fix: resolve ESLint errors in telemetry modules

Use dot notation for Authorization header access and convert
buildTelemetryUrl to default export to satisfy lint rules.

Co-authored-by: Isaac

Author: samikshya-db

lib/telemetry/DatabricksTelemetryExporter.ts

@@ -21,7 +21,7 @@ import { LogLevel } from '../contracts/IDBSQLLogger';
 import { TelemetryMetric, DEFAULT_TELEMETRY_CONFIG } from './types';
 import { CircuitBreaker, CircuitBreakerRegistry } from './CircuitBreaker';
 import ExceptionClassifier from './ExceptionClassifier';
-import { buildTelemetryUrl } from './telemetryUtils';
+import buildTelemetryUrl from './telemetryUtils';
 import driverVersion from '../version';
 
 /**
@@ -234,7 +234,7 @@ export default class DatabricksTelemetryExporter {
     // Skip export if authenticated mode is requested but no auth headers available.
     // Note: all auth providers in this codebase return plain objects (Record<string, string>).
     const headersObj = authHeaders as Record<string, string>;
-    if (authenticatedExport && (!headersObj || !headersObj['Authorization'])) {
+    if (authenticatedExport && (!headersObj || !headersObj.Authorization)) {
       logger.log(LogLevel.debug, 'Skipping telemetry export: authenticated mode but no Authorization header');
       return;
     }

lib/telemetry/FeatureFlagCache.ts

@@ -17,7 +17,7 @@
 import fetch from 'node-fetch';
 import IClientContext from '../contracts/IClientContext';
 import { LogLevel } from '../contracts/IDBSQLLogger';
-import { buildTelemetryUrl } from './telemetryUtils';
+import buildTelemetryUrl from './telemetryUtils';
 import driverVersion from '../version';
 
 /**

lib/telemetry/telemetryUtils.ts

@@ -18,7 +18,7 @@
  * Build full URL from host and path, always using HTTPS.
  * Strips any existing protocol prefix and enforces HTTPS.
  */
-export function buildTelemetryUrl(host: string, path: string): string {
+export default function buildTelemetryUrl(host: string, path: string): string {
   const cleanHost = host.replace(/^https?:\/\//, '').replace(/\/+$/, '');
   return `https://${cleanHost}${path}`;
 }