I have follow package.json looks good in npm. However, I figure out there is problem.

The distributed package only includes index.js !

After several research. There is some finding, npm. will looking for .gitignore if .npmignore not found.

Add files array with dist folder

  "name": "@scope/package",
  "version": "0.1.4",
  "main": "dist/index.js",
  "types": "dist/index.d.ts",
  "files": [
     "dist"
Finally