akito0107/favalid

import { asyncCombine, asyncTester, minLength, toAsync } from "../main";

const USERDB = {
  "example@hello.com": true
};

const apiRequest = async t => {
  if (USERDB[t]) {
    return Promise.resolve(true);
  }
  return Promise.reject(new Error("user not exists"));
};

export const asyncValidator = async (target: any) => {
  return asyncCombine(
    toAsync(minLength(10, () => "at least 10 letters.")),
    asyncTester(apiRequest, () => "api check failed")
  )(target);
};

export const asyncValidatorWithReason = async (target: any) => {
  return asyncCombine(
    toAsync(minLength(10, () => "at least 10 letters.")),
    asyncTester(
      apiRequest,
      (e: any) => `api check failed with reason: ${e.message}`
    )
  )(target);
};