93 lines
		
	
	
		
			2.3 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
		
		
			
		
	
	
			93 lines
		
	
	
		
			2.3 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
|  | 'use strict'; | ||
|  | 
 | ||
|  | Object.defineProperty(exports, '__esModule', { | ||
|  |   value: true | ||
|  | }); | ||
|  | exports.default = nodeModulesPaths; | ||
|  | 
 | ||
|  | function _path() { | ||
|  |   const data = _interopRequireDefault(require('path')); | ||
|  | 
 | ||
|  |   _path = function _path() { | ||
|  |     return data; | ||
|  |   }; | ||
|  | 
 | ||
|  |   return data; | ||
|  | } | ||
|  | 
 | ||
|  | function _realpathNative() { | ||
|  |   const data = require('realpath-native'); | ||
|  | 
 | ||
|  |   _realpathNative = function _realpathNative() { | ||
|  |     return data; | ||
|  |   }; | ||
|  | 
 | ||
|  |   return data; | ||
|  | } | ||
|  | 
 | ||
|  | function _interopRequireDefault(obj) { | ||
|  |   return obj && obj.__esModule ? obj : {default: obj}; | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved. | ||
|  |  * | ||
|  |  * This source code is licensed under the MIT license found in the | ||
|  |  * LICENSE file in the root directory of this source tree. | ||
|  |  * | ||
|  |  * Adapted from: https://github.com/substack/node-resolve
 | ||
|  |  */ | ||
|  | function nodeModulesPaths(basedir, options) { | ||
|  |   const modules = | ||
|  |     options && options.moduleDirectory | ||
|  |       ? Array.from(options.moduleDirectory) | ||
|  |       : ['node_modules']; // ensure that `basedir` is an absolute path at this point,
 | ||
|  |   // resolving against the process' current working directory
 | ||
|  | 
 | ||
|  |   const basedirAbs = _path().default.resolve(basedir); | ||
|  | 
 | ||
|  |   let prefix = '/'; | ||
|  | 
 | ||
|  |   if (/^([A-Za-z]:)/.test(basedirAbs)) { | ||
|  |     prefix = ''; | ||
|  |   } else if (/^\\\\/.test(basedirAbs)) { | ||
|  |     prefix = '\\\\'; | ||
|  |   } // The node resolution algorithm (as implemented by NodeJS and TypeScript)
 | ||
|  |   // traverses parents of the physical path, not the symlinked path
 | ||
|  | 
 | ||
|  |   let physicalBasedir; | ||
|  | 
 | ||
|  |   try { | ||
|  |     physicalBasedir = (0, _realpathNative().sync)(basedirAbs); | ||
|  |   } catch (err) { | ||
|  |     // realpath can throw, e.g. on mapped drives
 | ||
|  |     physicalBasedir = basedirAbs; | ||
|  |   } | ||
|  | 
 | ||
|  |   const paths = [physicalBasedir]; | ||
|  | 
 | ||
|  |   let parsed = _path().default.parse(physicalBasedir); | ||
|  | 
 | ||
|  |   while (parsed.dir !== paths[paths.length - 1]) { | ||
|  |     paths.push(parsed.dir); | ||
|  |     parsed = _path().default.parse(parsed.dir); | ||
|  |   } | ||
|  | 
 | ||
|  |   const dirs = paths | ||
|  |     .reduce( | ||
|  |       (dirs, aPath) => | ||
|  |         dirs.concat( | ||
|  |           modules.map(moduleDir => | ||
|  |             _path().default.isAbsolute(moduleDir) | ||
|  |               ? aPath === basedirAbs | ||
|  |                 ? moduleDir | ||
|  |                 : '' | ||
|  |               : _path().default.join(prefix, aPath, moduleDir) | ||
|  |           ) | ||
|  |         ), | ||
|  |       [] | ||
|  |     ) | ||
|  |     .filter(dir => dir !== ''); | ||
|  |   return options.paths ? dirs.concat(options.paths) : dirs; | ||
|  | } |