition();
if (this.state.pos >= this.input.length) return this.finishToken(tt.eof);
if (curContext.override) {
return curContext.override(this);
} else {
return this.readToken(this.fullCharCodeAtPos());
}
}
readToken(code) {
// Identifier or keyword. '\uXXXX' sequences are allowed in
// identifiers, so '\' also dispatches to that.
if (isIdentifierStart(code) || code === 92 /* '\' */) {
return this.readWord();
} else {
return this.getTokenFromCode(code);
}
}
fullCharCodeAtPos() {
const code = this.input.charCodeAt(this.state.pos);
if (code <= 0xd7ff || code >= 0xe000) return code;
const next = this.input.charCodeAt(this.state.pos + 1);
return (code << 10) + next - 0x35fdc00;
}
pushComment(block, text, start, end, startLoc, endLoc) {
const comment = {
type: block ? "CommentBlock" : "CommentLine",
value: text,
start: start,
end: end,
loc: new SourceLocation(startLoc, endLoc)
};
if (!this.isLookahead) {
this.state.tokens.push(comment);
this.state.comments.push(comment);
this.addComment(comment);
}
}
skipBlockComment() {
const startLoc = this.state.curPosition();
const start = this.state.pos;
const end = this.input.indexOf("*/", this.state.pos += 2);
if (end === -1) this.raise(this.state.pos - 2, "Unterminated comment");
this.state.pos = end + 2;
lineBreakG.lastIndex = start;
let match;
while ((match = lineBreakG.exec(this.input)) && match.index < this.state.pos) {
++this.state.curLine;
this.state.lineStart = match.index + match[0].length;
}
this.pushComment(true, this.input.slice(start + 2, end), start, this.state.pos, startLoc, this.state.curPosition());
}
skipLineComment(startSkip) {
const start = this.state.pos;
const startLoc = this.state.curPosition();
let ch = this.input.charCodeAt(this.state.pos += startSkip);
while (this.state.pos < this.input.length && ch !== 10 && ch !== 13 && ch !== 8232 && ch !== 8233) {
++this.state.pos;
ch = this.input.charCodeAt(this.state.pos);
}
this.pushComment(false, this.input.slice(start + startSkip, this.state.pos), start, this.state.pos, startLoc, this.state.curPosition());
}
// Called at the start of the parse and after every token. Skips
// whitespace and comments, and.
skipSpace() {
loop: while (this.state.pos < this.input.length) {
const ch = this.input.charCodeAt(this.state.pos);
switch (ch) {
case 32: case 160: // ' '
++this.state.pos;
break;
case 13:
if (this.input.charCodeAt(this.state.pos + 1) === 10) {
++this.state.pos;
}
case 10: case 8232: case 8233:
++this.state.pos;
++this.state.curLine;
this.state.lineStart = this.state.pos;
break;
case 47: // '/'
switch (this.input.charCodeAt(this.state.pos + 1)) {
case 42: // '*'
this.skipBlockComment();
break;
case 47:
this.skipLineComment(2);
break;
default:
break loop;
}
break;
default:
if (ch > 8 && ch < 14 || ch >= 5760 && nonASCIIwhitespace.test(String.fromCharCode(ch))) {
++this.state.pos;
} else {
break loop;
}
}
}
}
// Called at the end of every token. Sets `end`, `val`, and
// maintains `context` and `exprAllowed`, and skips the space after
// the token, so that the next one's `start` will point at the
// right position.
finishToken(type, val) {
this.state.end = this.state.pos;
this.state.endLoc = this.state.curPosition();
const prevType = this.state.type;
this.state.type = type;
this.state.value = val;
this.updateContext(prevType);
}
// ### Token reading
// This is the function that is called to fetch the next token. It
// is somewhat obscure, because it works in character codes rather
// than characters, and because operator parsing has been inlined
// into it.
//
// All in the name of speed.
//
readToken_dot() {
const next = this.input.charCodeAt(this.state.pos + 1);
if (next >= 48 && next <= 57) {
return this.readNumber(true);
}
const next2 = this.input.charCodeAt(this.state.pos + 2);
if (next === 46 && next2 === 46) { // 46 = dot '.'
this.state.pos += 3;
return this.finishToken(tt.ellipsis);
} else {
++this.state.pos;
return this.finishToken(tt.dot);
}
}
readToken_slash() { // '/'
if (this.state.exprAllowed) {
++this.state.pos;
return this.readRegexp();
}
const next = this.input.charCodeAt(this.state.pos + 1);
if (next === 61) {
return this.finishOp(tt.assign, 2);
} else {
return this.finishOp(tt.slash, 1);
}
}
readToken_mult_modulo(code) { // '%*'
let type = code === 42 ? tt.star : tt.modulo;
let width = 1;
let next = this.input.charCodeAt(this.state.pos + 1);
if (next === 42) { // '*'
width++;
next = this.input.charCodeAt(this.state.pos + 2);
type = tt.exponent;
}
if (next === 61) {
width++;
type = tt.assign;
}
return this.finishOp(type, width);
}
readToken_pipe_amp(code) { // '|&'
const next = this.input.charCodeAt(this.state.pos + 1);
if (next === code) return this.finishOp(code === 124 ? tt.logicalOR : tt.logicalAND, 2);
if (next === 61) return this.finishOp(tt.assign, 2);
if (code === 124 && next === 125 && this.hasPlugin("flow")) return this.finishOp(tt.braceBarR, 2);
return this.finishOp(code === 124 ? tt.bitwiseOR : tt.bitwiseAND, 1);
}
readToken_caret() { // '^'
const next = this.input.charCodeAt(this.state.pos + 1);
if (next === 61) {
return this.finishOp(tt.assign, 2);
} else {
return this.finishOp(tt.bitwiseXOR, 1);
}
}
readToken_plus_min(code) { // '+-'
const next = this.input.charCodeAt(this.state.pos + 1);
if (next === code) {
if (next === 45 && this.input.charCodeAt(this.state.pos + 2) === 62 && lineBreak.test(this.input.slice(this.state.lastTokEnd, this.state.pos))) {
// A `-->` line comment
this.skipLineComment(3);
this.skipSpace();
return this.nextToken();
}
return this.finishOp(tt.incDec, 2);
}
if (next === 61) {
return this.finishOp(tt.assign, 2);
} else {
return this.finishOp(tt.plusMin, 1);
}
}
readToken_lt_gt(code) { // '<>'
const next = this.input.charCodeAt(this.state.pos + 1);
let size = 1;
if (next === code) {
size = code === 62 && this.input.charCodeAt(this.state.pos + 2) === 62 ? 3 : 2;
if (this.input.charCodeAt(this.state.pos + size) === 61) return this.finishOp(tt.assign, size + 1);
return this.finishOp(tt.bitShift, size);
}
if (next === 33 && code === 60 && this.input.charCodeAt(this.state.pos + 2) === 45 && this.input.charCodeAt(this.state.pos + 3) === 45) {
if (this.inModule) this.unexpected();
// `10;
--> nothing babylon-6.18.0/test/fixtures/core/uncategorised/343/expected.json 0000664 0000000 0000000 00000007516 13144646270 0024675 0 ustar 00root root 0000000 0000000 {
"type": "File",
"start": 0,
"end": 24,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 2,
"column": 12
}
},
"program": {
"type": "Program",
"start": 0,
"end": 24,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 2,
"column": 12
}
},
"sourceType": "script",
"body": [
{
"type": "ExpressionStatement",
"start": 0,
"end": 11,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 11
}
},
"expression": {
"type": "AssignmentExpression",
"start": 0,
"end": 10,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 10
}
},
"operator": "=",
"left": {
"type": "Identifier",
"start": 0,
"end": 1,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 1
}
},
"name": "x"
},
"right": {
"type": "BinaryExpression",
"start": 4,
"end": 10,
"loc": {
"start": {
"line": 1,
"column": 4
},
"end": {
"line": 1,
"column": 10
}
},
"left": {
"type": "UpdateExpression",
"start": 4,
"end": 7,
"loc": {
"start": {
"line": 1,
"column": 4
},
"end": {
"line": 1,
"column": 7
}
},
"operator": "--",
"prefix": false,
"argument": {
"type": "Identifier",
"start": 4,
"end": 5,
"loc": {
"start": {
"line": 1,
"column": 4
},
"end": {
"line": 1,
"column": 5
}
},
"name": "y"
}
},
"operator": ">",
"right": {
"type": "NumericLiteral",
"start": 8,
"end": 10,
"loc": {
"start": {
"line": 1,
"column": 8
},
"end": {
"line": 1,
"column": 10
}
},
"extra": {
"rawValue": 10,
"raw": "10"
},
"value": 10
}
}
},
"trailingComments": [
{
"type": "CommentLine",
"value": " nothing",
"start": 13,
"end": 24,
"loc": {
"start": {
"line": 2,
"column": 1
},
"end": {
"line": 2,
"column": 12
}
}
}
]
}
],
"directives": []
},
"comments": [
{
"type": "CommentLine",
"value": " nothing",
"start": 13,
"end": 24,
"loc": {
"start": {
"line": 2,
"column": 1
},
"end": {
"line": 2,
"column": 12
}
}
}
]
} babylon-6.18.0/test/fixtures/core/uncategorised/344/ 0000775 0000000 0000000 00000000000 13144646270 0022171 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/344/actual.js 0000664 0000000 0000000 00000000036 13144646270 0023777 0 ustar 00root root 0000000 0000000 'use strict';
object.static(); babylon-6.18.0/test/fixtures/core/uncategorised/344/expected.json 0000664 0000000 0000000 00000005721 13144646270 0024672 0 ustar 00root root 0000000 0000000 {
"type": "File",
"start": 0,
"end": 30,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 2,
"column": 16
}
},
"program": {
"type": "Program",
"start": 0,
"end": 30,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 2,
"column": 16
}
},
"sourceType": "script",
"body": [
{
"type": "ExpressionStatement",
"start": 14,
"end": 30,
"loc": {
"start": {
"line": 2,
"column": 0
},
"end": {
"line": 2,
"column": 16
}
},
"expression": {
"type": "CallExpression",
"start": 14,
"end": 29,
"loc": {
"start": {
"line": 2,
"column": 0
},
"end": {
"line": 2,
"column": 15
}
},
"callee": {
"type": "MemberExpression",
"start": 14,
"end": 27,
"loc": {
"start": {
"line": 2,
"column": 0
},
"end": {
"line": 2,
"column": 13
}
},
"object": {
"type": "Identifier",
"start": 14,
"end": 20,
"loc": {
"start": {
"line": 2,
"column": 0
},
"end": {
"line": 2,
"column": 6
}
},
"name": "object"
},
"property": {
"type": "Identifier",
"start": 21,
"end": 27,
"loc": {
"start": {
"line": 2,
"column": 7
},
"end": {
"line": 2,
"column": 13
}
},
"name": "static"
},
"computed": false
},
"arguments": []
}
}
],
"directives": [
{
"type": "Directive",
"start": 0,
"end": 13,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 13
}
},
"value": {
"type": "DirectiveLiteral",
"start": 0,
"end": 12,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 12
}
},
"value": "use strict",
"extra": {
"raw": "'use strict'",
"rawValue": "use strict"
}
}
}
]
}
} babylon-6.18.0/test/fixtures/core/uncategorised/345/ 0000775 0000000 0000000 00000000000 13144646270 0022172 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/345/actual.js 0000664 0000000 0000000 00000000001 13144646270 0023770 0 ustar 00root root 0000000 0000000 { babylon-6.18.0/test/fixtures/core/uncategorised/345/options.json 0000664 0000000 0000000 00000000050 13144646270 0024553 0 ustar 00root root 0000000 0000000 {
"throws": "Unexpected token (1:1)"
} babylon-6.18.0/test/fixtures/core/uncategorised/346/ 0000775 0000000 0000000 00000000000 13144646270 0022173 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/346/actual.js 0000664 0000000 0000000 00000000001 13144646270 0023771 0 ustar 00root root 0000000 0000000 } babylon-6.18.0/test/fixtures/core/uncategorised/346/options.json 0000664 0000000 0000000 00000000050 13144646270 0024554 0 ustar 00root root 0000000 0000000 {
"throws": "Unexpected token (1:0)"
} babylon-6.18.0/test/fixtures/core/uncategorised/347/ 0000775 0000000 0000000 00000000000 13144646270 0022174 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/347/actual.js 0000664 0000000 0000000 00000000003 13144646270 0023774 0 ustar 00root root 0000000 0000000 3ea babylon-6.18.0/test/fixtures/core/uncategorised/347/options.json 0000664 0000000 0000000 00000000046 13144646270 0024562 0 ustar 00root root 0000000 0000000 {
"throws": "Invalid number (1:0)"
} babylon-6.18.0/test/fixtures/core/uncategorised/348/ 0000775 0000000 0000000 00000000000 13144646270 0022175 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/348/actual.js 0000664 0000000 0000000 00000000006 13144646270 0024000 0 ustar 00root root 0000000 0000000 3in [] babylon-6.18.0/test/fixtures/core/uncategorised/348/options.json 0000664 0000000 0000000 00000000070 13144646270 0024560 0 ustar 00root root 0000000 0000000 {
"throws": "Identifier directly after number (1:1)"
} babylon-6.18.0/test/fixtures/core/uncategorised/349/ 0000775 0000000 0000000 00000000000 13144646270 0022176 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/349/actual.js 0000664 0000000 0000000 00000000002 13144646270 0023775 0 ustar 00root root 0000000 0000000 3e babylon-6.18.0/test/fixtures/core/uncategorised/349/options.json 0000664 0000000 0000000 00000000046 13144646270 0024564 0 ustar 00root root 0000000 0000000 {
"throws": "Invalid number (1:0)"
} babylon-6.18.0/test/fixtures/core/uncategorised/35/ 0000775 0000000 0000000 00000000000 13144646270 0022106 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/35/actual.js 0000664 0000000 0000000 00000000030 13144646270 0023706 0 ustar 00root root 0000000 0000000 x = { get "undef"() {} } babylon-6.18.0/test/fixtures/core/uncategorised/35/expected.json 0000664 0000000 0000000 00000007045 13144646270 0024610 0 ustar 00root root 0000000 0000000 {
"type": "File",
"start": 0,
"end": 24,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 24
}
},
"program": {
"type": "Program",
"start": 0,
"end": 24,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 24
}
},
"sourceType": "script",
"body": [
{
"type": "ExpressionStatement",
"start": 0,
"end": 24,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 24
}
},
"expression": {
"type": "AssignmentExpression",
"start": 0,
"end": 24,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
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{ babylon-6.18.0/test/fixtures/core/uncategorised/386/options.json 0000664 0000000 0000000 00000000050 13144646270 0024560 0 ustar 00root root 0000000 0000000 {
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} babylon-6.18.0/test/fixtures/core/uncategorised/387/ 0000775 0000000 0000000 00000000000 13144646270 0022200 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/387/actual.js 0000664 0000000 0000000 00000000037 13144646270 0024007 0 ustar 00root root 0000000 0000000
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babylon-6.18.0/test/fixtures/core/uncategorised/393/ 0000775 0000000 0000000 00000000000 13144646270 0022175 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/393/actual.js 0000664 0000000 0000000 00000000026 13144646270 0024002 0 ustar 00root root 0000000 0000000 ({ set: s(a, b) { } }) babylon-6.18.0/test/fixtures/core/uncategorised/393/options.json 0000664 0000000 0000000 00000000066 13144646270 0024565 0 ustar 00root root 0000000 0000000 {
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babylon-6.18.0/test/fixtures/core/uncategorised/394/ 0000775 0000000 0000000 00000000000 13144646270 0022176 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/394/actual.js 0000664 0000000 0000000 00000000023 13144646270 0024000 0 ustar 00root root 0000000 0000000 ({ get: g(d) { } }) babylon-6.18.0/test/fixtures/core/uncategorised/394/options.json 0000664 0000000 0000000 00000000066 13144646270 0024566 0 ustar 00root root 0000000 0000000 {
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babylon-6.18.0/test/fixtures/core/uncategorised/395/ 0000775 0000000 0000000 00000000000 13144646270 0022177 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/395/actual.js 0000664 0000000 0000000 00000000023 13144646270 0024001 0 ustar 00root root 0000000 0000000 function t(...) { } babylon-6.18.0/test/fixtures/core/uncategorised/395/options.json 0000664 0000000 0000000 00000000051 13144646270 0024561 0 ustar 00root root 0000000 0000000 {
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} babylon-6.18.0/test/fixtures/core/uncategorised/396/ 0000775 0000000 0000000 00000000000 13144646270 0022200 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/396/actual.js 0000664 0000000 0000000 00000000032 13144646270 0024002 0 ustar 00root root 0000000 0000000 function t(...rest, b) { } babylon-6.18.0/test/fixtures/core/uncategorised/396/options.json 0000664 0000000 0000000 00000000066 13144646270 0024570 0 ustar 00root root 0000000 0000000 {
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babylon-6.18.0/test/fixtures/core/uncategorised/397/ 0000775 0000000 0000000 00000000000 13144646270 0022201 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/397/actual.js 0000664 0000000 0000000 00000000022 13144646270 0024002 0 ustar 00root root 0000000 0000000 function t(if) { } babylon-6.18.0/test/fixtures/core/uncategorised/397/options.json 0000664 0000000 0000000 00000000051 13144646270 0024563 0 ustar 00root root 0000000 0000000 {
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} babylon-6.18.0/test/fixtures/core/uncategorised/398/ 0000775 0000000 0000000 00000000000 13144646270 0022202 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/398/actual.js 0000664 0000000 0000000 00000000024 13144646270 0024005 0 ustar 00root root 0000000 0000000 function t(true) { } babylon-6.18.0/test/fixtures/core/uncategorised/398/options.json 0000664 0000000 0000000 00000000051 13144646270 0024564 0 ustar 00root root 0000000 0000000 {
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babylon-6.18.0/test/fixtures/core/uncategorised/411/options.json 0000664 0000000 0000000 00000000054 13144646270 0024551 0 ustar 00root root 0000000 0000000 {
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} babylon-6.18.0/test/fixtures/core/uncategorised/415/ 0000775 0000000 0000000 00000000000 13144646270 0022170 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/415/actual.js 0000664 0000000 0000000 00000000026 13144646270 0023775 0 ustar 00root root 0000000 0000000 for (var i, i2 in {}); babylon-6.18.0/test/fixtures/core/uncategorised/415/options.json 0000664 0000000 0000000 00000000066 13144646270 0024560 0 ustar 00root root 0000000 0000000 {
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babylon-6.18.0/test/fixtures/core/uncategorised/416/ 0000775 0000000 0000000 00000000000 13144646270 0022171 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/416/actual.js 0000664 0000000 0000000 00000000020 13144646270 0023770 0 ustar 00root root 0000000 0000000 for ((i in {})); babylon-6.18.0/test/fixtures/core/uncategorised/416/options.json 0000664 0000000 0000000 00000000066 13144646270 0024561 0 ustar 00root root 0000000 0000000 {
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babylon-6.18.0/test/fixtures/core/uncategorised/417/ 0000775 0000000 0000000 00000000000 13144646270 0022172 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/417/actual.js 0000664 0000000 0000000 00000000022 13144646270 0023773 0 ustar 00root root 0000000 0000000 for (i + 1 in {}); babylon-6.18.0/test/fixtures/core/uncategorised/417/options.json 0000664 0000000 0000000 00000000102 13144646270 0024551 0 ustar 00root root 0000000 0000000 {
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} babylon-6.18.0/test/fixtures/core/uncategorised/501/ 0000775 0000000 0000000 00000000000 13144646270 0022164 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/501/actual.js 0000664 0000000 0000000 00000000062 13144646270 0023771 0 ustar 00root root 0000000 0000000 function hello() { 'use strict'; ({ "\1": 42 }); } babylon-6.18.0/test/fixtures/core/uncategorised/501/options.json 0000664 0000000 0000000 00000000065 13144646270 0024553 0 ustar 00root root 0000000 0000000 {
"throws": "Octal literal in strict mode (1:38)"
} babylon-6.18.0/test/fixtures/core/uncategorised/502/ 0000775 0000000 0000000 00000000000 13144646270 0022165 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/502/actual.js 0000664 0000000 0000000 00000000061 13144646270 0023771 0 ustar 00root root 0000000 0000000 function hello() { 'use strict'; ({ 021: 42 }); } babylon-6.18.0/test/fixtures/core/uncategorised/502/options.json 0000664 0000000 0000000 00000000047 13144646270 0024554 0 ustar 00root root 0000000 0000000 {
"throws": "Invalid number (1:36)"
} babylon-6.18.0/test/fixtures/core/uncategorised/503/ 0000775 0000000 0000000 00000000000 13144646270 0022166 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/503/actual.js 0000664 0000000 0000000 00000000114 13144646270 0023771 0 ustar 00root root 0000000 0000000 function hello() { "use strict"; function inner() { "octal directive\1"; } } babylon-6.18.0/test/fixtures/core/uncategorised/503/options.json 0000664 0000000 0000000 00000000065 13144646270 0024555 0 ustar 00root root 0000000 0000000 {
"throws": "Octal literal in strict mode (1:69)"
} babylon-6.18.0/test/fixtures/core/uncategorised/504/ 0000775 0000000 0000000 00000000000 13144646270 0022167 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/504/actual.js 0000664 0000000 0000000 00000000062 13144646270 0023774 0 ustar 00root root 0000000 0000000 function hello() { "use strict"; var implements; } babylon-6.18.0/test/fixtures/core/uncategorised/504/options.json 0000664 0000000 0000000 00000000106 13144646270 0024552 0 ustar 00root root 0000000 0000000 {
"throws": "implements is a reserved word in strict mode (1:37)"
}
babylon-6.18.0/test/fixtures/core/uncategorised/505/ 0000775 0000000 0000000 00000000000 13144646270 0022170 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/505/actual.js 0000664 0000000 0000000 00000000061 13144646270 0023774 0 ustar 00root root 0000000 0000000 function hello() { "use strict"; var interface; } babylon-6.18.0/test/fixtures/core/uncategorised/505/options.json 0000664 0000000 0000000 00000000105 13144646270 0024552 0 ustar 00root root 0000000 0000000 {
"throws": "interface is a reserved word in strict mode (1:37)"
}
babylon-6.18.0/test/fixtures/core/uncategorised/506/ 0000775 0000000 0000000 00000000000 13144646270 0022171 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/506/actual.js 0000664 0000000 0000000 00000000057 13144646270 0024002 0 ustar 00root root 0000000 0000000 function hello() { "use strict"; var package; } babylon-6.18.0/test/fixtures/core/uncategorised/506/options.json 0000664 0000000 0000000 00000000103 13144646270 0024551 0 ustar 00root root 0000000 0000000 {
"throws": "package is a reserved word in strict mode (1:37)"
}
babylon-6.18.0/test/fixtures/core/uncategorised/507/ 0000775 0000000 0000000 00000000000 13144646270 0022172 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/507/actual.js 0000664 0000000 0000000 00000000057 13144646270 0024003 0 ustar 00root root 0000000 0000000 function hello() { "use strict"; var private; } babylon-6.18.0/test/fixtures/core/uncategorised/507/options.json 0000664 0000000 0000000 00000000103 13144646270 0024552 0 ustar 00root root 0000000 0000000 {
"throws": "private is a reserved word in strict mode (1:37)"
}
babylon-6.18.0/test/fixtures/core/uncategorised/508/ 0000775 0000000 0000000 00000000000 13144646270 0022173 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/508/actual.js 0000664 0000000 0000000 00000000061 13144646270 0023777 0 ustar 00root root 0000000 0000000 function hello() { "use strict"; var protected; } babylon-6.18.0/test/fixtures/core/uncategorised/508/options.json 0000664 0000000 0000000 00000000105 13144646270 0024555 0 ustar 00root root 0000000 0000000 {
"throws": "protected is a reserved word in strict mode (1:37)"
}
babylon-6.18.0/test/fixtures/core/uncategorised/509/ 0000775 0000000 0000000 00000000000 13144646270 0022174 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/509/actual.js 0000664 0000000 0000000 00000000056 13144646270 0024004 0 ustar 00root root 0000000 0000000 function hello() { "use strict"; var public; } babylon-6.18.0/test/fixtures/core/uncategorised/509/options.json 0000664 0000000 0000000 00000000102 13144646270 0024553 0 ustar 00root root 0000000 0000000 {
"throws": "public is a reserved word in strict mode (1:37)"
}
babylon-6.18.0/test/fixtures/core/uncategorised/51/ 0000775 0000000 0000000 00000000000 13144646270 0022104 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/51/actual.js 0000664 0000000 0000000 00000000012 13144646270 0023704 0 ustar 00root root 0000000 0000000 /*a
b*/ 42 babylon-6.18.0/test/fixtures/core/uncategorised/51/expected.json 0000664 0000000 0000000 00000003550 13144646270 0024603 0 ustar 00root root 0000000 0000000 {
"type": "File",
"start": 0,
"end": 10,
"loc": {
"start": {
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},
"end": {
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}
},
"program": {
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"end": 10,
"loc": {
"start": {
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},
"end": {
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}
},
"sourceType": "script",
"body": [
{
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"end": 10,
"loc": {
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},
"end": {
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}
},
"expression": {
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"end": 10,
"loc": {
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},
"end": {
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}
},
"extra": {
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"raw": "42"
},
"value": 42,
"leadingComments": null
},
"leadingComments": [
{
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"value": "a\rb",
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"end": 7,
"loc": {
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},
"end": {
"line": 2,
"column": 3
}
}
}
]
}
],
"directives": []
},
"comments": [
{
"type": "CommentBlock",
"value": "a\rb",
"start": 0,
"end": 7,
"loc": {
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},
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}
}
}
]
} babylon-6.18.0/test/fixtures/core/uncategorised/510/ 0000775 0000000 0000000 00000000000 13144646270 0022164 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/510/actual.js 0000664 0000000 0000000 00000000056 13144646270 0023774 0 ustar 00root root 0000000 0000000 function hello() { "use strict"; var static; } babylon-6.18.0/test/fixtures/core/uncategorised/510/options.json 0000664 0000000 0000000 00000000102 13144646270 0024543 0 ustar 00root root 0000000 0000000 {
"throws": "static is a reserved word in strict mode (1:37)"
}
babylon-6.18.0/test/fixtures/core/uncategorised/511/ 0000775 0000000 0000000 00000000000 13144646270 0022165 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/511/actual.js 0000664 0000000 0000000 00000000050 13144646270 0023767 0 ustar 00root root 0000000 0000000 function hello(static) { "use strict"; } babylon-6.18.0/test/fixtures/core/uncategorised/511/options.json 0000664 0000000 0000000 00000000102 13144646270 0024544 0 ustar 00root root 0000000 0000000 {
"throws": "static is a reserved word in strict mode (1:15)"
}
babylon-6.18.0/test/fixtures/core/uncategorised/512/ 0000775 0000000 0000000 00000000000 13144646270 0022166 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/512/actual.js 0000664 0000000 0000000 00000000043 13144646270 0023772 0 ustar 00root root 0000000 0000000 function static() { "use strict"; } babylon-6.18.0/test/fixtures/core/uncategorised/512/options.json 0000664 0000000 0000000 00000000101 13144646270 0024544 0 ustar 00root root 0000000 0000000 {
"throws": "static is a reserved word in strict mode (1:9)"
}
babylon-6.18.0/test/fixtures/core/uncategorised/513/ 0000775 0000000 0000000 00000000000 13144646270 0022167 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/513/actual.js 0000664 0000000 0000000 00000000043 13144646270 0023773 0 ustar 00root root 0000000 0000000 "use strict"; function static() { } babylon-6.18.0/test/fixtures/core/uncategorised/513/options.json 0000664 0000000 0000000 00000000102 13144646270 0024546 0 ustar 00root root 0000000 0000000 {
"throws": "static is a reserved word in strict mode (1:23)"
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babylon-6.18.0/test/fixtures/core/uncategorised/514/ 0000775 0000000 0000000 00000000000 13144646270 0022170 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/514/actual.js 0000664 0000000 0000000 00000000042 13144646270 0023773 0 ustar 00root root 0000000 0000000 function a(t, t) { "use strict"; } babylon-6.18.0/test/fixtures/core/uncategorised/514/options.json 0000664 0000000 0000000 00000000073 13144646270 0024556 0 ustar 00root root 0000000 0000000 {
"throws": "Argument name clash in strict mode (1:14)"
} babylon-6.18.0/test/fixtures/core/uncategorised/515/ 0000775 0000000 0000000 00000000000 13144646270 0022171 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/515/actual.js 0000664 0000000 0000000 00000000042 13144646270 0023774 0 ustar 00root root 0000000 0000000 function a(eval) { "use strict"; } babylon-6.18.0/test/fixtures/core/uncategorised/515/options.json 0000664 0000000 0000000 00000000100 13144646270 0024546 0 ustar 00root root 0000000 0000000 {
"throws": "eval is a reserved word in strict mode (1:11)"
}
babylon-6.18.0/test/fixtures/core/uncategorised/516/ 0000775 0000000 0000000 00000000000 13144646270 0022172 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/516/actual.js 0000664 0000000 0000000 00000000045 13144646270 0024000 0 ustar 00root root 0000000 0000000 function a(package) { "use strict"; } babylon-6.18.0/test/fixtures/core/uncategorised/516/options.json 0000664 0000000 0000000 00000000103 13144646270 0024552 0 ustar 00root root 0000000 0000000 {
"throws": "package is a reserved word in strict mode (1:11)"
}
babylon-6.18.0/test/fixtures/core/uncategorised/517/ 0000775 0000000 0000000 00000000000 13144646270 0022173 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/517/actual.js 0000664 0000000 0000000 00000000064 13144646270 0024002 0 ustar 00root root 0000000 0000000 function a() { "use strict"; function b(t, t) { }; } babylon-6.18.0/test/fixtures/core/uncategorised/517/options.json 0000664 0000000 0000000 00000000073 13144646270 0024561 0 ustar 00root root 0000000 0000000 {
"throws": "Argument name clash in strict mode (1:43)"
} babylon-6.18.0/test/fixtures/core/uncategorised/518/ 0000775 0000000 0000000 00000000000 13144646270 0022174 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/518/actual.js 0000664 0000000 0000000 00000000044 13144646270 0024001 0 ustar 00root root 0000000 0000000 (function a(t, t) { "use strict"; }) babylon-6.18.0/test/fixtures/core/uncategorised/518/options.json 0000664 0000000 0000000 00000000073 13144646270 0024562 0 ustar 00root root 0000000 0000000 {
"throws": "Argument name clash in strict mode (1:15)"
} babylon-6.18.0/test/fixtures/core/uncategorised/519/ 0000775 0000000 0000000 00000000000 13144646270 0022175 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/519/actual.js 0000664 0000000 0000000 00000000066 13144646270 0024006 0 ustar 00root root 0000000 0000000 function a() { "use strict"; (function b(t, t) { }); } babylon-6.18.0/test/fixtures/core/uncategorised/519/options.json 0000664 0000000 0000000 00000000073 13144646270 0024563 0 ustar 00root root 0000000 0000000 {
"throws": "Argument name clash in strict mode (1:44)"
} babylon-6.18.0/test/fixtures/core/uncategorised/52/ 0000775 0000000 0000000 00000000000 13144646270 0022105 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/52/actual.js 0000664 0000000 0000000 00000000012 13144646270 0023705 0 ustar 00root root 0000000 0000000 /*a
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"type": "File",
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"loc": {
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}
},
"program": {
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"loc": {
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},
"end": {
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}
},
"sourceType": "script",
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{
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} babylon-6.18.0/test/fixtures/core/uncategorised/520/ 0000775 0000000 0000000 00000000000 13144646270 0022165 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/520/actual.js 0000664 0000000 0000000 00000000044 13144646270 0023772 0 ustar 00root root 0000000 0000000 (function a(eval) { "use strict"; }) babylon-6.18.0/test/fixtures/core/uncategorised/520/options.json 0000664 0000000 0000000 00000000100 13144646270 0024542 0 ustar 00root root 0000000 0000000 {
"throws": "eval is a reserved word in strict mode (1:12)"
}
babylon-6.18.0/test/fixtures/core/uncategorised/521/ 0000775 0000000 0000000 00000000000 13144646270 0022166 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/521/actual.js 0000664 0000000 0000000 00000000047 13144646270 0023776 0 ustar 00root root 0000000 0000000 (function a(package) { "use strict"; }) babylon-6.18.0/test/fixtures/core/uncategorised/521/options.json 0000664 0000000 0000000 00000000103 13144646270 0024546 0 ustar 00root root 0000000 0000000 {
"throws": "package is a reserved word in strict mode (1:12)"
}
babylon-6.18.0/test/fixtures/core/uncategorised/522/ 0000775 0000000 0000000 00000000000 13144646270 0022167 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/522/actual.js 0000664 0000000 0000000 00000000105 13144646270 0023772 0 ustar 00root root 0000000 0000000 "use strict";function foo(){"use strict";}function bar(){var v = 015} babylon-6.18.0/test/fixtures/core/uncategorised/522/options.json 0000664 0000000 0000000 00000000047 13144646270 0024556 0 ustar 00root root 0000000 0000000 {
"throws": "Invalid number (1:65)"
} babylon-6.18.0/test/fixtures/core/uncategorised/523/ 0000775 0000000 0000000 00000000000 13144646270 0022170 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/523/actual.js 0000664 0000000 0000000 00000000016 13144646270 0023774 0 ustar 00root root 0000000 0000000 var this = 10; babylon-6.18.0/test/fixtures/core/uncategorised/523/options.json 0000664 0000000 0000000 00000000050 13144646270 0024551 0 ustar 00root root 0000000 0000000 {
"throws": "Unexpected token (1:4)"
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10; babylon-6.18.0/test/fixtures/core/uncategorised/524/options.json 0000664 0000000 0000000 00000000063 13144646270 0024556 0 ustar 00root root 0000000 0000000 {
"throws": "Illegal newline after throw (1:5)"
} babylon-6.18.0/test/fixtures/core/uncategorised/525/ 0000775 0000000 0000000 00000000000 13144646270 0022172 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/525/actual.js 0000664 0000000 0000000 00000000005 13144646270 0023774 0 ustar 00root root 0000000 0000000 let x babylon-6.18.0/test/fixtures/core/uncategorised/525/expected.json 0000664 0000000 0000000 00000003002 13144646270 0024661 0 ustar 00root root 0000000 0000000 {
"type": "File",
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"end": 5,
"loc": {
"start": {
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},
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}
},
"program": {
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"end": 5,
"loc": {
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},
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}
},
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"loc": {
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},
"end": {
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}
},
"declarations": [
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"end": 5,
"loc": {
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},
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}
},
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"loc": {
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},
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}
} babylon-6.18.0/test/fixtures/core/uncategorised/526/ 0000775 0000000 0000000 00000000000 13144646270 0022173 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/526/actual.js 0000664 0000000 0000000 00000000011 13144646270 0023772 0 ustar 00root root 0000000 0000000 let x, y; babylon-6.18.0/test/fixtures/core/uncategorised/526/expected.json 0000664 0000000 0000000 00000004371 13144646270 0024674 0 ustar 00root root 0000000 0000000 {
"type": "File",
"start": 0,
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"loc": {
"start": {
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},
"end": {
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}
},
"program": {
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"loc": {
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},
"end": {
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}
},
"sourceType": "script",
"body": [
{
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"start": 0,
"end": 9,
"loc": {
"start": {
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},
"end": {
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}
},
"declarations": [
{
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"end": 5,
"loc": {
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},
"end": {
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}
},
"id": {
"type": "Identifier",
"start": 4,
"end": 5,
"loc": {
"start": {
"line": 1,
"column": 4
},
"end": {
"line": 1,
"column": 5
}
},
"name": "x"
},
"init": null
},
{
"type": "VariableDeclarator",
"start": 7,
"end": 8,
"loc": {
"start": {
"line": 1,
"column": 7
},
"end": {
"line": 1,
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}
},
"id": {
"type": "Identifier",
"start": 7,
"end": 8,
"loc": {
"start": {
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"column": 7
},
"end": {
"line": 1,
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}
},
"name": "y"
},
"init": null
}
],
"kind": "let"
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}
} babylon-6.18.0/test/fixtures/core/uncategorised/527/ 0000775 0000000 0000000 00000000000 13144646270 0022174 5 ustar 00root root 0000000 0000000 babylon-6.18.0/test/fixtures/core/uncategorised/527/actual.js 0000664 0000000 0000000 00000000012 13144646270 0023774 0 ustar 00root root 0000000 0000000 let x = 42 babylon-6.18.0/test/fixtures/core/uncategorised/527/expected.json 0000664 0000000 0000000 00000003776 13144646270 0024705 0 ustar 00root root 0000000 0000000 {
"type": "File",
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"end": 10,
"loc": {
"start": {
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},
"program": {
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},
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}
},
"sourceType": "script",
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{
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"end": 10,
"loc": {
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},
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