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Add support for return types on callHook/callHookParallel #81

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Add support for return types on callHook/callHookParallel #81

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5 changes: 3 additions & 2 deletions src/hookable.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@ type InferSpyEvent<HT extends Record<string, any>> = {
context: Record<string, any>;
};
}[keyof HT];
type Promisify<T> = T extends Promise<infer U> ? Promise<U> : Promise<T>

export class Hookable<
HooksT extends Record<string, any> = Record<string, HookCallback>,
Expand Down Expand Up @@ -189,15 +190,15 @@ export class Hookable<
callHook<NameT extends HookNameT>(
name: NameT,
...arguments_: Parameters<InferCallback<HooksT, NameT>>
): Promise<any> {
): Promisify<ReturnType<InferCallback<HooksT, NameT>>> {
arguments_.unshift(name);
return this.callHookWith(serialTaskCaller, name, ...arguments_);
}

callHookParallel<NameT extends HookNameT>(
name: NameT,
...arguments_: Parameters<InferCallback<HooksT, NameT>>
): Promise<any[]> {
): Promisify<ReturnType<InferCallback<HooksT, NameT>>> {
arguments_.unshift(name);
return this.callHookWith(parallelTaskCaller, name, ...arguments_);
}
Expand Down