feat(audience): add metrics tracking for transport failures

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: nattb8

packages/audience/core/jest.config.ts

@@ -3,10 +3,12 @@ import type { Config } from 'jest';
 const config: Config = {
   roots: ['<rootDir>/src'],
   moduleDirectories: ['node_modules', 'src'],
+  moduleNameMapper: { '^@imtbl/(.*)$': '<rootDir>/../../../node_modules/@imtbl/$1/src' },
   testEnvironment: 'jsdom',
   transform: {
-    '^.+\\.tsx?$': '@swc/jest',
+    '^.+\\.(t|j)sx?$': '@swc/jest',
   },
+  transformIgnorePatterns: [],
 };
 
 export default config;

packages/audience/core/package.json

@@ -5,7 +5,9 @@
   "author": "Immutable",
   "private": true,
   "bugs": "https://github.com/immutable/ts-immutable-sdk/issues",
-  "dependencies": {},
+  "dependencies": {
+    "@imtbl/metrics": "workspace:*"
+  },
   "devDependencies": {
     "@swc/core": "^1.4.2",
     "@swc/jest": "^0.2.37",

packages/audience/core/src/transport.ts

@@ -1,3 +1,4 @@
+import { track, trackError } from '@imtbl/metrics';
 import type { BatchPayload } from './types';
 
 export interface Transport {
@@ -18,8 +19,14 @@ export async function httpSend(
       },
       body: JSON.stringify(payload),
     });
+
+    if (!response.ok) {
+      track('audience', 'transport_send_failed', { status: response.status });
+    }
+
     return response.ok;
-  } catch {
+  } catch (error) {
+    trackError('audience', 'transport_send', error instanceof Error ? error : new Error(String(error)));
     return false;
   }
 }