Effector factory - Confirmation of some action

createConfirmation.ts

import { createEvent, restore, sample } from "effector";

export function createConfirmation<Require, Allow>() {
  type Confirmed = { require: Require; allow: Allow };

  const require = createEvent<Require>();
  const $payload = restore(require, null);

  const allow = createEvent<Allow>();
  const confirmed = createEvent<Confirmed>();

  sample({
    source: $payload,
    clock: allow,
    fn(require, allow) {
      const payload: Confirmed = { require: require!, allow };
      return payload;
    },
    target: confirmed,
  });

  return {
    require,
    allow,
    confirmed,
  };
}