mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-21 05:50:55 +08:00
Chris Tate
88e6e6dcd0
- Defer empty callback storage while preserving method and prototype updates. - Reuse source and node-handle information within compiler snapshots. - Coalesce small checker requests and avoid response copies.
61 lines
1.5 KiB
TypeScript
61 lines
1.5 KiB
TypeScript
class Counter {
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value = 0;
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notify(): void { this.value++; }
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invoke(): void { this.notify(); }
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}
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const counter = new Counter();
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counter.invoke();
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const original = counter.notify;
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counter.notify = (): void => { counter.value += 10; };
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counter.invoke();
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original.call(counter);
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console.log(counter.value);
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class Quiet {
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value = 0;
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finish(): void { this.value++; }
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}
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const quiet = new Quiet();
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quiet.finish();
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const events: string[] = [];
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Object.defineProperty(quiet, 'finish', {
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configurable: true,
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get() {
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events.push('get');
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return (): void => { quiet.value += 20; };
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},
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});
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quiet.finish();
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console.log(quiet.value, events.join(','));
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Object.defineProperty(quiet, 'finish', { configurable: true, get() { throw new Error('read'); } });
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try { quiet.finish(); } catch (error) { console.log((error as Error).message); }
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class Base {
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value = 0;
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notify(): void { this.value++; }
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invoke(): void { this.notify(); }
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}
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class Derived extends Base {
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notify(): void { this.value += 2; }
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}
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const derived = new Derived();
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derived.invoke();
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function replace(): void {
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Derived.prototype.notify = (): void => { derived.value += 30; };
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}
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replace();
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derived.invoke();
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console.log(derived.value);
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class Unchanged {
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value = 0;
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touch(): void { this.value++; }
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}
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let constructions = 0;
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function create(): Unchanged { constructions++; return new Unchanged(); }
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create().touch();
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const unchanged = new Unchanged();
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unchanged.touch();
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unchanged.touch();
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console.log(constructions, unchanged.value, Object.keys(unchanged).join(','));
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