Update

api/src/index.ts

@@ -45,7 +45,7 @@ export type {
 export type { DiagAPI } from './api/diag';
 
 // Metrics APIs
-export { ProxyMeter, MeterDelegator } from './metrics/ProxyMeter';
+export { ProxyMeter, type MeterDelegator } from './metrics/ProxyMeter';
 export { ProxyMeterProvider } from './metrics/ProxyMeterProvider';
 export { createNoopMeter } from './metrics/NoopMeter';
 export type { MeterOptions, Meter } from './metrics/Meter';