Missing script: "start"

[gabedeko]

Hello,

The fourth step of the Development section of the documentation step indicates to run

npm start

but when I run it I get an error that the script is missing. Below is the code default code after running npm run build

"scripts": {
    "build": "tsc",
    "clean": "rm -rf ./dist/ && rm -rf ./docs/",
    "deploy": "npm run clean && npm run build && npm run tutorial && npm run rollup && npm run docs",
    "docs": "cd website && hugo",
    "package": "tar --exclude=\"*.js.map\" -czvf ./dist/library.tar.gz ./dist/ ./css/library.css",
    "website": "http-server ./docs",
    "watch": "tsc -w",
    "rollup": "rollup --config",
    "tutorial": "./getting-started.sh"
  }

What script command should I be putting for start in package.json?

Thanks