Guided Notes
npm & package.json
Initialising a project, installing dependencies and dev dependencies, semantic versioning, scripts, lockfiles, and npx.
npm in one slide
Slide 1 / 5npm (Node Package Manager) is installed with Node. It: • downloads packages from the npm registry into node_modules, • records them in package.json, • locks exact versions in package-lock.json, • runs project scripts (npm run dev).
npm init -y creates a package.json; npm install express adds a dependency; npm install -D vitest adds a development-only dependency.