feat(url): add url() filter support (options.url)

Author: michael-ciniawsky

README.md

@@ -74,6 +74,7 @@ export default `
   }
 `
 ```
+
 #### `{Boolean}`
 
 To disable `url()` resolving by `css-loader` set the option to `false`
@@ -88,6 +89,32 @@ To disable `url()` resolving by `css-loader` set the option to `false`
 }
 ```
 
+#### `{RegExp}`
+
+**webpack.config.js**
+```js
+{
+  loader: 'css-loader',
+  options: {
+    url: /filter/
+  }
+}
+```
+
+#### `{Function}`
+
+**webpack.config.js**
+```js
+{
+  loader: 'css-loader',
+  options: {
+    url (url) {
+      return /filter/.test(url)
+    }
+  }
+}
+```
+
 ### `import`
 
 ```css

src/index.js

@@ -52,7 +52,7 @@ export default function loader (css, map, meta) {
 
   // URL Plugin
   if (options.url) {
-    plugins.push(urls());
+    plugins.push(urls(options));
   }
 
 

src/lib/Error.js

@@ -2,7 +2,12 @@
   "type": "object",
   "properties": {
     "url": {
-      "type": "boolean"
+      "anyOf": [
+        { "type": "string" },
+        { "type": "boolean" },
+        { "instanceof": "RegExp" },
+        { "instanceof": "Function" }
+      ]
     },
     "import": {
       "type": "boolean"