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LibJS: Implement String.prototype.at with UTF-16 code units

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Timothy Flynn 2021-07-19 13:46:21 -04:00 • committed by Andreas Kling
parent 892bfdbbcf
commit ef2ff5f88b
2 changed files with 17 additions and 4 deletions
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8
Userland/Libraries/LibJS/Tests/builtins/String/String.prototype.at.js
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@ -13,3 +13,11 @@ test("basic functionality", () => {
expect(string.at(-4)).toBeUndefined();
expect(string.at(-Infinity)).toBeUndefined();
});
test("UTF-16", () => {
var s = "😀";
expect(s).toHaveLength(2);
expect(s.at(0)).toBe("\ud83d");
expect(s.at(1)).toBe("\ude00");
expect(s.at(2)).toBeUndefined();
});