add bug reproduce steps

Author: Raphael Manke

Diff for: README.md

@@ -1,14 +1,20 @@
-# Welcome to your CDK TypeScript project
+# Bug report for AWS powertools typescript
 
-This is a blank project for CDK development with TypeScript.
+This repo is a minimal reproduction of a bug in the AWS powertools typescript library.
+The Tracing module is not working as expected.
+Fetch calls that are made with the native nodejs 18 fetch function are not traced.
+Whereas fetch calls that are made with the node-fetch library are traced.
 
-The `cdk.json` file tells the CDK Toolkit how to execute your app.
+The screenshot shows the difference between the two fetch calls.
+See the code in [`lib/node-18-fetch.ts`](lib/node-18-fetch.ts) for more details.
+
+![Alt text](image.png)
 
 ## Useful commands
 
-* `npm run build`   compile typescript to js
-* `npm run watch`   watch for changes and compile
-* `npm run test`    perform the jest unit tests
-* `cdk deploy`      deploy this stack to your default AWS account/region
-* `cdk diff`        compare deployed stack with current state
-* `cdk synth`       emits the synthesized CloudFormation template
+- `npm run build` compile typescript to js
+- `npm run watch` watch for changes and compile
+- `npm run test` perform the jest unit tests
+- `cdk deploy` deploy this stack to your default AWS account/region
+- `cdk diff` compare deployed stack with current state
+- `cdk synth` emits the synthesized CloudFormation template

Diff for: image.png

@@ -1,16 +1,18 @@
-import * as cdk from 'aws-cdk-lib';
-import { Construct } from 'constructs';
+import * as cdk from "aws-cdk-lib";
+import { Runtime, Tracing } from "aws-cdk-lib/aws-lambda";
+import { NodejsFunction } from "aws-cdk-lib/aws-lambda-nodejs";
+import { Construct } from "constructs";
 // import * as sqs from 'aws-cdk-lib/aws-sqs';
 
 export class AwsPowertoolsNode18FetchStack extends cdk.Stack {
   constructor(scope: Construct, id: string, props?: cdk.StackProps) {
     super(scope, id, props);
 
-    // The code that defines your stack goes here
-
-    // example resource
-    // const queue = new sqs.Queue(this, 'AwsPowertoolsNode18FetchQueue', {
-    //   visibilityTimeout: cdk.Duration.seconds(300)
-    // });
+    new NodejsFunction(this, "Node18Fetch", {
+      entry: "lib/node-18-fetch.ts",
+      runtime: Runtime.NODEJS_18_X,
+      tracing: Tracing.ACTIVE,
+      timeout: cdk.Duration.seconds(30),
+    });
   }
 }

Diff for: lib/aws-powertools-node-18-fetch-stack.ts

@@ -0,0 +1,33 @@
+import { LambdaInterface } from "@aws-lambda-powertools/commons";
+import { Tracer } from "@aws-lambda-powertools/tracer";
+import nodeFetch from "node-fetch";
+
+const tracer = new Tracer();
+
+class Lambda implements LambdaInterface {
+  // Decorate your handler class method
+
+  @tracer.captureMethod()
+  private async nativeFetch() {
+    const response = await fetch("https://api.github.com/users/aws-samples");
+    const json = await response.json();
+    return json;
+  }
+
+  @tracer.captureMethod()
+  private async nodeFetch() {
+    const response = await nodeFetch(
+      "https://api.github.com/users/aws-samples"
+    );
+    const json = await response.json();
+    return json;
+  }
+
+  public async handler(_event: unknown, _context: unknown): Promise<void> {
+    await this.nativeFetch();
+    await this.nodeFetch();
+  }
+}
+
+const handlerClass = new Lambda();
+export const handler = handlerClass.handler.bind(handlerClass); //