add test that english and german localization files have same keys

package-lock.json

@@ -110,6 +110,15 @@
                 "fastq": "^1.6.0"
             }
         },
+        "@types/fs-extra": {
+            "version": "9.0.6",
+            "resolved": "https://registry.npmjs.org/@types/fs-extra/-/fs-extra-9.0.6.tgz",
+            "integrity": "sha512-ecNRHw4clCkowNOBJH1e77nvbPxHYnWIXMv1IAoG/9+MYGkgoyr3Ppxr7XYFNL41V422EDhyV4/4SSK8L2mlig==",
+            "dev": true,
+            "requires": {
+                "@types/node": "*"
+            }
+        },
         "@types/jasmine": {
             "version": "3.6.2",
             "resolved": "https://registry.npmjs.org/@types/jasmine/-/jasmine-3.6.2.tgz",
@@ -131,6 +140,12 @@
             "integrity": "sha512-3c+yGKvVP5Y9TYBEibGNR+kLtijnj7mYrXRg+WpFb2X9xm04g/DXYkfg4hmzJQosc9snFNUPkbYIhu+KAm6jJw==",
             "dev": true
         },
+        "@types/node": {
+            "version": "14.14.20",
+            "resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.20.tgz",
+            "integrity": "sha512-Y93R97Ouif9JEOWPIUyU+eyIdyRqQR0I8Ez1dzku4hDx34NWh4HbtIc3WNzwB1Y9ULvNGeu5B8h8bVL5cAk4/A==",
+            "dev": true
+        },
         "@types/parse-json": {
             "version": "4.0.0",
             "resolved": "https://registry.npmjs.org/@types/parse-json/-/parse-json-4.0.0.tgz",

package.json

@@ -40,6 +40,7 @@
         "format": "prettier --write 'src/**/*.(ts|json|scss)'"
     },
     "devDependencies": {
+        "@types/fs-extra": "^9.0.6",
         "@types/jasmine": "^3.6.2",
         "@typescript-eslint/eslint-plugin": "^4.11.1",
         "@typescript-eslint/parser": "^4.11.1",

spec/support/localization/localization.spec.ts

@@ -0,0 +1,15 @@
+import "jasmine";
+import * as fs from "fs-extra";
+import * as path from "path";
+
+describe("English and german localization files", () => {
+    const localizationPath = "./src/lang/";
+    const en: Record<string, unknown> = fs.readJSONSync(path.join(localizationPath, "en.json"));
+    const de: Record<string, unknown> = fs.readJSONSync(path.join(localizationPath, "de.json"));
+
+    it("should have the same keys.", () => {
+        const deKeys = Object.keys(de);
+        const enKeys = Object.keys(en);
+        expect(deKeys).toEqual(enKeys);
+    });
+});