To show how library is configured with the angular.json file

angular.json

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "angular-component-library": {
      "root": "",
      "sourceRoot": "src",
      ...
      ...
    },
    "angular-component-library-e2e": {
      "root": "e2e/",
      "projectType": "application",
      ...
      ...
    },
    "ratify": {
      "root": "projects/ratify",
      "sourceRoot": "projects/ratify/src",
      "projectType": "library",
      "prefix": "lib",
      "architect": {
        "build": {
          "builder": "@angular-devkit/build-ng-packagr:build",
          "options": {
            "tsConfig": "projects/ratify/tsconfig.lib.json",
            "project": "projects/ratify/ng-package.json"
          },
          "configurations": {
            "production": {
              "project": "projects/ratify/ng-package.prod.json"
            }
          }
        },
        ...
        ...
      }
    }
  },
  "defaultProject": "angular-component-library"
}