Revert breaking change

Author: RadValentin

index.js

@@ -6,24 +6,23 @@ module.exports = function postcssPrefixSelector(options) {
     ? [].concat(options.includeFiles)
     : [];
 
-  return {
-    postcssPlugin: 'postcss-prefix-selector',
-    Rule(rule) {
-      if (
-        ignoreFiles.length &&
-        rule.source.input.file &&
-        isFileInArray(rule.source.input.file, ignoreFiles)
-      ) {
-        return;
-      }
-      if (
-        includeFiles.length &&
-        rule.source.input.file &&
-        !isFileInArray(rule.source.input.file, includeFiles)
-      ) {
-        return;
-      }
+  return function (root) {
+    if (
+      ignoreFiles.length &&
+      root.source.input.file &&
+      isFileInArray(root.source.input.file, ignoreFiles)
+    ) {
+      return;
+    }
+    if (
+      includeFiles.length &&
+      root.source.input.file &&
+      !isFileInArray(root.source.input.file, includeFiles)
+    ) {
+      return;
+    }
 
+    root.walkRules((rule) => {
       const keyframeRules = [
         'keyframes',
         '-webkit-keyframes',
@@ -50,7 +49,7 @@ module.exports = function postcssPrefixSelector(options) {
 
         return prefixWithSpace + selector;
       });
-    },
+    });
   };
 };
 

test/test.js

@@ -287,16 +287,16 @@ it('should prefix a selector. Use ".hello .world"', () => {
   assert.equal(out, expected);
 });
 
-it('should prefix postcss nested selectors', () => {
-  const out = postcss()
-    .use(postcssNested)
-    .use(prefixer({ prefix: '.stuff' }))
-    .process(getFixtureContents('nested-selectors.postcss')).css;
+// it('should prefix postcss nested selectors', () => {
+//   const out = postcss()
+//     .use(postcssNested)
+//     .use(prefixer({ prefix: '.stuff' }))
+//     .process(getFixtureContents('nested-selectors.postcss')).css;
 
-  const expected = getFixtureContents('nested-selectors.expected.css');
+//   const expected = getFixtureContents('nested-selectors.expected.css');
 
-  assert.equal(out, expected);
-});
+//   assert.equal(out, expected);
+// });
 
 function getFixtureContents(name) {
   return fs.readFileSync(`test/fixtures/${name}`, 'utf8').trim();