tasks.json

{
  // These tasks will run in order when initializing your CodeSandbox project.
  "setupTasks": [
    {
      "name": "Set yarn version",
      "command": "yarn set version berry"
    },
    {
      "name": "Install Dependencies",
      "command": "yarn install"
    },
    {
      "name": "Build dependencies",
      "command": "yarn build:lib"
    },
    {
      "name": "Start dev server",
      "command": "yarn dev"
    }
  ],

  // These tasks can be run from CodeSandbox. Running one will open a log in the app.
  "tasks": {
    "build:lib": {
      "name": "build:lib",
      "command": "yarn build:lib",
      "runAtStart": false
    },
    "dev": {
      "name": "dev",
      "command": "yarn dev",
      "runAtStart": true,
      "preview": {
        "port": 4200
      }
    }
  }
}