Gatsby disable prefetch link component

Link.jsx

import React from 'react'
import { Link } from 'gatsby'
import { Link as RouterLink } from '@reach/router'

function MyLink({ children, to, prefetch, ...rest }) {
  if (!prefetch) {
    return <RouterLink to={to} {...rest}>{children}</RouterLink >
  }
  return <Link to={to} {...rest}>{children}</Link>
}

MyLink.defaultProps = {
  prefetch: true
}

export default MyLink