1 files changed, 49 insertions, 0 deletions
diff --git a/node_modules/enhanced-resolve/lib/UnsafeCachePlugin.js b/node_modules/enhanced-resolve/lib/UnsafeCachePlugin.js
new file mode 100644
index 0000000..e2c44d0
--- /dev/null
+++ b/node_modules/enhanced-resolve/lib/UnsafeCachePlugin.js
@@ -0,0 +1,49 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+function getCacheId(request, withContext) {
+	return JSON.stringify({
+		context: withContext ? request.context : "",
+		path: request.path,
+		query: request.query,
+		request: request.request
+	});
+}
+
+module.exports = class UnsafeCachePlugin {
+	constructor(source, filterPredicate, cache, withContext, target) {
+		this.source = source;
+		this.filterPredicate = filterPredicate;
+		this.withContext = withContext;
+		this.cache = cache || {};
+		this.target = target;
+	}
+
+	apply(resolver) {
+		const target = resolver.ensureHook(this.target);
+		resolver
+			.getHook(this.source)
+			.tapAsync("UnsafeCachePlugin", (request, resolveContext, callback) => {
+				if (!this.filterPredicate(request)) return callback();
+				const cacheId = getCacheId(request, this.withContext);
+				const cacheEntry = this.cache[cacheId];
+				if (cacheEntry) {
+					return callback(null, cacheEntry);
+				}
+				resolver.doResolve(
+					target,
+					request,
+					null,
+					resolveContext,
+					(err, result) => {
+						if (err) return callback(err);
+						if (result) return callback(null, (this.cache[cacheId] = result));
+						callback();
+					}
+				);
+			});
+	}
+};