Issue with Upgrade from Tailwind v2 to v3 React Js using Craco

user_13997711 0
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I was using Tailwind v2 and when I am upgrading it to v3 it is giving me Postcss 8 Error (Error: PostCSS plugin tailwindcss requires PostCSS 8.). I tried to resolve this Error but did not succeed. Is there any way I can use Tailwind Cli in React Js. Error ScreenShoot

  "name": "frontend",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@craco/craco": "^6.4.0",
    "@formatjs/intl-pluralrules": "^4.1.5",
    "@formatjs/intl-relativetimeformat": "^9.3.2",
    "@headlessui/react": "^1.4.2",
    "@heroicons/react": "^1.0.5",
    "@manaflair/redux-batch": "^1.0.0",
    "@reduxjs/toolkit": "^1.6.2",
    "@tailwindcss/forms": "^0.4.0",
    "@tailwindcss/line-clamp": "^0.3.0",
    "@testing-library/jest-dom": "^5.11.4",
    "@testing-library/react": "^11.1.0",
    "@testing-library/user-event": "^12.1.10",
    "react": "^17.0.2",
    "react-apexcharts": "^1.3.9",
    "react-autocomplete": "^1.8.1",
    "react-datepicker": "^4.5.0",
    "react-dom": "^17.0.2",
    "web-vitals": "^1.0.1",
    "yup": "0.29.0"
  },
  "devDependencies": {
    "autoprefixer": "^10.4.2",
    "copyfiles": "2.1.1",
    "postcss": "^8.4.5",
    "prettier": "^1.19.1",
    "sass": "1.32.8",
    "serve": "11.2.0",
    "tailwindcss": "^3.0.12"
  },
  "scripts": {
    "start": "craco start",
    "dev": "TAILWIND_MODE=watch craco start",
    "build": "craco build",
    "test": "craco test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": [
      "react-app",
      "react-app/jest"
    ]
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  }
}
tailwind-css npm node.js migrate upgrade
1 Answers

tailwindcss v3 only supports Postcss8 and only create-react-app v5 supports Postcss8 for now. So you need to upgrade the create-react-app to v5. No need for craco in create-react-app v5 as well

First make sure to checkout to different branch or push your code to github before migrating, just for safety.

1.First run npm uninstall @craco/craco autoprefixer postcss tailwindcss
Delete the craco.config.js file
Delete the tailwind.config.js
Now just follow the offical tailwindcss docs
2. Run npm install -D tailwindcss postcss autoprefixer
3. npx tailwindcss init -p
copy paste the tailwind.config.js file from tailwindcss docs
4. npm install react-scripts@latest
5. Now npm start
6. Change the npm scripts:
"start": "react-scripts start"
"build": "react-scripts build"
"test": "react-scripts test"
"eject": "react-scripts eject"
Later paste your previous tailwind.config theme in the new tailwind.config.js file.

The order of steps may or may not matter but following this steps worked for me.

user_142752830
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