fix: bundle size (#304)

fixes #300

package.json

@@ -6,7 +6,7 @@
   "scripts": {
     "clean": "rimraf out-tsc dist/*",
     "prebuild": "npm run clean",
-    "build": "ng-packagr -p ./src/ng-package.json && npm run build:themes",
+    "build": "ng-packagr -p ./src/package.json && npm run build:themes",
     "build:demo": "rimraf dist && webpack --config ./scripts/webpack.dev.js --progress --profile --bail",
     "build:themes": "node-sass --output-style compressed src/themes/ -o dist/themes",
     "prestart": "yarn install",
@@ -30,6 +30,8 @@
     "@angular/platform-browser": "^5.0.3",
     "@angular/platform-browser-dynamic": "^5.0.3",
     "@angular/router": "^5.0.3",
+    "tsickle": ">=0.25.5",
+    "tslib": "^1.7.1",
     "@ng-bootstrap/ng-bootstrap": "^1.0.0-beta.5",
     "@types/jasmine": "^2.5.36",
     "@types/node": "^6.0.87",
@@ -63,7 +65,7 @@
     "karma-remap-istanbul": "0.2.1",
     "karma-sourcemap-loader": "^0.3.7",
     "karma-webpack": "2.0.5",
-    "ng-packagr": "^1.5.0-rc.0",
+    "ng-packagr": "^2.1.0",
     "ng-snippets-loader": "^0.2.5",
     "node-sass": "^4.0.0",
     "null-loader": "0.1.1",

src/package.json

@@ -1,4 +1,5 @@
 {
+  "$schema": "../node_modules/ng-packagr/package.schema.json",
   "name": "@ng-select/ng-select",
   "version": "0.23.1",
   "description": "Angular ng-select - All in One UI Select, Multiselect and Autocomplete",
@@ -23,5 +24,12 @@
     "@angular/common": ">=4.0.0 <6.0.0",
     "@angular/core": ">=4.0.0 <6.0.0",
     "@angular/forms": ">=4.0.0 <6.0.0"
+  },
+  "ngPackage": {
+    "lib": {
+      "flatModuleFile": "ng-select",
+      "entryFile": "index.ts"
+    },
+    "dest": "../dist"
   }
 }