fix misnamed exports of default imports in ES bundles (#513)

src/finalisers/es6.js

@@ -47,10 +47,11 @@ export default function es6 ( bundle, magicString ) {
 
 	const specifiers = module.getExports().filter( notDefault ).map( name => {
 		const declaration = module.traceExport( name );
+		const rendered = declaration.render( true );
 
-		return declaration.name === name ?
+		return rendered === name ?
 			name :
-			`${declaration.name} as ${name}`;
+			`${rendered} as ${name}`;
 	});
 
 	let exportBlock = specifiers.length ? `export { ${specifiers.join(', ')} };` : '';

test/form/export-default-import/_config.js

@@ -0,0 +1,6 @@
+module.exports = {
+	description: 'correctly exports a default import, even in ES mode (#513)',
+	options: {
+		moduleName: 'myBundle'
+	}
+};

test/form/export-default-import/_expected/amd.js

@@ -0,0 +1,9 @@
+define(['exports', 'x'], function (exports, x) { 'use strict';
+
+	x = 'default' in x ? x['default'] : x;
+
+
+
+	exports.x = x;
+
+});

test/form/export-default-import/_expected/cjs.js

@@ -0,0 +1,9 @@
+'use strict';
+
+function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
+
+var x = _interopDefault(require('x'));
+
+
+
+exports.x = x;

test/form/export-default-import/_expected/es6.js

@@ -0,0 +1,5 @@
+import x from 'x';
+
+
+
+export { x };

test/form/export-default-import/_expected/iife.js

@@ -0,0 +1,10 @@
+(function (exports,x) {
+	'use strict';
+
+	x = 'default' in x ? x['default'] : x;
+
+
+
+	exports.x = x;
+
+}((this.myBundle = this.myBundle || {}),x));

test/form/export-default-import/_expected/umd.js

@@ -0,0 +1,13 @@
+(function (global, factory) {
+	typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('x')) :
+	typeof define === 'function' && define.amd ? define(['exports', 'x'], factory) :
+	(factory((global.myBundle = global.myBundle || {}),global.x));
+}(this, function (exports,x) { 'use strict';
+
+	x = 'default' in x ? x['default'] : x;
+
+
+
+	exports.x = x;
+
+}));

test/form/export-default-import/main.js

@@ -0,0 +1,3 @@
+import x from 'x';
+
+export { x };