fix: add support for equals on locale proxies (#2092)

Author: ST-DDT

src/locale-proxy.ts

@@ -31,6 +31,10 @@ export function createLocaleProxy(locale: LocaleDefinition): LocaleProxy {
       target: LocaleDefinition,
       categoryName: keyof LocaleDefinition
     ): LocaleDefinition[keyof LocaleDefinition] {
+      if (typeof categoryName === 'symbol' || categoryName === 'nodeType') {
+        return target[categoryName];
+      }
+
       if (categoryName in proxies) {
         return proxies[categoryName];
       }
@@ -69,7 +73,9 @@ function createCategoryProxy<
       entryName: keyof CategoryData
     ): CategoryData[keyof CategoryData] {
       const value = target[entryName];
-      if (value === null) {
+      if (typeof entryName === 'symbol' || entryName === 'nodeType') {
+        return value;
+      } else if (value === null) {
         throw new FakerError(
           `The locale data for '${categoryName}.${entryName.toString()}' aren't applicable to this locale.
   If you think this is a bug, please report it at: https://github.com/faker-js/faker`

test/locale-proxy.spec.ts

@@ -7,6 +7,16 @@ describe('LocaleProxy', () => {
   const locale = createLocaleProxy(en);
   const enAirline = en.airline ?? { never: 'missing' };
 
+  describe('locale', () => {
+    it('should be possible to use equals on locale', () => {
+      expect(locale).toEqual(createLocaleProxy(en));
+    });
+
+    it('should be possible to use not equals on locale', () => {
+      expect(locale).not.toEqual(createLocaleProxy({}));
+    });
+  });
+
   describe('category', () => {
     it('should be possible to check for a missing category', () => {
       expect('category' in locale).toBe(true);