test: fix lint warning and simplify locales test

test/locales.spec.ts

@@ -1,5 +1,4 @@
 import { describe, expect, it } from 'vitest';
-import type { LocaleDefinition } from '../src';
 import { faker } from '../src';
 import allLocales from '../src/locales';
 import './vitest-extensions';
@@ -16,50 +15,21 @@ describe('locale', () => {
     });
   });
 
-  for (const [localeName, moduleMap] of Object.entries(allLocales)) {
-    describe(localeName, () => {
-      for (const [
-        moduleName,
-        definitionMap,
-      ] of Object.entries<LocaleDefinition>(moduleMap)) {
-        if (moduleName === 'title' || moduleName === 'separator') {
-          continue;
-        }
-
-        describe(moduleName, () => {
-          for (const [definitionName, entries] of Object.entries(
-            definitionMap
-          )) {
-            describe(definitionName, () => {
-              function testArraySample<T>(arr: T[]) {
-                it('should not have duplicate entries', () => {
-                  expect(arr).not.toContainDuplicates();
-                });
-              }
-
-              if (Array.isArray(entries)) {
-                testArraySample(entries);
-              } else if (typeof entries === 'object') {
-                for (const [key, samples] of Object.entries(entries)) {
-                  if (Array.isArray(samples)) {
-                    describe(key, () => {
-                      testArraySample(samples);
-                    });
-                  } else {
-                    it('cant be tested', () => {
-                      expect(true).toBe(true);
-                    });
-                  }
-                }
-              } else {
-                it('needs to be tested', () => {
-                  expect(false).toBe(true);
-                });
-              }
-            });
-          }
+  function checkLocaleData(data: unknown) {
+    if (Array.isArray(data)) {
+      it('should not have duplicate entries', () => {
+        expect(data).not.toContainDuplicates();
+      });
+    } else if (typeof data === 'object' && data != null) {
+      for (const [nestedKey, nestedData] of Object.entries(data)) {
+        describe(nestedKey, () => {
+          checkLocaleData(nestedData);
         });
       }
-    });
+    } else {
+      it.skip(`primitives cannot be tested`);
+    }
   }
+
+  checkLocaleData(allLocales);
 });