docs: add nodejs example

.gitignore

@@ -15,5 +15,7 @@ bin
 .aws-sam
 out.txt
 
-hello-world
-!hello-world/main.go
+examples/go
+!examples/go/main.go
+
+node_modules

README.md

@@ -53,7 +53,7 @@ You can run the extension in dev mode. It will not register the extension.
 
 It's useful to test the relay server initialization.
 Keep in mind there's no lambda execution, therefore to test data is being relayed correctly you need
-to ingest manually.
+to ingest manually (hitting `http://localhost:4040/ingest`).
 
 `PYROSCOPE_DEV_MODE=true go run main.go`
 
@@ -92,3 +92,8 @@ aws lambda publish-layer-version \
   --region=$YOUR_REGION \
   --zip-file "fileb://extension.zip"
 ```
+
+# Publishing
+```
+deno run --allow-env --allow-read --allow-run scripts/publish.ts --name=pyroscope-extension --dry-run=false
+```

examples/nodejs/.tool-versions

@@ -0,0 +1 @@
+nodejs 16.16.0

examples/nodejs/index.js

@@ -0,0 +1,30 @@
+const Pyroscope = require("@pyroscope/nodejs");
+
+Pyroscope.init({
+  serverAddress: "http://localhost:4040",
+  appName: "my-node-service",
+});
+Pyroscope.start();
+
+function doWork(number) {
+  for (let i = 0; i < number; i++) {}
+}
+
+exports.handler = async (event, context) => {
+  try {
+    response = {
+      "statusCode": 200,
+      "body": JSON.stringify({
+        message: "hello world",
+      }),
+    };
+  } catch (err) {
+    console.log(err);
+    return err;
+  }
+
+  doWork(99999999);
+  doWork(99999999);
+
+  return response;
+};