fix(e2e): add mocha types

e2e/tsconfig.e2e.json

@@ -3,7 +3,9 @@
   "compilerOptions": {
     "outDir": "../out-tsc/e2e",
     "module": "es2015",
-    "types":[]
+    "types": [
+      "mocha"
+    ]
   },
   "include": [
     "**/*.ts"

package.json

@@ -54,6 +54,7 @@
     "@ngx-translate/http-loader": "4.0.0",
     "@types/jasmine": "2.8.7",
     "@types/jasminewd2": "2.0.3",
+    "@types/mocha": "^5.2.6",
     "@types/node": "8.9.4",
     "chai": "^4.2.0",
     "codelyzer": "4.5.0",
@@ -71,8 +72,8 @@
     "karma-jasmine-html-reporter": "1.4.0",
     "mocha": "6.0.2",
     "npm-run-all": "4.1.5",
-    "spectron": "5.0.0",
     "rxjs": "6.4.0",
+    "spectron": "5.0.0",
     "ts-node": "7.0.1",
     "tslint": "5.11.0",
     "typescript": "3.2.4",