ng-package.json

{
  "$schema": "./node_modules/ng-packagr/ng-package.schema.json",
  "src": "src/core",
  "dest": "dist/core",
  "workingDirectory": ".ng_build",
  "lib": {
    "entryFile": "src/public_api.ts",
    "externals": {
      "@angular/cdk/accordion": "ng.cdk.accordion",
      "@angular/cdk/layout": "ng.cdk.layout",
      "@angular/material": "ng.material",
      "@angular/material/autocomplete": "ng.material.autocomplete",
      "@angular/material/button": "ng.material.button",
      "@angular/material/button-toggle": "ng.material.button-toggle",
      "@angular/material/card": "ng.material.card",
      "@angular/material/checkbox": "ng.material.checkbox",
      "@angular/material/chips": "ng.material.chips",
      "@angular/material/core": "ng.material.core",
      "@angular/material/datepicker": "ng.material.datepicker",
      "@angular/material/dialog": "ng.material.dialog",
      "@angular/material/expansion": "ng.material.expansion",
      "@angular/material/form-field": "ng.material.form-field",
      "@angular/material/grid-list": "ng.material.grid-list",
      "@angular/material/icon": "ng.material.icon",
      "@angular/material/input": "ng.material.input",
      "@angular/material/list": "ng.material.list",
      "@angular/material/menu": "ng.material.menu",
      "@angular/material/paginator": "ng.material.paginator",
      "@angular/material/progress-bar": "ng.material.progress-bar",
      "@angular/material/progress-spinner": "ng.material.progress-spinner",
      "@angular/material/radio": "ng.material.radio",
      "@angular/material/select": "ng.material.select",
      "@angular/material/sidenav": "ng.material.sidenav",
      "@angular/material/slide-toggle": "ng.material.slide-toggle",
      "@angular/material/slider": "ng.material.slider",
      "@angular/material/snack-bar": "ng.material.snack-bar",
      "@angular/material/sort": "ng.material.sort",
      "@angular/material/stepper": "ng.material.stepper",
      "@angular/material/table": "ng.material.table",
      "@angular/material/tabs": "ng.material.tabs",
      "@angular/material/toolbar": "ng.material.toolbar",
      "@angular/material/tooltip": "ng.material.tooltip"
    }
  }
}