shadcn-ui/ui codebase analysis: How does shadcn-ui CLI work? — Part 1.0

1. shadcn/ui

   1 330 93,691 9.6 TypeScript

   A set of beautifully-designed, accessible components and a code distribution platform. Works with your favorite frameworks. Open Source. Open Code.

   

   // source: https://github.com/shadcn-ui/ui/blob/main/packages/cli/src/index.ts #!/usr/bin/env node import { add } from "@/src/commands/add" import { diff } from "@/src/commands/diff" import { init } from "@/src/commands/init" import { Command } from "commander" import { getPackageInfo } from "./utils/get-package-info" process.on("SIGINT", () => process.exit(0)) process.on("SIGTERM", () => process.exit(0)) async function main() { const packageInfo = await getPackageInfo() const program = new Command() .name("shadcn-ui") .description("add components and dependencies to your project") .version( packageInfo.version || "1.0.0", "-v, --version", "display the version number" ) program.addCommand(init).addCommand(add).addCommand(diff) program.parse() } main()

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3. Commander.js

   2 67 27,578 7.9 JavaScript

   node.js command-line interfaces made easy

   

   Commander is an npm package used here to enable CLI interactions.

4. type-fest

   3 37 15,936 9.3 TypeScript

   A collection of essential TypeScript types

   

   Notice how there’s an enforced PackageJson type from type-fest. It is from the Legend, Sindre Sorhus. I see this guy’s name so often when I dig into open source.

5. fs-extra

   4 18 9,588 2.3 JavaScript

   Node.js: extra methods for the fs object like copy(), remove(), mkdirs()

   

   fs.readJSONSync reads a JSON file and then parses it into an object. In this case, it is an object of type PackageJson.

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