commerce/framework/elasticpath/auth/use-signup.tsx

import { useCallback } from 'react'
import useCustomer from '../customer/use-customer'
import { MutationHook } from '@commerce/utils/types'
import { CommerceError } from '@commerce/utils/errors'
import useSignup, { UseSignup } from '@commerce/auth/use-signup'

export default useSignup as UseSignup<typeof handler>

export const handler: MutationHook<any> = {
  fetchOptions: {
    url: '/api/signup',
    method: 'POST',
  },
  async fetcher({ input: { firstName, lastName, email, password }, options, fetch }) {
    console.log("input", firstName)
    if (!(firstName && lastName && email && password)) {
      throw new CommerceError({
        message:
          'A first name, last name, email and password are required to login',
      })
    }

    return fetch({
      ...options,
      variables: {
        firstName,
        lastName,
        email,
        password
      },
    });
  },
  useHook: ({ fetch }) => () => {
    const { revalidate } = useCustomer()

    return useCallback(
      async function signup(input) {
        const data = await fetch({ input })
        await revalidate()
        return data
      },
      [fetch, revalidate]
    )
  },
}