在package.json中将主页设置为变量，并使其有条件地更改

{
  "name": "my-app",
  "version": "1.0.0",
  "homepage": "$HOMEPAGE_URL"
}

{
  "name": "my-app",
  "version": "1.0.0",
  "scripts": {
    "start": "HOMEPAGE_URL=https://www.example.com npm run build",
    "build": "react-scripts build"
  }
}

{
  "name": "my-app",
  "version": "1.0.0",
  "scripts": {
    "start": "HOMEPAGE_URL=https://www.example.com npm run build",
    "start:dev": "HOMEPAGE_URL=https://dev.example.com npm run build",
    "start:prod": "HOMEPAGE_URL=https://prod.example.com npm run build",
    "build": "react-scripts build"
  }
}