downgrade angular compiler

package-lock.json

 {
-  "name": "ldemeqklbeo.angular",
+  "name": "angular",
   "version": "0.0.0",
   "lockfileVersion": 1,
   "requires": true,
@@ -590,14 +590,6 @@
         "tslib": "1.9.3"
       }
     },
-    "@angular/flex-layout": {
-      "version": "2.0.0-beta.12",
-      "resolved": "https://registry.npmjs.org/@angular/flex-layout/-/flex-layout-2.0.0-beta.12.tgz",
-      "integrity": "sha512-QTOKZxehYTh8fj64V/pNVWNbfNtebSbssyMIXiGJuHTzfyF7GYdRmtjoR2pNpllycz3rE5NYX77EB140Y6BCnw==",
-      "requires": {
-        "tslib": "1.9.3"
-      }
-    },
     "@angular/forms": {
       "version": "5.2.11",
       "resolved": "https://registry.npmjs.org/@angular/forms/-/forms-5.2.11.tgz",

package.json

@@ -33,7 +33,7 @@
   "devDependencies": {
     "@angular-devkit/build-angular": "~0.10.0",
     "@angular/cli": "~7.0.2",
-    "@angular/compiler-cli": "~7.0.0",
+    "@angular/compiler-cli": "5.2.11",
     "@angular/language-service": "~7.0.0",
     "@types/node": "~8.9.4",
     "@types/jasmine": "~2.8.8",
@@ -49,6 +49,6 @@
     "protractor": "~5.4.0",
     "ts-node": "~7.0.0",
     "tslint": "~5.11.0",
-    "typescript": "~3.1.1"
+    "typescript": "2.6.1"
   }
 }