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