Understanding NPM - Node.js Package Manager

Learn to create and configure a package.json in the root of your project, using npm init or yarn init to set name, version, author, and dependencies.

install the semver package as a project dependency and practice version checks using helper methods like valid, greater than, and less than, noting its use in Babel.

Install the semver package with npm or yarn, inspect its package.json and bin, and demonstrate methods like valid, greater than, coerce, range, satisfies, inc, and parse to manage versions.

Practice explains how to manage npm dependencies by installing and removing packages, distinguishing dependencies from development dependencies, and using npm install --production to install only dependencies, and understanding node_modules behavior.

Embed moment.js as a browser dependency in a single index.js file, format the clock time in the browser, and observe that browser apps ignore node_modules and package.json.

Understand when to classify NPM packages as dependencies or development dependencies for browser apps and public packages, and learn how bundling affects final builds.

Learn to install a specific package version with NPM install package@version, audit for vulnerabilities with NPM audit, and revert to the current stable release using the moment example.

Understand how the log file is created automatically since 5.0.0, updated with npm installs, committed with package.json to lock exact dependencies, while excluding node_modules and using dev true flags.

The log file ensures consistency of all dependency versions, including child dependencies, and is created and updated automatically; commit it to source control to benefit when updating packages.

Use the npm update command to refresh project dependencies within semver rules, updating package.json and the log file, and install changes in node_modules; also learn updating a single package.

Learn to initialize a new npm project, install two older package versions—one with --save-exact and one without—then update dependencies with npm update.

Explore npm scripts, including default npm start and npm test, and learn to add a start script in package.json to run node files like server.js.

Add a press start script that runs before npm start, install the colors package, require it in src/press start js, and print a green console.log message saying application is starting.

Install npm-run-all as a development dependency, add an all script to package.json, and run npm run all --parallel to execute start, custom one, and custom two in parallel.