27 lines
743 B
TypeScript
27 lines
743 B
TypeScript
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export type ActionGenerator<TType extends string = string, TPayloadGen = undefined> = {
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type: TType;
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} & (TPayloadGen extends Function
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? (...args: Parameters<TPayloadGen>) => {
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type: TType;
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payload: ReturnType<TPayloadGen>;
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}
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: (...args: any[]) => { type: TType; payload?: unknown });
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interface Action {
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<T extends string = string>(actionType: T): ActionGenerator<T>;
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<T extends string = string, F extends Function = Function>(
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actionType: T,
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payloadGen: F
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): ActionGenerator<T, F>;
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}
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/**
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* Creates an action generator.
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*/
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export const action: Action;
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/**
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* Utility type for payload generators that are passthroughs.
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*/
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export type Payload<T = unknown> = (arg: T) => T;
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