13 lines
288 B
JavaScript
13 lines
288 B
JavaScript
function f1(a, ...rest) {
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let b = rest[rest.length - 3];
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let c = rest[rest.length - 2];
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let d = rest[rest.length - 1];
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return [a, b, c, d];
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}
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expect(f1(1, 2)).toEqual([1, undefined, undefined, 2]);
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function f2(a, ...rest) {
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return rest[-1];
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}
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expect(f2(1, 2)).toBeUndefined();
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