for creating library and application for testing

ng new uni-table --no-standalone --create-application=false

ng g library uni-table --no-standalone --prefix=uni

ng g application uni-table-example --no-standalone

for build library and test on project and publish on npm package manager

    "start": "ng serve uni-table-example",
    "lib:build": "ng build uni-table",
    "uni-table": "ng serve uni-table-example",
    "lib:package": "cd dist/uni-table && npm pack",
    "lib:publish": "cd dist/uni-table && npm publish --access public"

For access user to npm

npm adduser

• login through browser

For Build package:

• go to my-library folder
• update version no.
• run this command for build package :
• ng build my-library --configuration=production

For Publish library

• go to dist folder
• npm publish --access public

git tag

git tag -a v1.0.0 -m "Release version 1.0.0"
or
git tag v1.0.0
git push origin v1.0.0

git Release

Create a Release on GitHub:
Go to the "Releases" section of your repository.
Click "Draft a new release."
Fill in the tag, title, and description.
Publish the release.