strongbus - v3.0.0
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    Interface EmittingSurface<TEventMap>

    Raise events on a Bus without lifecycle teardown.

    Event-map typing is bivariant (no in out) so a surface over a wider map is assignable to a narrower view — the same Wide→Narrow shape as Bus.

    interface EmittingSurface<TEventMap extends EventMap = EventMap> {
        emit: {
            <T extends string | number | symbol>(event: T, payload?: null): boolean;
            <T extends string | number | symbol>(
                event: T,
                payload: TEventMap[T],
            ): boolean;
            (
                ...args: {
                    [K in string | number | symbol]: [event: K, payload: TEventMap[K]]
                }[keyof TEventMap],
            ): boolean;
        };
    }

    Type Parameters

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    emit

    Properties

    emit: {
        <T extends string | number | symbol>(event: T, payload?: null): boolean;
        <T extends string | number | symbol>(
            event: T,
            payload: TEventMap[T],
        ): boolean;
        (
            ...args: {
                [K in string | number | symbol]: [event: K, payload: TEventMap[K]]
            }[keyof TEventMap],
        ): boolean;
    }

    Type Declaration

      • <T extends string | number | symbol>(event: T, payload?: null): boolean

      • Emit a void event with no payload (or an explicit null/undefined).

        Type Parameters

        • T extends string | number | symbol

        Parameters

        • event: T
        • Optionalpayload: null

        Returns boolean

      • <T extends string | number | symbol>(event: T, payload: TEventMap[T]): boolean

      • Emit an event with its correlated payload. The payload is required for any event whose mapped type is not void; correlating it directly (rather than through a rest tuple) lets it type-check even when TEventMap is a generic type parameter, or when forwarding by a generic key over a concrete map (T extends keyof M).

        Type Parameters

        • T extends string | number | symbol

        Parameters

        Returns boolean

      • (
            ...args: {
                [K in string | number | symbol]: [event: K, payload: TEventMap[K]]
            }[keyof TEventMap],
        ): boolean

      • Correlated-tuple form: the (event, payload) pair must be one of the [event, payload] tuples of TEventMap. Use this after discriminating on event when both values started as independent unions.

        Parameters

        • ...args: { [K in string | number | symbol]: [event: K, payload: TEventMap[K]] }[keyof TEventMap]

        Returns boolean

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