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sourceRevisionAtLastExport: 33f2fb0e53d135f0ee17cfccd9d993eb2a6f47de targetRevisionAtLastExport: 31340cbd9add103f586d501b0c3354b7b182abc0
45 lines
1.5 KiB
JavaScript
45 lines
1.5 KiB
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// MODULE
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// Flags: --harmony-import-meta
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import foreign, { url as otherUrl } from './modules-skip-export-import-meta.js';
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assertEquals("object", typeof import.meta);
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assertEquals(null, Object.getPrototypeOf(import.meta));
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assertSame(import.meta, import.meta);
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const loadImportMetaArrow = () => import.meta;
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assertSame(loadImportMetaArrow(), import.meta);
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function loadImportMetaFn() {
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try {
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throw new Error('force catch code path for nested context');
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} catch (e) {
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return import.meta;
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}
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}
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loadImportMetaFn();
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assertSame(loadImportMetaFn(), import.meta);
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// This property isn't part of the spec itself but is mentioned as an example
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assertMatches(/\/modules-import-meta\.js$/, import.meta.url);
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import.meta.x = 42;
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assertEquals(42, import.meta.x);
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Object.assign(import.meta, { foo: "bar" })
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assertEquals("bar", import.meta.foo);
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// PerformEval parses its argument for the goal symbol Script. So the following
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// should fail just as it does for every other Script context.
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//
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// See:
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// https://github.com/tc39/proposal-import-meta/issues/7#issuecomment-329363083
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assertThrows(() => eval('import.meta'), SyntaxError);
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assertThrows(() => new Function('return import.meta;'), SyntaxError);
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assertNotEquals(foreign, import.meta);
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assertMatches(/\/modules-skip-export-import-meta\.js$/, foreign.url);
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assertEquals(foreign.url, otherUrl);
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