Upgrading a project to React 16 with old dependencies

Question

I would like to upgrade a project to React 16, because I have some dependencies that already rely on it. However, I'm also tailing a few very old React packages that I have not found the time yet to upgrade to newer releases that do support React 16. Now I need to buy some time.

My project sources have kept up with the newer releases of React, but I wonder if there's anything that would not be possible to resolve for old dependencies that would cause them to remain completely broken with React 16?

Answer 1

Following this suggested comment, patching React early on by importing something like the following module before importing olden dependencies should work:

import React from 'react'

import PropTypes from 'prop-types'
import createClass from 'create-react-class'

Object.assign(React, {
  PropTypes,
  createClass
})

For projects that were receiving warnings prior to React 16, these then get resolved.