package/package.json000644 000766 000024 0000001735 13120160066013017 0ustar00000000 000000 { "name": "require_optional", "version": "1.0.1", "description": "Allows you declare optionalPeerDependencies that can be satisfied by the top level module but ignored if they are not.", "main": "index.js", "scripts": { "test": "mocha" }, "repository": { "type": "git", "url": "https://github.com/christkv/require_optional.git" }, "keywords": [ "optional", "require", "optionalPeerDependencies" ], "author": "Christian Kvalheim Amor", "license": "Apache-2.0", "bugs": { "url": "https://github.com/christkv/require_optional/issues" }, "homepage": "https://github.com/christkv/require_optional", "dependencies": { "semver": "^5.1.0", "resolve-from": "^2.0.0" }, "devDependencies": { "bson": "0.4.21", "co": "4.6.0", "es6-promise": "^3.0.2", "mocha": "^2.4.5" }, "peerOptionalDependencies": { "co": ">=5.6.0", "es6-promise": "^3.0.2", "es6-promise2": "^4.0.2", "bson": "0.4.21" } } package/.npmignore000644 000766 000024 0000001021 12654357302012530 0ustar00000000 000000 # Logs logs *.log npm-debug.log* # Runtime data pids *.pid *.seed # Directory for instrumented libs generated by jscoverage/JSCover lib-cov # Coverage directory used by tools like istanbul coverage # Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files) .grunt # node-waf configuration .lock-wscript # Compiled binary addons (http://nodejs.org/api/addons.html) build/Release # Dependency directory node_modules # Optional npm cache directory .npm # Optional REPL history .node_repl_history package/README.md000644 000766 000024 0000000245 12654357302012017 0ustar00000000 000000 # require_optional Work around the problem that we do not have a optionalPeerDependencies concept in node.js making it a hassle to optionally include native modules package/LICENSE000644 000766 000024 0000026135 12654357302011553 0ustar00000000 000000 Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. 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See the License for the specific language governing permissions and limitations under the License. package/index.js000644 000766 000024 0000007613 13120160143012173 0ustar00000000 000000 var path = require('path'), fs = require('fs'), f = require('util').format, resolveFrom = require('resolve-from'), semver = require('semver'); var exists = fs.existsSync || path.existsSync; // Find the location of a package.json file near or above the given location var find_package_json = function(location) { var found = false; while(!found) { if (exists(location + '/package.json')) { found = location; } else if (location !== '/') { location = path.dirname(location); } else { return false; } } return location; } // Find the package.json object of the module closest up the module call tree that contains name in that module's peerOptionalDependencies var find_package_json_with_name = function(name) { // Walk up the module call tree until we find a module containing name in its peerOptionalDependencies var currentModule = module; var found = false; while (currentModule) { // Check currentModule has a package.json location = currentModule.filename; var location = find_package_json(location) if (!location) { currentModule = currentModule.parent; continue; } // Read the package.json file var object = JSON.parse(fs.readFileSync(f('%s/package.json', location))); // Is the name defined by interal file references var parts = name.split(/\//); // Check whether this package.json contains peerOptionalDependencies containing the name we're searching for if (!object.peerOptionalDependencies || (object.peerOptionalDependencies && !object.peerOptionalDependencies[parts[0]])) { currentModule = currentModule.parent; continue; } found = true; break; } // Check whether name has been found in currentModule's peerOptionalDependencies if (!found) { throw new Error(f('no optional dependency [%s] defined in peerOptionalDependencies in any package.json', parts[0])); } return { object: object, parts: parts } } var require_optional = function(name, options) { options = options || {}; options.strict = typeof options.strict == 'boolean' ? options.strict : true; var res = find_package_json_with_name(name) var object = res.object; var parts = res.parts; // Unpack the expected version var expectedVersions = object.peerOptionalDependencies[parts[0]]; // The resolved package var moduleEntry = undefined; // Module file var moduleEntryFile = name; try { // Validate if it's possible to read the module moduleEntry = require(moduleEntryFile); } catch(err) { // Attempt to resolve in top level package try { // Get the module entry file moduleEntryFile = resolveFrom(process.cwd(), name); if(moduleEntryFile == null) return undefined; // Attempt to resolve the module moduleEntry = require(moduleEntryFile); } catch(err) { if(err.code === 'MODULE_NOT_FOUND') return undefined; } } // Resolve the location of the module's package.json file var location = find_package_json(require.resolve(moduleEntryFile)); if(!location) { throw new Error('package.json can not be located'); } // Read the module file var dependentOnModule = JSON.parse(fs.readFileSync(f('%s/package.json', location))); // Get the version var version = dependentOnModule.version; // Validate if the found module satisfies the version id if(semver.satisfies(version, expectedVersions) == false && options.strict) { var error = new Error(f('optional dependency [%s] found but version [%s] did not satisfy constraint [%s]', parts[0], version, expectedVersions)); error.code = 'OPTIONAL_MODULE_NOT_FOUND'; throw error; } // Satifies the module requirement return moduleEntry; } require_optional.exists = function(name) { try { var m = require_optional(name); if(m === undefined) return false; return true; } catch(err) { return false; } } module.exports = require_optional; package/.travis.yml000644 000766 000024 0000000135 13120014741012631 0ustar00000000 000000 language: node_js node_js: - "0.10" - "0.12" - "4" - "6" - "7" - "8" sudo: false package/HISTORY.md000644 000766 000024 0000000544 13120160373012212 0ustar00000000 000000 1.0.1 03-02-2016 ================ * Fix dependency resolution issue when a component in peerOptionalDependencies is installed at the level of the module declaring in peerOptionalDependencies. 1.0.0 03-02-2016 ================ * Initial release allowing us to optionally resolve dependencies in the package.json file under the peerOptionalDependencies tag.package/test/require_optional_tests.js000644 000766 000024 0000004057 13120160143016645 0ustar00000000 000000 var assert = require('assert'), require_optional = require('../'), nestedTest = require('./nestedTest'); describe('Require Optional', function() { describe('top level require', function() { it('should correctly require co library', function() { var promise = require_optional('es6-promise'); assert.ok(promise); }); it('should fail to require es6-promise library', function() { try { require_optional('co'); } catch(e) { assert.equal('OPTIONAL_MODULE_NOT_FOUND', e.code); return; } assert.ok(false); }); it('should ignore optional library not defined', function() { assert.equal(undefined, require_optional('es6-promise2')); }); }); describe('internal module file require', function() { it('should correctly require co library', function() { var Long = require_optional('bson/lib/bson/long.js'); assert.ok(Long); }); }); describe('top level resolve', function() { it('should correctly use exists method', function() { assert.equal(false, require_optional.exists('co')); assert.equal(true, require_optional.exists('es6-promise')); assert.equal(true, require_optional.exists('bson/lib/bson/long.js')); assert.equal(false, require_optional.exists('es6-promise2')); }); }); describe('require_optional inside dependencies', function() { it('should correctly walk up module call stack searching for peerOptionalDependencies', function() { assert.ok(nestedTest.findPackage('bson')) }); it('should return null when a package is defined in top-level package.json but not installed', function() { assert.equal(null, nestedTest.findPackage('es6-promise2')) }); it('should error when searching for an optional dependency that is not defined in any ancestor package.json', function() { try { nestedTest.findPackage('bison') } catch (err) { assert.equal(err.message, 'no optional dependency [bison] defined in peerOptionalDependencies in any package.json') } }) }); }); package/test/nestedTest/package.json000644 000766 000024 0000000514 13120160143016106 0ustar00000000 000000 { "name": "nestedtest", "version": "1.0.0", "description": "A dummy package that facilitates testing that require_optional correctly walks up the module call stack", "main": "index.js", "scripts": { "test": "echo \"Error: no test specified\" && exit 1" }, "author": "Sebastian Hallum Clarke", "license": "ISC" } package/test/nestedTest/index.js000644 000766 000024 0000000263 13120160143015266 0ustar00000000 000000 var require_optional = require('../../') function findPackage(packageName) { var pkg = require_optional(packageName); return pkg; } module.exports.findPackage = findPackage