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# parcel
/.cache
/dist

# parcel
/.cache
/dist

  <!-- ↓追加-->
  <script src="../src/index.js"></script>
</body>

<!-- 
  <link rel="manifest" href="%PUBLIC_URL%/manifest.json">
  <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
-->

<link rel="manifest" href="./manifest.json">
<link rel="shortcut icon" href="./favicon.ico">

  "scripts": {
    "start": "parcel serve public/index.html",
    "build": "parcel build public/index.html",
   }

<!-- 
  <link rel="manifest" href="%PUBLIC_URL%/manifest.json">
  <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
-->

<link rel="manifest" href="./manifest.json">
<link rel="shortcut icon" href="./favicon.ico">

  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",

"jsx": "react"

$ yarn tsc --init

$ yarn add @types/react

$ yarn start --no-cache

$ rm .cache
$ rm dist/

$ yarn build

$ yarn start

// @ts-ignore
import logo from "./logo.svg";

$ mv src/App.js src/App.tsx

$ yarn add parcel-bundler parcel-plugin-typescript typescript

$ npx create-react-app example-app