AngularComponentLibrary

This project is to understand how to create npm ready angular component libraries to use in an angular application.

After, generating an angular application for the demo we will follow below steps to create component library

1. Generate a library project by running following command
   ng generate library ratify --prefix=lib
2. Library project will be created with one default exported component lib-ratify
3. Lets write some code snippet to make lib-ratify to behave like a rating component.
4. We can find the source code of rating component here
5. To build the library run the below command
   ng build ratify
6. Built is added to the dist folder of our application as dist/ratify
7. There are two ways angular registers external libraries.
   1. NPM Module declarations in the package.json file.
   2. Library registered in the tsconfig.json file

   Note: Since we generated library with our application. Angular registered our library by placing library dependency entries in angular.json and tsconfig.json

8. We have added few scripts to built the library and pack for npm in package.json

"scripts": {
    ...
    ...
    "build-lib": "ng build --prod ratify",
    "npm-pack": "cd dist/ratify && npm pack",
    "package": "npm run build-lib && npm run npm-pack"
  }

Last three commands (build-lib, npm-pack, package) are responsible for building and packing the library for npm

9. Run npm run package to create npm ready library in dist/ratify

Finally, lets see how to publish npm package

1. Add npm user by running below command
   npm adduser

Note:

1. If you are not signed up above command will sign up you as npm user.
2. Type npm whoami from a terminal to see if you are already logged in (technically, this also means that your credentials have been stored locally).

2. Login into npm by running
   npm login
3. Go to the packaged output in dist/ratify

> cd dist/ratify
> dist/ratify> npm publish

npm package will be uploaded to the npm registry - angular-ratify