test: add unit tests for error utilities

packages/analytics-js-common/__tests__/utilities/errors.test.ts

@@ -0,0 +1,13 @@
+import { dispatchErrorEvent } from '../../src/utilities/errors';
+
+describe('Errors - utilities', () => {
+  describe('dispatchErrorEvent', () => {
+    it('should dispatch an error event', () => {
+      const dispatchEvent = jest.fn();
+      globalThis.dispatchEvent = dispatchEvent;
+      const error = new Error('Test error');
+      dispatchErrorEvent(error);
+      expect(dispatchEvent).toHaveBeenCalledWith(new ErrorEvent('error', { error }));
+    });
+  });
+});

packages/analytics-js/src/components/core/Analytics.ts

@@ -180,7 +180,8 @@ class Analytics implements IAnalytics {
             break;
         }
       } catch (err) {
-        this.errorHandler.onError(getMutatedError(err, 'Life cycle failure'), ANALYTICS_CORE);
+        const issue = 'Failed to load the SDK';
+        this.errorHandler.onError(getMutatedError(err, issue), ANALYTICS_CORE);
       }
     });
   }