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- normal case with synchronous and asynchronous mapfn - a non-callable value is passed as mapfn - behaviour of various values of thisArg in strict and sloppy mode - mapfn result is awaited once per iteration - iterator is closed when mapfn throws
22 lines
664 B
JavaScript
22 lines
664 B
JavaScript
// Copyright (C) 2022 Igalia, S.L. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-array.fromasync
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description: If thisArg is an object, it's bound to mapfn as the this-value
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info: |
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6. If _mapping_ is *true*, then
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a. Let _mappedValue_ be Call(_mapfn_, _thisArg_, « _nextValue_, 𝔽(_k_) »).
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flags: [async]
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includes: [asyncHelpers.js]
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features: [Array.fromAsync]
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---*/
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asyncTest(async () => {
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const myThisValue = {};
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await Array.fromAsync([1, 2, 3], async function () {
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assert.sameValue(this, myThisValue, "thisArg should be bound as the this-value of mapfn");
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}, myThisValue);
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});
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