Uptade typescript

Author: filipemarruda

angular.json

@@ -30,7 +30,6 @@
               "optimization": true,
               "outputHashing": "all",
               "sourceMap": false,
-              "extractCss": true,
               "namedChunks": false,
               "aot": true,
               "extractLicenses": true,
@@ -76,7 +75,7 @@
       "prefix": "lib",
       "architect": {
         "build": {
-          "builder": "@angular-devkit/build-ng-packagr:build",
+          "builder": "@angular-devkit/build-angular:ng-packagr",
           "options": {
             "tsConfig": "projects/ngx-restangular/tsconfig.lib.json",
             "project": "projects/ngx-restangular/ng-package.json"

projects/ngx-restangular/tsconfig.lib.json

@@ -2,6 +2,7 @@
   "extends": "../../tsconfig.json",
   "compilerOptions": {
     "outDir": "../../out-tsc/lib",
+    "declarationMap": true,
     "target": "es2015",
     "module": "es2015",
     "moduleResolution": "node",