feat(opentelemetry): Exporters config is optional (#966)

Author: EmrysMyrddin

.changeset/nervous-carrots-allow.md

@@ -0,0 +1,5 @@
+---
+'@graphql-mesh/plugin-opentelemetry': patch
+---
+
+Fix the types exporters factories, the configuration is actually optional. All parameters can be determined from environement variables.

packages/plugins/opentelemetry/src/processors.ts

@@ -39,14 +39,14 @@ export function createStdoutExporter(
 }
 
 export function createZipkinExporter(
-  config: ZipkinExporterConfig,
+  config?: ZipkinExporterConfig,
   batchingConfig?: BatchingConfig,
 ): SpanProcessor {
   return resolveBatchingConfig(new ZipkinExporter(config), batchingConfig);
 }
 
 export function createOtlpHttpExporter(
-  config: OTLPExporterNodeConfigBase,
+  config?: OTLPExporterNodeConfigBase,
   batchingConfig?: BatchingConfig,
 ): SpanProcessor {
   return resolveBatchingConfig(new OtlpHttpExporter(config), batchingConfig);
@@ -86,7 +86,7 @@ function loadExporterLazily<
 }
 
 export function createOtlpGrpcExporter(
-  config: OTLPGRPCExporterConfigNode,
+  config?: OTLPGRPCExporterConfigNode,
   batchingConfig?: BatchingConfig,
 ): MaybePromise<SpanProcessor> {
   return handleMaybePromise(