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create-react-app 2.xで作ったReactアプリでFlowが動かない

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正しくはこいつの通りにやっても動かねえってことなんですけど。

create-react-app 2.xからBabelが7になったっぽいので、Flowの公式チュートリアル通りには動かねえってことですね。

じゃあどうするかっつうと

yarn add -D @babel/preset-flow flow-bin

キモは@babel/preset-flow。7用のBabelプリセットを突っ込んでるところです。babel-cliも古いので多分いらないです

あとはbabelのpresetsに

@babel/preset-flow

を投げ込むだけですね。

Tellableというツイのオタクと割と簡単に喋れるサービス作ってます。誰か使って。

🍣食いたい。誰か奢って。

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