form hook

useForm.js

import { useState } from "react";

export const useForm = cb => {
  const [values, setValues] = useState({});

  const handleSubmit = event => {
    if (event) event.preventDefault();
    if (cb && typeof cb === "function") cb(values);
  };

  const handleChange = event => {
    event.persist();
    setValues(values => ({
      ...values,
      [event.target.name]: event.target.value
    }));
  };

  return {
    handleChange,
    handleSubmit,
    values
  };
};