package.json

package.json is a JSON configuration file used in Node.js and JavaScript projects to define metadata, dependencies, scripts, and other project settings. It serves as the central manifest for npm (Node Package Manager) and Yarn, enabling dependency management, version control, and project automation. This file is essential for initializing, sharing, and running Node.js applications and packages.

Also known as: package.json file, npm package.json, node package.json, pkg.json, package config

Why learn package.json?

Developers should learn and use package.json when working with Node.js projects, as it is required for managing dependencies, specifying project details, and automating tasks through npm scripts. It is crucial for ensuring consistent environments across development, testing, and production, and for publishing packages to npm registries. Use cases include setting up new projects, installing libraries like Express or React, and defining build or deployment commands.

Learning Resources

• docs: npm docs: package.json
• tutorial: Node.js guide to package.json
• tutorial: FreeCodeCamp: What is package.json?
• video: YouTube: Understanding package.json