package.json is a manifest file for Node.js projects, which includes things like metadata (the project's name, author, etc.) and a list of dependencies (other packages that the project depends on). It is usually located at the root of a project, and you can tell which package manager is being used by the accompanying 'lock' file. For example, package-lock.json is used by npm, yarn.lock is used by Yarn, and pnpm-lock.yaml is used by pnpm. Check the package.json file for scripts to see what commands are available to run, example: npm run dev.

  "name": "",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  "keywords": [],
  "author": "",
  "license": "ISC"