Command-Line Magic: Essential JavaScript CLI Commands

1. Node.js CLI Commands

Overview: Node.js is a JavaScript runtime that allows running JavaScript outside the browser, mainly for backend development.

Common Commands

• node file.js → Run a JavaScript file
• node → Open the interactive REPL (Read-Eval-Print Loop)
• node --version (node -v) → Check Node.js version
• node --inspect file.js → Runs a script with debugging enabled.

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2. npm (Node Package Manager) Commands

Overview: npm is the default package manager for Node.js, used to install and manage dependencies.

Common Commands

• npm init → Initialize a new project

• npm install package-name → Install a package

• npm install -g package-name → Install a package globally

• npm run script-name → Run a script from package.json

• npm update → Update all dependencies

• npm uninstall package-name → Removes a package.

• npm run script-name → Runs a script from package.json. Example: npm run start

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3. yarn (Alternative to npm) Commands

Overview: Yarn is a faster and more efficient alternative to npm for package management.

Common Commands

• yarn init → Initialize a project
• yarn add package-name → Install a package
• yarn global add package-name → Install a package globally
• yarn run script-name → Run a script
• yarn upgrade → Upgrade dependencies

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4. npx CLI Commands

Overview: npx allows running Node.js packages without installing them globally.

Common Commands

• npx create-react-app my-app → Create a new React app
• npx eslint . → Run ESLint without global installation
• npx tsc --init → Initializes TypeScript configuration

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5. pnpm (Fast Package Manager) CLI Commands

Overview: pnpm is a modern package manager that saves space by linking dependencies instead of duplicating them.

Common Commands

• pnpm init → Initialize a project
• pnpm add package-name → Install a package
• pnpm run script-name → Run a script

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6. React.js CLI Commands

Overview: React is a JavaScript library for building user interfaces, especially single-page applications (SPAs).

Common Commands

• npx create-react-app my-app → Create a new React app
• npm start → Start the development server
• npm run build → Build the app for production
• npm run test → Runs tests.

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7. Next.js CLI Commands

Overview: Next.js is a React-based framework that enables server-side rendering and static site generation.

Common Commands

• npx create-next-app@latest my-app → Create a Next.js project
• npm run dev → Start the development server
• npm run build → Build for production
• npm start → Start production server
• npm run lint → Lint the project

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8. Vue.js CLI Commands

Overview: Vue.js is a progressive JavaScript framework used to build interactive user interfaces.

Common Commands

• npm install -g @vue/cli → Install Vue CLI
• vue create my-app → Create a new Vue app
• npm run serve → Start the development server
• npm run build → Build for production
• vue add package-name → Adds a Vue plugin

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9. Angular CLI Commands

Overview: Angular is a TypeScript-based framework for building scalable web applications.

Common Commands

• npm install -g @angular/cli → Install Angular CLI

• ng new my-app → Create a new Angular app

• ng serve → Start the development server

• ng build → Build the project

• ng test → Runs unit tests.

• ng generate component my-component → Creates a new component.

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10. Vite.js CLI Commands

Overview: Vite is a fast build tool and development server for modern JavaScript applications.

Common Commands

• npm create vite@latest my-app --template react → Create a Vite app
• npm run dev → Start the development server
• npm run build → Build for production

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11. Express.js CLI Commands

Overview: Express is a lightweight Node.js framework for building backend APIs and web applications.

Common Commands

• npm install express → Install Express
• node server.js → Run an Express app

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12. NestJS CLI Commands

Overview: NestJS is a Node.js framework for building scalable server-side applications using TypeScript.

Common Commands

• npm install -g @nestjs/cli → Install NestJS CLI
• nest new my-app → Create a new NestJS project
• npm run start → Start the development server