How to update data to a reactjs website?

Working with Data Node.js Frameworks
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Hi Lauren,

I found the right index.js and I guess there is no import React from ‘react’; or etc on line 1 but it simply begins with export const signup = (user) => {. Must it import something on line 1, for example import PropTypes from ‘prop-types’;

Component.propTypes = {? Or how should the import line of code be like?

Thank you!