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LibJS: Allow null or undefined as a bound |this| value in strict mode

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This commit is contained in:
Jack Karamanian 2020-06-02 21:26:35 -05:00 • committed by Andreas Kling
parent 870bcaeef6
commit b0932b0aec
2 changed files with 12 additions and 9 deletions
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18
Libraries/LibJS/Tests/Function.prototype.bind.js
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@ -103,15 +103,17 @@ try {
assert(Make5() === 5);
assert(new Make5().valueOf() === 5);
// FIXME: Uncomment me when strict mode is implemented
// function strictIdentity() {
// return this;
// }
// Null or undefined should be passed through as a |this| value in strict mode.
(() => {
"use strict";
function strictIdentity() {
return this;
}
// assert(strictIdentity.bind()() === undefined);
// assert(strictIdentity.bind(null)() === null);
// assert(strictIdentity.bind(undefined)() === undefined);
// })();
assert(strictIdentity.bind()() === undefined);
assert(strictIdentity.bind(null)() === null);
assert(strictIdentity.bind(undefined)() === undefined);
})();
// Arrow functions can not have their |this| value set.
assert((() => this).bind("foo")() === globalThis)