rewrite member expressions correctly

src/Bundle/index.js

@@ -28,13 +28,6 @@ export default class Bundle {
 		this.externalModules = [];
 	}
 
-	collect () {
-		return this.build()
-			.then( () => {
-				return this;
-			});
-	}
-
 	fetchModule ( path ) {
 		if ( !has( this.modulePromises, path ) ) {
 			this.modulePromises[ path ] = readFile( path, { encoding: 'utf-8' })

src/rollup.js

@@ -11,7 +11,7 @@ export function rollup ( entry, options = {} ) {
 		base: options.base || process.cwd()
 	});
 
-	return bundle.collect().then( () => {
+	return bundle.build().then( () => {
 		return {
 			generate: options => bundle.generate( options ),
 			write: ( dest, options ) => {

src/utils/replaceIdentifiers.js

@@ -29,16 +29,21 @@ export default function replaceIdentifiers ( statement, snippet, names ) {
 					return this.skip();
 				}
 
+				names = newNames;
 				replacementStack.push( newNames );
 			}
 
-			if ( node.type === 'Identifier' && parent.type !== 'MemberExpression' ) {
+			// We want to rewrite identifiers (that aren't property names)
+			if ( node.type !== 'Identifier' ) return;
+			if ( parent.type === 'MemberExpression' && node !== parent.object ) return;
+			if ( parent.type === 'Property' && node !== parent.value ) return;
+			// TODO others...?
+
 			const name = has( names, node.name ) && names[ node.name ];
 
 			if ( name && name !== node.name ) {
 				snippet.overwrite( node.start, node.end, name );
 			}
-			}
 		},
 
 		leave ( node ) {

test/samples/rewrite-member-expressions/_config.js

@@ -0,0 +1,3 @@
+module.exports = {
+	description: 'rewrites identifiers at the head of member expressions'
+};

test/samples/rewrite-member-expressions/getLengthOfOtherQueue.js

@@ -0,0 +1,5 @@
+export default function getLengthOfOtherQueue () {
+	return queue.length;
+}
+
+var queue = new Array( 1000 );

test/samples/rewrite-member-expressions/main.js

@@ -0,0 +1,7 @@
+import { addToQueue, getQueueItem } from './mainQueue';
+import getLengthOfOtherQueue from './getLengthOfOtherQueue';
+
+addToQueue( 42 );
+
+assert.equal( getQueueItem( 0 ), 42 );
+assert.equal( getLengthOfOtherQueue(), 1000 );

test/samples/rewrite-member-expressions/mainQueue.js

@@ -0,0 +1,9 @@
+var queue = [];
+
+export function addToQueue ( x ) {
+	queue.push( x );
+}
+
+export function getQueueItem ( i ) {
+	return queue[i];
+}