Host codemods on the website

It would be nice to provide a REPL for React codemods on the website, particular for ones like
createClass or PropTypes. This would be handy for one-offs like converting StackOverflow answers or fiddles and would also introduce people to the idea of codemodding in a playful way. The REPL could also include instructions for how to run the codemods on the command line.

These codemods live in reactjs/react-codemod and are published to NPM under the name react-codemod. Seems like we could add the NPM module to the website's dependencies and then embed a few of them into a new REPL component.

まず、ウェブサイトの依存関係の設定と、react-codemod NPM パッケージを含む reactjs/react-codemod プロジェクトを確認します。ウェブサイトが createClass や PropTypes などの選択した codemod 用の REPL を提供し、コマンドラインから実行する手順を含んでいれば完了です。