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https://github.com/vercel-labs/scriptc.git
synced 2026-11-11 02:03:59 +08:00
Chris Tate
4e5864bed4
A Symbol.asyncIterator method that returns a compiled generator is iterated instead of refused. Async yield* awaits a synchronous delegate's final value, and return() results that are not objects throw V8's TypeError, which names primitive results. The coverage fixture drops its async yield* example, which now compiles.
25 lines
635 B
TypeScript
25 lines
635 B
TypeScript
// A program whose ENTRY PATH is fully static while an unused corner is
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// not: builds succeed (unreached bodies never lower), and the report
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// shows the corner's blockers in the dim "in unreached code" group.
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function used(n: number): number {
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return n + 1;
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}
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class Bag {
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size = 0;
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}
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// Never called: the class-instance for-in and the labeled jump into a
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// desugared loop can't fail a build.
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function unusedCorner(bag: Bag, pairs: Map<string, number>): void {
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for (const k in bag) {
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console.log(k);
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}
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outer: for (const [k, v] of pairs) {
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if (v > 0) break outer;
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console.log(k);
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}
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}
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console.log(used(41));
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