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x/evt/lib/Evt.loosenType.ts

šŸ’§EventEmitter's typesafe replacement
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import type { SwapEvtType, UnpackEvt, NonPostableEvtLike} from "./types/index.ts";
/** * https://docs.evt.land/api/evt/loosenType */export function loosenType<E extends NonPostableEvtLike<any>, SupersetOfT>( evt: E): UnpackEvt<E> extends SupersetOfT ? SwapEvtType<typeof evt, SupersetOfT> : "NOT A SUPERSET" { return evt as any;}
/*import { Evt } from "./Evt.ts";const x: Evt<boolean> = loosenType(new Evt<true>()); x;const y: Evt<boolean> = loosenType(new Evt<number>()); y;*/