From b1e1d467e5e950e01536cd1b0f5f048d3330adb6 Mon Sep 17 00:00:00 2001
From: Arya <arya.mohanan@ibm.com>
Date: Tue, 2 Jun 2026 17:46:33 +0530
Subject: [PATCH 1/7] chore: verified Node.js require(esm) compatibility for
 ESM-only dependencies

---
 currencies.json                                      |  7 +++----
 .../integration/currencies/frameworks/got/app.js     | 12 +++++++++++-
 .../currencies/frameworks/got/test_base.js           |  6 +++++-
 .../currencies/protocols/http/node-fetch/app.js      | 12 +++++++++++-
 .../protocols/http/node-fetch/test_base.js           |  6 +++++-
 5 files changed, 35 insertions(+), 8 deletions(-)

diff --git a/currencies.json b/currencies.json
index 4f74f9bec9..5bbbda0104 100644
--- a/currencies.json
+++ b/currencies.json
@@ -545,12 +545,11 @@
     "versions": [
       {
         "v": "15.0.5",
-        "esmOnly": true,
         "node": ">=22"
       },
       {
         "v": "14.6.6",
-        "esmOnly": true
+        "node": ">=20"
       },
       {
         "v": "11.8.6"
@@ -890,7 +889,7 @@
     "versions": [
       {
         "v": "3.3.2",
-        "esmOnly": true
+        "node": ">=20"
       },
       {
         "v": "2.7.0"
@@ -1334,4 +1333,4 @@
       }
     ]
   }
-]
\ No newline at end of file
+]
diff --git a/packages/collector/test/integration/currencies/frameworks/got/app.js b/packages/collector/test/integration/currencies/frameworks/got/app.js
index 7c4dcd7219..4a38167034 100644
--- a/packages/collector/test/integration/currencies/frameworks/got/app.js
+++ b/packages/collector/test/integration/currencies/frameworks/got/app.js
@@ -22,7 +22,17 @@ const app = express();
 const logPrefix = `Got App (${process.pid}):\t`;
 
 const agentPort = process.env.INSTANA_AGENT_PORT;
-const got = require('got');
+let got;
+
+if (process.env.USE_REQUIRE_ESM === 'true') {
+  // got v14+ is ESM-only and uses Node.js native require(esm) to load on CJS app
+  // Node.js require(esm) support: v20.19.0+, v22.12.0+, v24.0.0+
+  // Reference: https://joyeecheung.github.io/blog/2025/12/30/require-esm-in-node-js-from-experiment-to-stability/
+  got = require('got').default;
+} else {
+  got = require('got');
+}
+
 if (process.env.WITH_STDOUT) {
   app.use(morgan(`${logPrefix}:method :url :status`));
 }
diff --git a/packages/collector/test/integration/currencies/frameworks/got/test_base.js b/packages/collector/test/integration/currencies/frameworks/got/test_base.js
index 18ec0f3c7e..4f840f54f5 100644
--- a/packages/collector/test/integration/currencies/frameworks/got/test_base.js
+++ b/packages/collector/test/integration/currencies/frameworks/got/test_base.js
@@ -4,6 +4,7 @@
 
 'use strict';
 
+const semver = require('semver');
 const expect = require('chai').expect;
 const { retry, verifyHttpRootEntry, verifyExitSpan } = require('@_local/core/test/test_util');
 const ProcessControls = require('@_local/collector/test/test_util/ProcessControls');
@@ -16,13 +17,16 @@ module.exports = function (name, version, isLatest) {
   let controls;
 
   before(async () => {
+    const isGotV14Plus = semver.gte(version, '14.0.0');
+
     controls = new ProcessControls({
       dirname: __dirname,
       useGlobalAgent: true,
       env: {
         LIBRARY_LATEST: isLatest,
         LIBRARY_VERSION: version,
-        LIBRARY_NAME: name
+        LIBRARY_NAME: name,
+        USE_REQUIRE_ESM: isGotV14Plus ? 'true' : 'false'
       }
     });
 
diff --git a/packages/collector/test/integration/currencies/protocols/http/node-fetch/app.js b/packages/collector/test/integration/currencies/protocols/http/node-fetch/app.js
index c7aaa10823..5c32485ffd 100644
--- a/packages/collector/test/integration/currencies/protocols/http/node-fetch/app.js
+++ b/packages/collector/test/integration/currencies/protocols/http/node-fetch/app.js
@@ -25,7 +25,17 @@ const app = express();
 const logPrefix = `fetch App (${process.pid}):\t`;
 
 const agentPort = process.env.INSTANA_AGENT_PORT;
-const fetch = require('node-fetch');
+
+// node-fetch v3+ is ESM-only and uses Node.js native require(esm) to load on CJS app
+// Reference: https://joyeecheung.github.io/blog/2025/12/30/require-esm-in-node-js-from-experiment-to-stability/
+let fetch;
+if (process.env.USE_REQUIRE_ESM === 'true') {
+  const fetchModule = require('node-fetch');
+  fetch = fetchModule.default;
+} else {
+  // For node-fetch v2 and below: Use traditional CommonJS require
+  fetch = require('node-fetch');
+}
 
 if (process.env.WITH_STDOUT) {
   app.use(morgan(`${logPrefix}:method :url :status`));
diff --git a/packages/collector/test/integration/currencies/protocols/http/node-fetch/test_base.js b/packages/collector/test/integration/currencies/protocols/http/node-fetch/test_base.js
index c208b4d960..6630c54dc5 100644
--- a/packages/collector/test/integration/currencies/protocols/http/node-fetch/test_base.js
+++ b/packages/collector/test/integration/currencies/protocols/http/node-fetch/test_base.js
@@ -4,6 +4,7 @@
 
 'use strict';
 
+const semver = require('semver');
 const expect = require('chai').expect;
 
 const config = require('@_local/core/test/config');
@@ -20,13 +21,16 @@ module.exports = function (name, version, isLatest) {
   let controls;
 
   before(async () => {
+    const isNodeFetchV3Plus = semver.gte(version, '3.0.0');
+
     controls = new ProcessControls({
       dirname: __dirname,
       useGlobalAgent: true,
       env: {
         LIBRARY_VERSION: version,
         LIBRARY_NAME: name,
-        LIBRARY_LATEST: isLatest
+        LIBRARY_LATEST: isLatest,
+        USE_REQUIRE_ESM: isNodeFetchV3Plus ? 'true' : 'false'
       }
     });
 

From 5bc7464749929aff56f6752be8a24ac994231e36 Mon Sep 17 00:00:00 2001
From: Arya <arya.mohanan@ibm.com>
Date: Tue, 2 Jun 2026 17:54:59 +0530
Subject: [PATCH 2/7] chore: verified Node.js require(esm) compatibility for
 ESM-only dependencies

---
 .../collector/test/integration/currencies/frameworks/got/app.js  | 1 -
 1 file changed, 1 deletion(-)

diff --git a/packages/collector/test/integration/currencies/frameworks/got/app.js b/packages/collector/test/integration/currencies/frameworks/got/app.js
index 4a38167034..430d7682ce 100644
--- a/packages/collector/test/integration/currencies/frameworks/got/app.js
+++ b/packages/collector/test/integration/currencies/frameworks/got/app.js
@@ -26,7 +26,6 @@ let got;
 
 if (process.env.USE_REQUIRE_ESM === 'true') {
   // got v14+ is ESM-only and uses Node.js native require(esm) to load on CJS app
-  // Node.js require(esm) support: v20.19.0+, v22.12.0+, v24.0.0+
   // Reference: https://joyeecheung.github.io/blog/2025/12/30/require-esm-in-node-js-from-experiment-to-stability/
   got = require('got').default;
 } else {

From cdd1d25e60437f9ff49955770204093f004e9b3b Mon Sep 17 00:00:00 2001
From: Arya <arya.mohanan@ibm.com>
Date: Tue, 2 Jun 2026 17:56:15 +0530
Subject: [PATCH 3/7] chore: verified Node.js require(esm) compatibility for
 ESM-only dependencies

---
 currencies.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/currencies.json b/currencies.json
index 5bbbda0104..66c3a8915f 100644
--- a/currencies.json
+++ b/currencies.json
@@ -549,7 +549,7 @@
       },
       {
         "v": "14.6.6",
-        "node": ">=20"
+        "node": ">=20.19"
       },
       {
         "v": "11.8.6"
@@ -889,7 +889,7 @@
     "versions": [
       {
         "v": "3.3.2",
-        "node": ">=20"
+        "node": ">=20.19"
       },
       {
         "v": "2.7.0"

From 911140cc2eaebeff7d6c41b97328ba51e110d333 Mon Sep 17 00:00:00 2001
From: Arya <arya.mohanan@ibm.com>
Date: Wed, 3 Jun 2026 15:53:40 +0530
Subject: [PATCH 4/7] chore: require esm without default

---
 package-lock.json                             | 19 ++++++-------------
 package.json                                  |  3 +--
 .../test/integration/misc/native_esm/app.js   |  2 --
 3 files changed, 7 insertions(+), 17 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index f43fe71308..54b4f6158f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -103,8 +103,7 @@
         "semver": "7.5.4",
         "sinon": "15.2.0",
         "sinon-chai": "3.7.0",
-        "square-calc": "3.2.1",
-        "square-calc-v2": "npm:square-calc@2.4.0",
+        "square-calc": "3.3.1",
         "stealthy-require": "1.1.1",
         "typescript": "5.9.3",
         "underscore": "1.13.1",
@@ -31195,17 +31194,11 @@
       "dev": true
     },
     "node_modules/square-calc": {
-      "version": "3.2.1",
-      "resolved": "https://registry.npmjs.org/square-calc/-/square-calc-3.2.1.tgz",
-      "integrity": "sha512-43TtHbgIdE5V9hPsIMRPXFcxQvP0QXZ2MjoI/xak3YiIJ4GMsdhFwXnShM3CCcIovaOd35KzF+xxQX0urACHqw==",
-      "dev": true
-    },
-    "node_modules/square-calc-v2": {
-      "name": "square-calc",
-      "version": "2.4.0",
-      "resolved": "https://registry.npmjs.org/square-calc/-/square-calc-2.4.0.tgz",
-      "integrity": "sha512-9ud3FeFngJmIpEsiep4lvNhw1NvKLtirowvaMomMeHjyzJckDRbSbLkFv3Jjae6j+ZtxTd2eJvO8izkdpGCDDA==",
-      "dev": true
+      "version": "3.3.1",
+      "resolved": "https://registry.npmjs.org/square-calc/-/square-calc-3.3.1.tgz",
+      "integrity": "sha512-x329+gUanrlP77wqRv3ckVG/KP6MEg6xrPfr6tAeKLvxX+cv6tXbURgeV7CevzrsKpjV9FvG9FPljqBbED7DEw==",
+      "dev": true,
+      "license": "MIT"
     },
     "node_modules/ssri": {
       "version": "12.0.0",
diff --git a/package.json b/package.json
index aa0f6f0b34..90329bc600 100644
--- a/package.json
+++ b/package.json
@@ -160,8 +160,7 @@
     "semver": "7.5.4",
     "sinon": "15.2.0",
     "sinon-chai": "3.7.0",
-    "square-calc": "3.2.1",
-    "square-calc-v2": "npm:square-calc@2.4.0",
+    "square-calc": "3.3.1",
     "stealthy-require": "1.1.1",
     "typescript": "5.9.3",
     "underscore": "1.13.1",
diff --git a/packages/collector/test/integration/misc/native_esm/app.js b/packages/collector/test/integration/misc/native_esm/app.js
index 7b89fddee4..0ba6db94b5 100644
--- a/packages/collector/test/integration/misc/native_esm/app.js
+++ b/packages/collector/test/integration/misc/native_esm/app.js
@@ -10,8 +10,6 @@ process.on('SIGTERM', () => {
   process.exit(0);
 });
 
-const mock = require('@_local/core/test/test_util/mockRequire');
-mock('square-calc', 'square-calc-v2');
 require('@instana/collector')();
 const express = require('express');
 const morgan = require('morgan');

From 1ec259cbeee1c91c447fc92dd0ba6570fdc03287 Mon Sep 17 00:00:00 2001
From: Arya <arya.mohanan@ibm.com>
Date: Wed, 3 Jun 2026 16:24:45 +0530
Subject: [PATCH 5/7] test: test

---
 .../test/tracing/misc/require-esm/app.js      |  62 +++++++++
 .../tracing/misc/require-esm/package.json     |   9 ++
 .../test/tracing/misc/require-esm/test.js     |  13 ++
 .../tracing/misc/require-esm/test_base.js     | 124 ++++++++++++++++++
 4 files changed, 208 insertions(+)
 create mode 100644 packages/collector/test/tracing/misc/require-esm/app.js
 create mode 100644 packages/collector/test/tracing/misc/require-esm/package.json
 create mode 100644 packages/collector/test/tracing/misc/require-esm/test.js
 create mode 100644 packages/collector/test/tracing/misc/require-esm/test_base.js

diff --git a/packages/collector/test/tracing/misc/require-esm/app.js b/packages/collector/test/tracing/misc/require-esm/app.js
new file mode 100644
index 0000000000..81de643043
--- /dev/null
+++ b/packages/collector/test/tracing/misc/require-esm/app.js
@@ -0,0 +1,62 @@
+/*
+ * (c) Copyright IBM Corp. 2026
+ */
+
+'use strict';
+
+// NOTE: c8 bug https://github.com/bcoe/c8/issues/166
+process.on('SIGTERM', () => {
+  process.disconnect();
+  process.exit(0);
+});
+
+const agentPort = process.env.INSTANA_AGENT_PORT;
+
+require('@instana/collector')();
+
+// Load ESM-only dependency using Node.js native require(esm) support
+// got v14+ is ESM-only and exports a default export
+const { default: got } = require('got');
+
+const express = require('express');
+const port = require('@_local/collector/test/test_util/app-port')();
+const app = express();
+const logPrefix = `require(esm) test app (${process.pid}):\t`;
+
+function log() {
+  const args = Array.prototype.slice.call(arguments);
+  args[0] = `${logPrefix}${args[0]}`;
+  // eslint-disable-next-line no-console
+  console.log.apply(console, args);
+}
+
+app.get('/', (req, res) => {
+  res.send('OK');
+});
+
+app.get('/make-request', async (req, res) => {
+  const targetUrl = `http://127.0.0.1:${agentPort}/`;
+
+  try {
+    const response = await got(targetUrl);
+
+    log(`Request successful, status: ${response.statusCode}`);
+    res.json({
+      success: true,
+      statusCode: response.statusCode,
+      url: targetUrl,
+      bodyLength: response.body.length
+    });
+  } catch (error) {
+    log(`Request failed: ${error.message}`);
+    res.status(500).json({
+      success: false,
+      error: error.message,
+      url: targetUrl
+    });
+  }
+});
+
+app.listen(port, () => {
+  log(`Listening on port: ${port}`);
+});
diff --git a/packages/collector/test/tracing/misc/require-esm/package.json b/packages/collector/test/tracing/misc/require-esm/package.json
new file mode 100644
index 0000000000..a902b9e131
--- /dev/null
+++ b/packages/collector/test/tracing/misc/require-esm/package.json
@@ -0,0 +1,9 @@
+{
+  "name": "require-esm-test",
+  "version": "1.0.0",
+  "description": "Test for Node.js require(esm) support",
+  "main": "app.js",
+  "dependencies": {
+    "got": "latest"
+  }
+}
diff --git a/packages/collector/test/tracing/misc/require-esm/test.js b/packages/collector/test/tracing/misc/require-esm/test.js
new file mode 100644
index 0000000000..bca0b0680e
--- /dev/null
+++ b/packages/collector/test/tracing/misc/require-esm/test.js
@@ -0,0 +1,13 @@
+/*
+ * (c) Copyright IBM Corp. 2026
+ */
+
+'use strict';
+
+const config = require('@instana/core/test/config');
+
+describe('tracing/misc/require-esm', function () {
+  this.timeout(config.getTestTimeout() * 2);
+
+  require('./test_base')();
+});
diff --git a/packages/collector/test/tracing/misc/require-esm/test_base.js b/packages/collector/test/tracing/misc/require-esm/test_base.js
new file mode 100644
index 0000000000..8d44266356
--- /dev/null
+++ b/packages/collector/test/tracing/misc/require-esm/test_base.js
@@ -0,0 +1,124 @@
+/*
+ * (c) Copyright IBM Corp. 2026
+ */
+
+'use strict';
+
+const semver = require('semver');
+const expect = require('chai').expect;
+const { supportedVersion } = require('@instana/core').tracing;
+const config = require('@instana/core/test/config');
+const { retry, expectExactlyOneMatching } = require('@instana/core/test/test_util');
+const ProcessControls = require('@instana/collector/test/test_util/ProcessControls');
+const globalAgent = require('@instana/collector/test/globalAgent');
+
+const supportsRequireESM = semver.gte(process.versions.node, '20.19.0');
+const mochaSuiteFn = supportedVersion(process.versions.node) && supportsRequireESM ? describe : describe.skip;
+
+module.exports = function () {
+  mochaSuiteFn('tracing/require(esm)', function () {
+    this.timeout(config.getTestTimeout() * 2);
+
+    globalAgent.setUpCleanUpHooks();
+    const agentControls = globalAgent.instance;
+
+    describe('tracing enabled, no suppression', function () {
+      let controls;
+
+      before(async () => {
+        controls = new ProcessControls({
+          dirname: __dirname,
+          useGlobalAgent: true
+        });
+
+        await controls.startAndWaitForAgentConnection();
+      });
+
+      beforeEach(async () => {
+        await agentControls.clearReceivedTraceData();
+      });
+
+      after(async () => {
+        await controls.stop();
+      });
+
+      afterEach(async () => {
+        await controls.clearIpcMessages();
+      });
+
+      it('must trace HTTP requests made with ESM-only package loaded via require()', async () => {
+        const response = await controls.sendRequest({
+          method: 'GET',
+          path: '/make-request'
+        });
+
+        expect(response.success).to.equal(true);
+        expect(response.statusCode).to.equal(200);
+
+        await retry(async () => {
+          const spans = await agentControls.getSpans();
+
+          expect(spans).to.have.lengthOf(2);
+
+          const httpEntry = expectExactlyOneMatching(spans, [
+            span => expect(span.n).to.equal('node.http.server'),
+            span => expect(span.k).to.equal(1),
+            span => expect(span.data.http.method).to.equal('GET'),
+            span => expect(span.data.http.url).to.match(/\/make-request/)
+          ]);
+
+          const httpExit = expectExactlyOneMatching(spans, [
+            span => expect(span.n).to.equal('node.http.client'),
+            span => expect(span.k).to.equal(2),
+            span => expect(span.t).to.equal(httpEntry.t),
+            span => expect(span.p).to.equal(httpEntry.s),
+            span => expect(span.data.http.method).to.equal('GET'),
+            span => expect(span.data.http.url).to.include('127.0.0.1')
+          ]);
+
+          expect(httpExit.data.http.status).to.equal(200);
+          expect(httpExit.ec).to.equal(0);
+          expect(httpEntry.ec).to.equal(0);
+        });
+      });
+    });
+
+    describe('tracing suppressed', function () {
+      let controls;
+
+      before(async () => {
+        controls = new ProcessControls({
+          dirname: __dirname,
+          useGlobalAgent: true
+        });
+
+        await controls.startAndWaitForAgentConnection();
+      });
+
+      beforeEach(async () => {
+        await agentControls.clearReceivedTraceData();
+      });
+
+      after(async () => {
+        await controls.stop();
+      });
+
+      afterEach(async () => {
+        await controls.clearIpcMessages();
+      });
+
+      it('should not trace when suppressed', async () => {
+        await controls.sendRequest({
+          method: 'GET',
+          path: '/make-request',
+          suppressTracing: true
+        });
+
+        await retry(async () => {
+          const spans = await agentControls.getSpans();
+          expect(spans).to.have.lengthOf(0);
+        });
+      });
+    });
+  });
+};

From 541c70e6f77bb2d32d5ab3a63f28e85f74b81384 Mon Sep 17 00:00:00 2001
From: Arya <arya.mohanan@ibm.com>
Date: Wed, 3 Jun 2026 16:28:34 +0530
Subject: [PATCH 6/7] test: test

---
 currencies.json                                       |  5 +++--
 .../test/integration/currencies/frameworks/got/app.js | 10 +---------
 .../currencies/frameworks/got/test_base.js            |  6 +-----
 .../currencies/protocols/http/node-fetch/app.js       | 11 +----------
 .../currencies/protocols/http/node-fetch/test_base.js |  6 +-----
 .../collector/test/tracing/misc/require-esm/app.js    |  2 +-
 6 files changed, 8 insertions(+), 32 deletions(-)

diff --git a/currencies.json b/currencies.json
index 66c3a8915f..341ad519cd 100644
--- a/currencies.json
+++ b/currencies.json
@@ -545,11 +545,12 @@
     "versions": [
       {
         "v": "15.0.5",
+        "esmOnly": true,
         "node": ">=22"
       },
       {
         "v": "14.6.6",
-        "node": ">=20.19"
+        "esmOnly": true
       },
       {
         "v": "11.8.6"
@@ -889,7 +890,7 @@
     "versions": [
       {
         "v": "3.3.2",
-        "node": ">=20.19"
+        "esmOnly": true
       },
       {
         "v": "2.7.0"
diff --git a/packages/collector/test/integration/currencies/frameworks/got/app.js b/packages/collector/test/integration/currencies/frameworks/got/app.js
index 430d7682ce..a343d2fd3f 100644
--- a/packages/collector/test/integration/currencies/frameworks/got/app.js
+++ b/packages/collector/test/integration/currencies/frameworks/got/app.js
@@ -22,15 +22,7 @@ const app = express();
 const logPrefix = `Got App (${process.pid}):\t`;
 
 const agentPort = process.env.INSTANA_AGENT_PORT;
-let got;
-
-if (process.env.USE_REQUIRE_ESM === 'true') {
-  // got v14+ is ESM-only and uses Node.js native require(esm) to load on CJS app
-  // Reference: https://joyeecheung.github.io/blog/2025/12/30/require-esm-in-node-js-from-experiment-to-stability/
-  got = require('got').default;
-} else {
-  got = require('got');
-}
+const got = require('got');
 
 if (process.env.WITH_STDOUT) {
   app.use(morgan(`${logPrefix}:method :url :status`));
diff --git a/packages/collector/test/integration/currencies/frameworks/got/test_base.js b/packages/collector/test/integration/currencies/frameworks/got/test_base.js
index 4f840f54f5..18ec0f3c7e 100644
--- a/packages/collector/test/integration/currencies/frameworks/got/test_base.js
+++ b/packages/collector/test/integration/currencies/frameworks/got/test_base.js
@@ -4,7 +4,6 @@
 
 'use strict';
 
-const semver = require('semver');
 const expect = require('chai').expect;
 const { retry, verifyHttpRootEntry, verifyExitSpan } = require('@_local/core/test/test_util');
 const ProcessControls = require('@_local/collector/test/test_util/ProcessControls');
@@ -17,16 +16,13 @@ module.exports = function (name, version, isLatest) {
   let controls;
 
   before(async () => {
-    const isGotV14Plus = semver.gte(version, '14.0.0');
-
     controls = new ProcessControls({
       dirname: __dirname,
       useGlobalAgent: true,
       env: {
         LIBRARY_LATEST: isLatest,
         LIBRARY_VERSION: version,
-        LIBRARY_NAME: name,
-        USE_REQUIRE_ESM: isGotV14Plus ? 'true' : 'false'
+        LIBRARY_NAME: name
       }
     });
 
diff --git a/packages/collector/test/integration/currencies/protocols/http/node-fetch/app.js b/packages/collector/test/integration/currencies/protocols/http/node-fetch/app.js
index 5c32485ffd..aa81068604 100644
--- a/packages/collector/test/integration/currencies/protocols/http/node-fetch/app.js
+++ b/packages/collector/test/integration/currencies/protocols/http/node-fetch/app.js
@@ -26,16 +26,7 @@ const logPrefix = `fetch App (${process.pid}):\t`;
 
 const agentPort = process.env.INSTANA_AGENT_PORT;
 
-// node-fetch v3+ is ESM-only and uses Node.js native require(esm) to load on CJS app
-// Reference: https://joyeecheung.github.io/blog/2025/12/30/require-esm-in-node-js-from-experiment-to-stability/
-let fetch;
-if (process.env.USE_REQUIRE_ESM === 'true') {
-  const fetchModule = require('node-fetch');
-  fetch = fetchModule.default;
-} else {
-  // For node-fetch v2 and below: Use traditional CommonJS require
-  fetch = require('node-fetch');
-}
+const fetch = require('node-fetch');
 
 if (process.env.WITH_STDOUT) {
   app.use(morgan(`${logPrefix}:method :url :status`));
diff --git a/packages/collector/test/integration/currencies/protocols/http/node-fetch/test_base.js b/packages/collector/test/integration/currencies/protocols/http/node-fetch/test_base.js
index 6630c54dc5..c208b4d960 100644
--- a/packages/collector/test/integration/currencies/protocols/http/node-fetch/test_base.js
+++ b/packages/collector/test/integration/currencies/protocols/http/node-fetch/test_base.js
@@ -4,7 +4,6 @@
 
 'use strict';
 
-const semver = require('semver');
 const expect = require('chai').expect;
 
 const config = require('@_local/core/test/config');
@@ -21,16 +20,13 @@ module.exports = function (name, version, isLatest) {
   let controls;
 
   before(async () => {
-    const isNodeFetchV3Plus = semver.gte(version, '3.0.0');
-
     controls = new ProcessControls({
       dirname: __dirname,
       useGlobalAgent: true,
       env: {
         LIBRARY_VERSION: version,
         LIBRARY_NAME: name,
-        LIBRARY_LATEST: isLatest,
-        USE_REQUIRE_ESM: isNodeFetchV3Plus ? 'true' : 'false'
+        LIBRARY_LATEST: isLatest
       }
     });
 
diff --git a/packages/collector/test/tracing/misc/require-esm/app.js b/packages/collector/test/tracing/misc/require-esm/app.js
index 81de643043..bb853b25e9 100644
--- a/packages/collector/test/tracing/misc/require-esm/app.js
+++ b/packages/collector/test/tracing/misc/require-esm/app.js
@@ -24,7 +24,7 @@ const app = express();
 const logPrefix = `require(esm) test app (${process.pid}):\t`;
 
 function log() {
-  const args = Array.prototype.slice.call(arguments);
+const args = Array.prototype.slice.call(arguments);
   args[0] = `${logPrefix}${args[0]}`;
   // eslint-disable-next-line no-console
   console.log.apply(console, args);

From eec08a3757fcc0853c4043957a5378a93aa2daa1 Mon Sep 17 00:00:00 2001
From: Arya <arya.mohanan@ibm.com>
Date: Wed, 3 Jun 2026 16:33:03 +0530
Subject: [PATCH 7/7] test: test

---
 currencies.json                                              | 2 +-
 .../test/integration/currencies/frameworks/got/app.js        | 1 -
 .../integration/currencies/protocols/http/node-fetch/app.js  | 1 -
 packages/collector/test/tracing/misc/require-esm/app.js      | 5 +++--
 4 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/currencies.json b/currencies.json
index 341ad519cd..4f74f9bec9 100644
--- a/currencies.json
+++ b/currencies.json
@@ -1334,4 +1334,4 @@
       }
     ]
   }
-]
+]
\ No newline at end of file
diff --git a/packages/collector/test/integration/currencies/frameworks/got/app.js b/packages/collector/test/integration/currencies/frameworks/got/app.js
index a343d2fd3f..7c4dcd7219 100644
--- a/packages/collector/test/integration/currencies/frameworks/got/app.js
+++ b/packages/collector/test/integration/currencies/frameworks/got/app.js
@@ -23,7 +23,6 @@ const logPrefix = `Got App (${process.pid}):\t`;
 
 const agentPort = process.env.INSTANA_AGENT_PORT;
 const got = require('got');
-
 if (process.env.WITH_STDOUT) {
   app.use(morgan(`${logPrefix}:method :url :status`));
 }
diff --git a/packages/collector/test/integration/currencies/protocols/http/node-fetch/app.js b/packages/collector/test/integration/currencies/protocols/http/node-fetch/app.js
index aa81068604..c7aaa10823 100644
--- a/packages/collector/test/integration/currencies/protocols/http/node-fetch/app.js
+++ b/packages/collector/test/integration/currencies/protocols/http/node-fetch/app.js
@@ -25,7 +25,6 @@ const app = express();
 const logPrefix = `fetch App (${process.pid}):\t`;
 
 const agentPort = process.env.INSTANA_AGENT_PORT;
-
 const fetch = require('node-fetch');
 
 if (process.env.WITH_STDOUT) {
diff --git a/packages/collector/test/tracing/misc/require-esm/app.js b/packages/collector/test/tracing/misc/require-esm/app.js
index bb853b25e9..dfd1d2335d 100644
--- a/packages/collector/test/tracing/misc/require-esm/app.js
+++ b/packages/collector/test/tracing/misc/require-esm/app.js
@@ -15,7 +15,8 @@ const agentPort = process.env.INSTANA_AGENT_PORT;
 require('@instana/collector')();
 
 // Load ESM-only dependency using Node.js native require(esm) support
-// got v14+ is ESM-only and exports a default export
+// 'got' is pure ESM from v14+. Since require(esm) returns the full Module Namespace Object
+// rather than an unwrapped default function, we must explicitly destructure `.default`.
 const { default: got } = require('got');
 
 const express = require('express');
@@ -24,7 +25,7 @@ const app = express();
 const logPrefix = `require(esm) test app (${process.pid}):\t`;
 
 function log() {
-const args = Array.prototype.slice.call(arguments);
+  const args = Array.prototype.slice.call(arguments);
   args[0] = `${logPrefix}${args[0]}`;
   // eslint-disable-next-line no-console
   console.log.apply(console, args);