WIP - add extractor, generate snippet_data

node_modules/enhanced-resolve/lib/ModulesInHierachicDirectoriesPlugin.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const forEachBail = require("./forEachBail");
+const getPaths = require("./getPaths");
+
+module.exports = class ModulesInHierachicDirectoriesPlugin {
+	constructor(source, directories, target) {
+		this.source = source;
+		this.directories = [].concat(directories);
+		this.target = target;
+	}
+
+	apply(resolver) {
+		const target = resolver.ensureHook(this.target);
+		resolver.getHook(this.source).tapAsync("ModulesInHierachicDirectoriesPlugin", (request, resolveContext, callback) => {
+			const fs = resolver.fileSystem;
+			const addrs = getPaths(request.path).paths.map(p => {
+				return this.directories.map(d => resolver.join(p, d));
+			}).reduce((array, p) => {
+				array.push.apply(array, p);
+				return array;
+			}, []);
+			forEachBail(addrs, (addr, callback) => {
+				fs.stat(addr, (err, stat) => {
+					if(!err && stat && stat.isDirectory()) {
+						const obj = Object.assign({}, request, {
+							path: addr,
+							request: "./" + request.request
+						});
+						const message = "looking for modules in " + addr;
+						return resolver.doResolve(target, obj, message, resolveContext, callback);
+					}
+					if(resolveContext.log) resolveContext.log(addr + " doesn't exist or is not a directory");
+					if(resolveContext.missing) resolveContext.missing.add(addr);
+					return callback();
+				});
+			}, callback);
+		});
+	}
+};