Vijay Menon
5c1c9c2381
Fix expectations where line number has changed. R=dgrove@google.com Review URL: https://chromereviews.googleplex.com/158257013
29 lines
1.0 KiB
JavaScript
29 lines
1.0 KiB
JavaScript
// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
|
|
// for details. All rights reserved. Use of this source code is governed by a
|
|
// BSD-style license that can be found in the LICENSE file.
|
|
|
|
// Feature test for harmony support, alert if not present.
|
|
(function () {
|
|
try {
|
|
var f = new Function(
|
|
'"use strict";'+
|
|
'class C {' +
|
|
'constructor(x) { this.x = x; };' +
|
|
// TODO(jmesserly): arrow functions on V8 don't have lexical this yet.
|
|
// https://code.google.com/p/v8/issues/detail?id=2700
|
|
'["foo"]() { var self = this; return x => self.x + x; };' +
|
|
'};' +
|
|
'return new C(42).foo()(100);');
|
|
if (f() == 142) return; // supported!
|
|
} catch (e) {
|
|
}
|
|
|
|
var message = 'This script needs EcmaScript 6 features ' +
|
|
'like `class` and `=>`. Please run in a browser with support, ' +
|
|
'for example: chrome --js-flags="--harmony-arrow-functions' +
|
|
' --harmony-classes --harmony-computed-property-names"';
|
|
console.error(message);
|
|
alert(message);
|
|
|
|
})();
|