Create and Publish NPM Module

What we're usuing

• tsup
• TypeScrip
• Vitest

Step 1: Create a new project

pnpm init

pnpm add -D typescript tsup vitest

npx tsc --init

Step 2: Setup tsup

tsup.config.ts

import { defineConfig } from "tsup";

export default defineConfig({
  entry: ["src/index.ts"],
  format: ["cjs", "esm"], // Build for commonJS and ESmodules
  dts: true, // Generate declaration file (.d.ts)
  splitting: false,
  sourcemap: true,
  clean: true,
});

Step 3: Update package.json

{
  "scripts": {
    "build": "tsup",
    "test": "vitest"
  }
}

Step 3: Create some code

Step 4: Automate updates with github actions