1 files changed, 49 insertions, 0 deletions
diff --git a/node_modules/enhanced-resolve/lib/SymlinkPlugin.js b/node_modules/enhanced-resolve/lib/SymlinkPlugin.js
new file mode 100644
index 00000000..4aae688f
--- /dev/null
+++ b/node_modules/enhanced-resolve/lib/SymlinkPlugin.js
@@ -0,0 +1,49 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const getPaths = require("./getPaths");
+const forEachBail = require("./forEachBail");
+
+module.exports = class SymlinkPlugin {
+	constructor(source, target) {
+		this.source = source;
+		this.target = target;
+	}
+
+	apply(resolver) {
+		const target = resolver.ensureHook(this.target);
+		const fs = resolver.fileSystem;
+		resolver.getHook(this.source).tapAsync("SymlinkPlugin", (request, resolveContext, callback) => {
+			const pathsResult = getPaths(request.path);
+			const pathSeqments = pathsResult.seqments;
+			const paths = pathsResult.paths;
+
+			let containsSymlink = false;
+			forEachBail.withIndex(paths, (path, idx, callback) => {
+				fs.readlink(path, (err, result) => {
+					if(!err && result) {
+						pathSeqments[idx] = result;
+						containsSymlink = true;
+						// Shortcut when absolute symlink found
+						if(/^(\/|[a-zA-Z]:($|\\))/.test(result))
+							return callback(null, idx);
+					}
+					callback();
+				});
+			}, (err, idx) => {
+				if(!containsSymlink) return callback();
+				const resultSeqments = typeof idx === "number" ? pathSeqments.slice(0, idx + 1) : pathSeqments.slice();
+				const result = resultSeqments.reverse().reduce((a, b) => {
+					return resolver.join(a, b);
+				});
+				const obj = Object.assign({}, request, {
+					path: result
+				});
+				resolver.doResolve(target, obj, "resolved symlink to " + result, resolveContext, callback);
+			});
+		});
+	}
+};