ng-package.json

{
  "$schema": "../../node_modules/ng-packagr/ng-package.schema.json",
  "lib": {
    "entryFile": "public_api.ts"
  },
  "assets": [
    "./toastr.css",
    "./toastr-old.css",
    "./toastr-bs4-alert.scss",
    "./toastr-bs5-alert.scss"
  ],
  "dest": "../../dist"
}