/* | |
MIT License http://www.opensource.org/licenses/mit-license.php | |
Author Tobias Koppers @sokra | |
*/ | |
"use strict"; | |
const concord = require("./concord"); | |
const DescriptionFileUtils = require("./DescriptionFileUtils"); | |
const getInnerRequest = require("./getInnerRequest"); | |
module.exports = class ConcordModulesPlugin { | |
constructor(source, options, target) { | |
this.source = source; | |
this.options = options; | |
this.target = target; | |
} | |
apply(resolver) { | |
const target = resolver.ensureHook(this.target); | |
resolver.getHook(this.source).tapAsync("ConcordModulesPlugin", (request, resolveContext, callback) => { | |
const innerRequest = getInnerRequest(resolver, request); | |
if(!innerRequest) return callback(); | |
const concordField = DescriptionFileUtils.getField(request.descriptionFileData, "concord"); | |
if(!concordField) return callback(); | |
const data = concord.matchModule(request.context, concordField, innerRequest); | |
if(data === innerRequest) return callback(); | |
if(data === undefined) return callback(); | |
if(data === false) { | |
const ignoreObj = Object.assign({}, request, { | |
path: false | |
}); | |
return callback(null, ignoreObj); | |
} | |
const obj = Object.assign({}, request, { | |
path: request.descriptionFileRoot, | |
request: data | |
}); | |
resolver.doResolve(target, obj, "aliased from description file " + request.descriptionFilePath + " with mapping '" + innerRequest + "' to '" + data + "'", resolveContext, (err, result) => { | |
if(err) return callback(err); | |
// Don't allow other aliasing or raw request | |
if(result === undefined) return callback(null, null); | |
callback(null, result); | |
}); | |
}); | |
} | |
}; |