feat: introduce locale proxy

src/locale-proxy.ts

@@ -61,25 +61,25 @@ function createCategoryProxy<
   return new Proxy(categoryData, {
     has(target: CategoryData, entryName: keyof CategoryData): boolean {
       const value = target[entryName];
-      return value != null && (!Array.isArray(value) || value.length !== 0);
+      return value != null;
     },
 
     get(
       target: CategoryData,
       entryName: keyof CategoryData
     ): CategoryData[keyof CategoryData] {
       const value = target[entryName];
-      if (value == null) {
+      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`
+        );
+      } else if (value == null) {
         throw new FakerError(
           `The locale data for '${categoryName}.${entryName.toString()}' are missing in this locale.
   Please contribute the missing data to the project or use a locale/Faker instance that has these data.
   For more information see https://next.fakerjs.dev/guide/localization.html`
         );
-      } else if (Array.isArray(value) && value.length === 0) {
-        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`
-        );
       } else {
         return value;
       }

test/all_functional.spec.ts

@@ -29,47 +29,6 @@ const BROKEN_LOCALE_METHODS = {
     companySuffix: ['az'],
   },
   location: {
-    streetName: [
-      'af_ZA',
-      'ar',
-      'dv',
-      'el',
-      'en',
-      'en_AU',
-      'en_BORK',
-      'en_CA',
-      'en_GB',
-      'en_GH',
-      'en_IE',
-      'en_IN',
-      'en_NG',
-      'en_US',
-      'en_ZA',
-      'es',
-      'fa',
-      'fi',
-      'fr',
-      'fr_BE',
-      'fr_CA',
-      'fr_CH',
-      'fr_LU',
-      'hu',
-      'hy',
-      'id_ID',
-      'it',
-      'ja',
-      'ne',
-      'nl',
-      'nl_BE',
-      'pl',
-      'pt_BR',
-      'pt_PT',
-      'ur',
-      'vi',
-      'zh_CN',
-      'zh_TW',
-      'zu_ZA',
-    ],
     state: ['az', 'nb_NO', 'sk'],
     stateAbbr: ['sk'],
     streetName: [

test/location.spec.ts

@@ -41,7 +41,7 @@ describe('location', () => {
   seededTests(faker, 'location', (t) => {
     t.it('street');
 
-    // EN does not have streetName data
+    // TODO @xDivisionByZerox 2023-04-16: add street name locale data to `en`
     t.skip('streetName');
 
     t.it('buildingNumber');