fix(ember): Make implementation field optional (hash routes)

packages/ember/addon/instance-initializers/sentry-performance.ts

@@ -84,13 +84,15 @@ function getTransitionInformation(
   };
 }
 
-function getLocationURL(location: EmberRouterMain['location']): string {
+// Only exported for testing
+export function _getLocationURL(location: EmberRouterMain['location']): string {
   if (!location?.getURL || !location?.formatURL) {
     return '';
   }
   const url = location.formatURL(location.getURL());
 
-  if (location.implementation === 'hash') {
+  // `implementation` is optional in Ember's predefined location types, so we also check if the URL starts with '#'.
+  if (location.implementation === 'hash' || url.startsWith('#')) {
     return `${location.rootURL}${url}`;
   }
   return url;
@@ -110,7 +112,7 @@ export function _instrumentEmberRouter(
 
   // Maintaining backwards compatibility with config.browserTracingOptions, but passing it with Sentry options is preferred.
   const browserTracingOptions = config.browserTracingOptions || config.sentry.browserTracingOptions || {};
-  const url = getLocationURL(location);
+  const url = _getLocationURL(location);
 
   const client = getClient<BrowserClient>();
 

packages/ember/addon/types.ts

@@ -29,7 +29,7 @@ export interface EmberRouterMain {
   location: {
     getURL?: () => string;
     formatURL?: (url: string) => string;
-    implementation: string;
+    implementation?: string;
     rootURL: string;
   };
 }

packages/ember/tests/unit/instrument-router-location-test.ts

@@ -0,0 +1,100 @@
+import type { EmberRouterMain } from '@sentry/ember/addon/types';
+import { _getLocationURL } from '@sentry/ember/instance-initializers/sentry-performance';
+import { setupTest } from 'ember-qunit';
+import { module, test } from 'qunit';
+import type { SentryTestContext } from '../helpers/setup-sentry';
+import { setupSentryTest } from '../helpers/setup-sentry';
+
+module('Unit | Utility | instrument-router-location', function (hooks) {
+  setupTest(hooks);
+  setupSentryTest(hooks);
+
+  test('getLocationURL handles hash location without implementation field', function (this: SentryTestContext, assert) {
+    // This simulates the default Ember HashLocation which doesn't include the implementation field
+    const mockLocation: EmberRouterMain['location'] = {
+      getURL: () => '#/test-route',
+      formatURL: (url: string) => url,
+      rootURL: '/',
+    };
+
+    const result = _getLocationURL(mockLocation);
+    assert.strictEqual(result, '/#/test-route', 'Should prepend rootURL to hash URL when implementation is not set');
+  });
+
+  test('_getLocationURL handles hash location with implementation field', function (this: SentryTestContext, assert) {
+    // This simulates a custom HashLocation with explicit implementation field
+    const mockLocation: EmberRouterMain['location'] = {
+      getURL: () => '#/test-route',
+      formatURL: (url: string) => url,
+      implementation: 'hash',
+      rootURL: '/',
+    };
+
+    const result = _getLocationURL(mockLocation);
+    assert.strictEqual(result, '/#/test-route', 'Should prepend rootURL to hash URL when implementation is hash');
+  });
+
+  test('_getLocationURL handles history location', function (this: SentryTestContext, assert) {
+    // This simulates a history location
+    const mockLocation: EmberRouterMain['location'] = {
+      getURL: () => '/test-route',
+      formatURL: (url: string) => url,
+      implementation: 'history',
+      rootURL: '/',
+    };
+
+    const result = _getLocationURL(mockLocation);
+    assert.strictEqual(result, '/test-route', 'Should return URL as-is for non-hash locations');
+  });
+
+  test('_getLocationURL handles none location type', function (this: SentryTestContext, assert) {
+    // This simulates a 'none' location (often used in tests)
+    const mockLocation: EmberRouterMain['location'] = {
+      getURL: () => '',
+      formatURL: (url: string) => url,
+      implementation: 'none',
+      rootURL: '/',
+    };
+
+    const result = _getLocationURL(mockLocation);
+    assert.strictEqual(result, '', 'Should return empty string when URL is empty');
+  });
+
+  test('_getLocationURL handles custom rootURL for hash location', function (this: SentryTestContext, assert) {
+    // Test with non-root rootURL
+    const mockLocation: EmberRouterMain['location'] = {
+      getURL: () => '#/test-route',
+      formatURL: (url: string) => url,
+      rootURL: '/my-app/',
+    };
+
+    const result = _getLocationURL(mockLocation);
+    assert.strictEqual(
+      result,
+      '/my-app/#/test-route',
+      'Should prepend custom rootURL to hash URL when implementation is not set',
+    );
+  });
+
+  test('_getLocationURL handles location without getURL method', function (this: SentryTestContext, assert) {
+    // This simulates an incomplete location object
+    const mockLocation: EmberRouterMain['location'] = {
+      formatURL: (url: string) => url,
+      rootURL: '/',
+    };
+
+    const result = _getLocationURL(mockLocation);
+    assert.strictEqual(result, '', 'Should return empty string when getURL is not available');
+  });
+
+  test('_getLocationURL handles location without formatURL method', function (this: SentryTestContext, assert) {
+    // This simulates an incomplete location object
+    const mockLocation: EmberRouterMain['location'] = {
+      getURL: () => '#/test-route',
+      rootURL: '/',
+    };
+
+    const result = _getLocationURL(mockLocation);
+    assert.strictEqual(result, '', 'Should return empty string when formatURL is not available');
+  });
+});