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https://github.com/vercel-labs/scriptc.git
synced 2026-10-24 06:14:01 +08:00
Chris Tate
6310dfb960
* Reuse reachability lowering output - Retain reachable IR and assemble the emitted module without lowering bodies a second time - Preserve reached-only artifact filtering, coverage remainder behavior, and add lowering phase timing * Preserve record order in retained lowering * Preserve record order in retained helpers * Preserve generic lowering record order * Recheck retained generic rest order * Record retained lowering parity fixtures * Preserve retained lowering failure parity
27 lines
733 B
TypeScript
27 lines
733 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 WeakMap 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 WeakMap<object, number>();
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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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