Uncaught ReferenceError: Buffer is not defined

[jenschr]

Right now, every newly created example will fail to run in the browser, with the above error. This seems to be related to an import referenced in this issue, but I just can't seem to locate it in the code of "
mqtt-react-hooks". Also mentioned in this issue, so many MQTT libs have this problem right now.

To reproduce the issue:

• use npx to create a basic app
• copy instructions from https://github.com/VictorHAS/mqtt-react-hooks/blob/master/README.md
• run in browser to see the error

Can reproduce every time. Some suggest to solve this by downgrading "react-script", but that's not a real fix and causes other problems.

package.json contents:

{
  "name": "mqtt-demo-react",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@testing-library/jest-dom": "^5.16.5",
    "@testing-library/react": "^13.4.0",
    "@testing-library/user-event": "^13.5.0",
    "mqtt-react-hooks": "^3.0.0-alpha.2",
    "react": "^18.2.0",
    "react-dom": "^18.2.0",
    "react-scripts": "5.0.1",
    "url": "^0.11.0",
    "web-vitals": "^2.1.4"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts 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"
    ]
  }
}

[haisamMH]

Any solutions would be appreciated!