'use strict'; var path = require('path'), fs = require('fs'); var loaderUtils = require('loader-utils'); var getContextDirectory = require('./utility/get-context-directory'); /** * Codec for relative paths with respect to the context directory. * @type {{name:string, decode: function}} */ module.exports = { name : 'npmModule', decode: decode }; /** * Decode the given uri. * Include only module paths containing `~`. * @this {{options: object}} A loader or compilation * @param {string} uri A source uri to decode * @returns {boolean|string} False where unmatched else the decoded path */ function decode(uri) { /* jshint validthis:true */ if (/~/.test(uri)) { var relative = loaderUtils.urlToRequest(uri), base = getContextDirectory.call(this), absFile = path.normalize(path.join(base, 'node_modules', relative)), isValid = !!absFile && fs.existsSync(absFile) && fs.statSync(absFile).isFile(); return isValid && absFile; } }