createEffect doesn't resolve void Params

[today-]

I have this code:

const handler = () => console.log();

const effect = createEffect('', {handler});

effect();

I got TS2554: Expected 1 arguments, but got 0. An argument for payload was not provided

So, I have to manually declare effect typings like this:

const effect = createEffect<void, void, any>('', {handler});

Or write wrappers:

const createBetterEffect = <Params = void, Done = any>(
  name?: string,
  options?: {handler?: (() => Done | Promise<Done>) | ((p: Params) => Done | Promise<Done>)},
) =>
  createEffect<Params, Done, string>(name, options);

I want createEffect to correctly infer void type of Params

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goodmind has been rewarded.

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Submitted pull Requests

• #189 Fix createEffect TypeScript type with void parameter

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