mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-25 06:24:27 +08:00
Chris Tate
bf21f47827
- Preserve async factory results and mixed table layouts through inference and destructuring. - Support checked Map and Object.fromEntries construction with native weak collections. - Keep native weak-key lifetimes and engine-backed collection identities intact.
30 lines
751 B
TypeScript
30 lines
751 B
TypeScript
function show(row: number[] | string[]): void {
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const [first, , third = "default"] = row;
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console.log(first, third);
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}
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show([1, 2, 3]);
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show(["a"]);
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show([]);
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const holes = [1, , 3] as number[];
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show(holes);
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let defaults = 0;
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function fallback(): string { defaults++; return "fallback"; }
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function values(row: number[] | string[]): void {
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const [first = fallback(), second = fallback()] = row;
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console.log(first, second, defaults);
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}
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values([0, 1]);
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values([""]);
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values([]);
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function nested(row: number[][] | string[]): void {
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const [first] = row;
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if (Array.isArray(first)) first.push(9);
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else console.log(first);
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}
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const original = [1, 2];
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const source = [original];
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nested(source);
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console.log(original.join(","));
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nested(["text"]);
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