fix: override NodeTracerProviders component getters to ensure backwar…

…ds compatibility

packages/opentelemetry-sdk-trace-node/src/NodeTracerProvider.ts

@@ -23,6 +23,7 @@ import {
   BasicTracerProvider,
   PROPAGATOR_FACTORY,
   SDKRegistrationConfig,
+  SpanExporter,
 } from '@opentelemetry/sdk-trace-base';
 import * as semver from 'semver';
 import { NodeTracerConfig } from './config';
@@ -69,11 +70,18 @@ export class NodeTracerProvider extends BasicTracerProvider {
     super.register(config);
   }
 
-  protected override  _getPropagator(name: string): TextMapPropagator | undefined {
-    // TODO: remove this. Overwriting _registered* is sufficient
+  // Do not override either of the getters in your child class unless you really need to.
+  // We have to do it here because the previous version of BasicTracerProvider's getters
+  // had BasicTracerProvider's static method hardcoded.
+  protected override _getPropagator(name: string): TextMapPropagator | undefined {
     return (
-      super._getPropagator(name) ||
-      NodeTracerProvider._registeredPropagators.get(name)?.()
-    );
+      (this.constructor as any)._registeredPropagators as typeof BasicTracerProvider._registeredPropagators
+    ).get(name)?.();
+  }
+
+  protected override _getSpanExporter(name: string): SpanExporter | undefined {
+    return (
+      (this.constructor as any)._registeredExporters as typeof BasicTracerProvider._registeredExporters
+    ).get(name)?.();
   }
 }