Publishing a TypeScript Library to npm

Prepare package.json

{
  "name": "my-lib",
  "version": "1.0.0",
  "main": "dist/index.cjs.js",
  "module": "dist/index.esm.js",
  "types": "dist/index.d.ts",
  "files": ["dist"],
  "scripts": { "build": "tsc && rollup -c" }
}

Build steps

1. Compile with tsc to generate declarations.
2. Bundle with Rollup/Webpack for a ready‑to‑publish bundle.

Publishing

npm login
npm publish

Using publishConfig

"publishConfig": { "access": "public" }

Semantic Release (optional)

Automate version bump & changelog with semantic-release.