JSX process in Custom Widget

[remkonoteboom]

That is the document that followed, so, yes, maybe it was the babel-cli that I sued.

Here is my package.json

Code:

{
  "name": "babel",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@babel/cli": "^7.14.5",
    "@babel/core": "^7.14.6"
  },
  "dependencies": {
    "@babel/preset-env": "^7.14.5",
    "@babel/preset-react": "^7.14.5"
  },
  "browserslist": "> 25%, not dead"
}