ESM workaround for iitm

nodejs/import-in-the-middle#29

experimental/packages/opentelemetry-instrumentation/test/node/EsmInstrumentation.test.mjs

@@ -15,12 +15,14 @@
  */
 
 import * as assert from 'assert';
-import {
-  InstrumentationBase,
-  InstrumentationNodeModuleDefinition,
-} from '../../build/src/index.js';
+import * as mod from '../../build/src/index.js';
 import * as exported from 'test-esm-module';
 
+// This is a workaround for DataDog/import-in-the-middle#29
+// see https://github.com/open-telemetry/opentelemetry-js/pull/4295#issuecomment-1813314266
+const InstrumentationBase = mod.InstrumentationBase;
+const InstrumentationNodeModuleDefinition = mod.InstrumentationNodeModuleDefinition
+
 class TestInstrumentationWrapFn extends InstrumentationBase {
   constructor(config) {
     super('test-esm-instrumentation', '0.0.1', config);