refactor: escape

Author: alexander-akait

lib/escape.js

@@ -0,0 +1,18 @@
+module.exports = function escape(url) {
+  if (typeof url !== "string") {
+    return url;
+  }
+
+  // If url is already wrapped in quotes, remove them
+  if (/^['"].*['"]$/.test(url)) {
+    url = url.slice(1, -1);
+  }
+
+  // Should url be wrapped?
+  // See https://drafts.csswg.org/css-values-3/#urls
+  if (/["'() \t\n]/.test(url)) {
+    return '"' + url.replace(/"/g, '\\"').replace(/\n/g, "\\n") + '"';
+  }
+
+  return url;
+};

lib/loader.js

@@ -116,7 +116,7 @@ module.exports = function(content, map) {
           "var escape = require(" +
           loaderUtils.stringifyRequest(
             loaderContext,
-            require.resolve("./url/escape.js")
+            require.resolve("./escape.js")
           ) +
           ");\n";
 

lib/url/escape.js

@@ -11,8 +11,8 @@ function getEvaluated(output, modules) {
 		fn(m, m.exports, function(module) {
 			if(module.indexOf("runtime") >= 0)
 				return require("../lib/runtime");
-			if(module.indexOf("url/escape") >= 0)
-				return require("../lib/url/escape");
+			if(module.indexOf("escape") >= 0)
+				return require("../lib/escape");
 			if(module.indexOf("-!/path/css-loader!") === 0)
 				module = module.substr(19);
 			if(modules && module in modules)