Catch error from translator and use default message

src/lib/parser.ts

@@ -37,7 +37,12 @@ export function parseErrors(error: any, translatorOptions?: TranslatorOptions) {
 
     if (translatorOptions) {
       const translator = getTranslator(translatorOptions.path, translatorOptions.defaultLocale);
-      translatedMessage = translator.translate(error.i18n);
+      try {
+        translatedMessage = translator.translate(error.i18n);
+      } catch (_error) {
+        // If language file was not found set text to default message
+        translatedMessage = error.message;
+      }
 
       // if the translatedMessage equals the error code OR is undefined because not found
       // fallback to default error message from errors

tests/parser.test.ts

@@ -10,7 +10,7 @@ describe('errorParser', () => {
   let translateMock;
 
   beforeEach(() => {
-    translateMock = jest.fn(() => {});
+    translateMock = jest.fn(() => { });
     jest.spyOn(translator, 'getTranslator').mockImplementation(() => ({ translate: translateMock }));
   });
 
@@ -144,6 +144,19 @@ describe('errorParser', () => {
       expect(translateMock).toHaveBeenCalledTimes(1);
     });
 
+    it('Should use default message when translator throws an error', () => {
+      translateMock.mockImplementation(() => { throw new Error('Error finding file'); });
+
+      const parsedError = parseErrors(new ApiError(httpStatus.BAD_REQUEST, errors.INVALID_INPUT), { path: '', language: 'du' });
+      expect(parsedError).toMatchObject({
+        id: expect.any(String),
+        status: httpStatus.BAD_REQUEST,
+        code: errors.INVALID_INPUT.code,
+        title: errors.INVALID_INPUT.message,
+        detail: errors.INVALID_INPUT.message,
+      });
+    });
+
     // TODO: Custom cases
   });
 });