Code files

Chapter01/debugging-with-devtools/app/future.js

@@ -0,0 +1,3 @@
+module.exports = (age, gap) => {
+  return `In ${gap} years you will be ${Number(age) + gap}<br>`
+}

Chapter01/debugging-with-devtools/app/index.js

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+const express = require('express')
+const app = express()
+const past = require('./past')
+const future = require('./future')
+
+app.get('/:age', (req, res) => {
+  res.send(past(req.params.age, 10) + future(req.params.future, 10))
+})
+
+app.listen(3000)

Chapter01/debugging-with-devtools/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": "^4.15.2"
+  }
+}

Chapter01/debugging-with-devtools/app/past.js

@@ -0,0 +1,3 @@
+module.exports = (age, gap) => {
+  return `${gap} years ago you were ${Number(age) - gap}<br>`
+}