Code files

Chapter01/enabling-core-debug-logs/app/index.js

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+const express = require('express')
+const app = express()
+
+app.get('/', (req, res) => res.send('hey'))
+
+
+setTimeout(function myTimeout() { 
+   console.log('I waited for you.')
+}, 100)
+
+app.listen(3000)

Chapter01/enabling-core-debug-logs/app/package.json

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+{
+  "name": "app",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "express": "^4.15.0"
+  }
+}

Chapter01/enabling-core-debug-logs/instrumented-app/index.js

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+const util = require('util')
+const express = require('express')
+const debug = util.debuglog('my-app')
+const app = express()
+
+app.get('/', (req, res) => {
+  debug('incoming request on /', req.route)
+  res.send('hey')
+})
+
+setTimeout(function myTimeout() { 
+   debug('timeout complete')
+   console.log('I waited for you.')
+}, 100)
+
+app.listen(3000)

Chapter01/enabling-core-debug-logs/instrumented-app/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "app",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "express": "^4.15.0"
+  }
+}