问题
I'm trying to create web app in codepen. I'm using React, ReactDOM. All was fine. But when I added react-router-dom to my project, I got an error:
react-router-dom.min.js:1 Uncaught Error: Cannot find module "prop-types"
How can I fix this?
回答1:
As of React 15.5.0, PropTypes have been removed from the core React package as a separate dependency. To fix this, add prop-types into your code:
If you're loading via script tags:
<script src="https://unpkg.com/prop-types/prop-types.min.js"></script>
Or via NPM:
npm install --save prop-types
回答2:
Looks like the lates UMD build at:
<script src="https://unpkg.com/react-router-dom/umd/react-router-dom.min.js"></script>
is currently missing a dependence on prop-types. You can use version 4.0.0 instead for the time being to avoid this error:
<script type="text/javascript" src="https://unpkg.com/react-router-dom@4.0.0/umd/react-router-dom.min.js"></script>
回答3:
This is due to prop-type being missing. It can be added using your package manager.
If you're using npm:
npm install prop-types --save
If you're using yarn:
yarn add prop-types
来源：https://stackoverflow.com/questions/43357501/react-prop-types-error