Building a CLI Tool in Node.js That People Actually Want to Use

What Makes a Good CLI? Most developer tools are CLIs. git , docker , npm , gh —all of them. A well-built CLI is invisible: it does what you expect, fails clearly, and stays out of the way. Here's how to build one that meets that bar. Setup with TypeScript mkdir my-cli && cd my-cli npm init -y npm install commander chalk ora execa npm install -D typescript @types/node ts-node tsup // package.json additions { "bin" : { "mycli" : "./dist/index.js" }, "scripts" : { "build" : "tsup src/index.ts --format cjs --dts" , "dev" : "ts-node src/index.ts" } } Commander: Argument Parsing #!/usr/bin/env node import { Command } from ' commander ' ; import { deploy } from ' ./commands/deploy ' ; import { init } from ' ./commands/init ' ; const program = new Command (); program . name ( ' mycli ' ) . description ( ' Deploy and manage your applications ' ) . version ( ' 1.0.0 ' ); program . command ( ' init ' ) . description ( ' Initialize a new project ' ) . option ( ' -t, --template <template> ' , ' pro