Move transform into its own function

Author: jonathantneal

plugins/postcss-nesting/index.js

@@ -1,28 +1,10 @@
 'use strict';
 
 // tooling
-const postcss                 = require('postcss');
-const transformBubblingAtrule = require('./lib/transform-bubbling-atrule');
-const transformNestingAtRule  = require('./lib/transform-nesting-atrule');
-const transformNestingRule    = require('./lib/transform-nesting-rule');
+const postcss   = require('postcss');
+const transform = require('./lib/transform');
 
 // plugin
 module.exports = postcss.plugin('postcss-nesting', () => {
 	return (root) => root.walk(transform);
 });
-
-function transform(node) {
-	// console.log('walk', [node.type], [node.name || node.selector || node.prop || 'root'], node.nodes ? `length: ${node.nodes.length}` : `value: "${node.value}"`);
-
-	if (transformBubblingAtrule.test(node)) {
-		// conditionally transform a bubbling atrule
-		transformBubblingAtrule(node);
-	} else if (transformNestingAtRule.test(node)) {
-		// conditionally transform a nesting atrule
-		node = transformNestingAtRule(node); // eslint-disable-line no-param-reassign
-	} else if (transformNestingRule.test(node)) {
-		// conditionally transform a nesting rule
-		transformNestingRule(node);
-	}
-
-}

plugins/postcss-nesting/lib/transform.js

@@ -0,0 +1,18 @@
+// tooling
+const transformBubblingAtrule = require('./transform-bubbling-atrule');
+const transformNestingAtRule  = require('./transform-nesting-atrule');
+const transformNestingRule    = require('./transform-nesting-rule');
+
+// conditionally transform a nesting rule
+module.exports = (node) => {
+	if (transformBubblingAtrule.test(node)) {
+		// conditionally transform a bubbling atrule
+		transformBubblingAtrule(node);
+	} else if (transformNestingAtRule.test(node)) {
+		// conditionally transform a nesting atrule
+		transformNestingAtRule(node);
+	} else if (transformNestingRule.test(node)) {
+		// conditionally transform a nesting rule
+		transformNestingRule(node);
+	}
+};