update

node_modules/enhanced-resolve/lib/DescriptionFilePlugin.js

@@ -0,0 +1,76 @@
+/*
+MIT License http://www.opensource.org/licenses/mit-license.php
+Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const DescriptionFileUtils = require("./DescriptionFileUtils");
+
+module.exports = class DescriptionFilePlugin {
+	constructor(source, filenames, target) {
+		this.source = source;
+		this.filenames = [].concat(filenames);
+		this.target = target;
+	}
+
+	apply(resolver) {
+		const target = resolver.ensureHook(this.target);
+		resolver
+			.getHook(this.source)
+			.tapAsync(
+				"DescriptionFilePlugin",
+				(request, resolveContext, callback) => {
+					const directory = request.path;
+					DescriptionFileUtils.loadDescriptionFile(
+						resolver,
+						directory,
+						this.filenames,
+						resolveContext,
+						(err, result) => {
+							if (err) return callback(err);
+							if (!result) {
+								if (resolveContext.missing) {
+									this.filenames.forEach(filename => {
+										resolveContext.missing.add(
+											resolver.join(directory, filename)
+										);
+									});
+								}
+								if (resolveContext.log)
+									resolveContext.log("No description file found");
+								return callback();
+							}
+							const relativePath =
+								"." +
+								request.path
+									.substr(result.directory.length)
+									.replace(/\\/g, "/");
+							const obj = Object.assign({}, request, {
+								descriptionFilePath: result.path,
+								descriptionFileData: result.content,
+								descriptionFileRoot: result.directory,
+								relativePath: relativePath
+							});
+							resolver.doResolve(
+								target,
+								obj,
+								"using description file: " +
+									result.path +
+									" (relative path: " +
+									relativePath +
+									")",
+								resolveContext,
+								(err, result) => {
+									if (err) return callback(err);
+
+									// Don't allow other processing
+									if (result === undefined) return callback(null, null);
+									callback(null, result);
+								}
+							);
+						}
+					);
+				}
+			);
+	}
+};