mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-23 06:10:02 +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.
27 lines
727 B
TypeScript
27 lines
727 B
TypeScript
class Pair {
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a = 1;
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b = 2;
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}
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function earlierGenericSource<T>(_: T): void {
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const value = { b: 2, a: 1 };
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console.log(Object.keys(value).length);
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}
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function earlierOrdinary(): void {
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earlierGenericSource(1);
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}
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function laterGeneric<T>(_: T): void {
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const sameShape = { a: 1, b: 2 };
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console.log(Object.keys(sameShape).length);
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earlierOrdinary();
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// The deferred rest-order rejection must poison this whole statement:
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// the later WeakRef declarator is never visited, and the next statement
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// sees rest as a blocked binding just like the historical emit pass.
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const { ...rest } = new Pair(), blocked = new WeakRef<object>({});
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console.log(Object.keys(rest).join(","), blocked);
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}
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laterGeneric(1);
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