How to make create-react-app auto build?

Question

Unfortunately this is something you will have to do yourself. You can use a tool like npm-watch to accomplish what you want though:

Install npm-watch

npm i --save-dev npm-watch

package.json

{
  "name": "react-app",
  "version": "0.1.0",
  "private": false,
  "devDependencies": {
    "npm-watch": "^0.1.8",
    "react-scripts": "0.9.5",
  },
  "dependencies": {
    "react": "^15.4.2",
    "react-dom": "^15.4.2"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject",
    "watch": "npm-watch"
  },
  "watch": {
    "build": "src/"
  }
}

Afterwards, just use npm run watch to start up npm-watch so it can rebuild your assets on changes.

Update:

React-scripts now includes a proxy option that proxies requests to a different host/port. For example, if your backend is running on localhost at port 9000 under the /api route, then you would add this line to your package.json: "proxy": "localhost:9000/api". You could then make requests as you normally would in production. (source: https://create-react-app.dev/docs/proxying-api-requests-in-development)

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