tor-browser

The Tor Browser
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thisarg-omitted-sloppy.js (1086B)

      1 // |reftest| async
      2 // Copyright (C) 2022 Igalia, S.L. All rights reserved.
      3 // This code is governed by the BSD license found in the LICENSE file.
      4 
      5 /*---
      6 esid: sec-array.fromasync
      7 description: >
      8  If thisArg is omitted, mapfn is called with the global object as the
      9  this-value in sloppy mode
     10 info: |
     11  6. If _mapping_ is *true*, then
     12    a. Let _mappedValue_ be Call(_mapfn_, _thisArg_, « _nextValue_, 𝔽(_k_) »).
     13 
     14  OrdinaryCallBindThis, when _F_.[[ThisMode]] is ~global~, where _F_ is the
     15  function object:
     16  6. Else,
     17    a. If _thisArgument_ is *undefined* or *null*, then
     18      i. Let _globalEnv_ be _calleeRealm_.[[GlobalEnv]].
     19      ii. Assert: _globalEnv_ is a Global Environment Record.
     20      iii. Let _thisValue_ be _globalEnv_.[[GlobalThisValue]].
     21 flags: [async, noStrict]
     22 includes: [asyncHelpers.js]
     23 features: [Array.fromAsync]
     24 ---*/
     25 
     26 asyncTest(async () => {
     27  await Array.fromAsync([1, 2, 3], async function () {
     28    assert.sameValue(
     29      this,
     30      globalThis,
     31      "the global should be bound as the this-value of mapfn when thisArg is omitted"
     32    );
     33  });
     34 });