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4 years ago
/*
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 forEachBail = require("./forEachBail");
module.exports = class ConcordExtensionsPlugin {
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(
"ConcordExtensionsPlugin",
(request, resolveContext, callback) => {
const concordField = DescriptionFileUtils.getField(
request.descriptionFileData,
"concord"
);
if (!concordField) return callback();
const extensions = concord.getExtensions(
request.context,
concordField
);
if (!extensions) return callback();
forEachBail(
extensions,
(appending, callback) => {
const obj = Object.assign({}, request, {
path: request.path + appending,
relativePath:
request.relativePath && request.relativePath + appending
});
resolver.doResolve(
target,
obj,
"concord extension: " + appending,
resolveContext,
callback
);
},
(err, result) => {
if (err) return callback(err);
// Don't allow other processing
if (result === undefined) return callback(null, null);
callback(null, result);
}
);
}
);
}
};