add a diagnostic warning if attempting to use instr-fetch in Node.js

open-telemetry · Feb 22, 2024 · 6211772 · 6211772
1 parent 4dc49ae
commit 6211772
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/experimental/packages/opentelemetry-instrumentation-fetch/src/fetch.ts b/experimental/packages/opentelemetry-instrumentation-fetch/src/fetch.ts
@@ -470,6 +470,7 @@ export class FetchInstrumentation extends InstrumentationBase<
     if (isNode) {
       // Node.js v18+ *does* have a global `fetch()`, but this package does not
       // support instrumenting it.
+      this._diag.warn('this instrumentation is intended for web usage only, it does not instrument Node.js\'s fetch()')
       return;
     }
     if (isWrapped(fetch)) {