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LibJS: Use "," separator in Array.prototype.join() if first arg is undefined

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This is how the spec describes it, not "if the first arg is missing".
Also swap length & separator steps to match spec.
This commit is contained in:
Linus Groh 2020-11-04 00:31:23 +00:00 • committed by Andreas Kling
parent 3e0e84dcd1
commit e5845ba3a0
2 changed files with 5 additions and 4 deletions
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1
Libraries/LibJS/Tests/builtins/Array/Array.prototype.join.js
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@ -4,6 +4,7 @@ test("length is 1", () => {
test("basic functionality", () => {
expect(["hello", "friends"].join()).toBe("hello,friends");
expect(["hello", "friends"].join(undefined)).toBe("hello,friends");
expect(["hello", "friends"].join(" ")).toBe("hello friends");
expect(["hello", "friends", "foo"].join("~", "#")).toBe("hello~friends~foo");
expect([].join()).toBe("");