how to use angular playground code example

Example: install angular playground

# install
ng add angular-playground

# fix tsconfig.playground.json

  "compilerOptions": {
  	...
    "experimentalDecorators": true,
    "lib": [
      "es2018",
      "dom"
    ],
  ...


# test
npm run playground
# Open http://127.0.0.1:4201/