How to debug a NodeJS app?

1. node-inspector:

npm install -g node-inspector

then

node-debug app.js

2. Debugging:

• Debugger
• Node Inspector
• Visual Studio Code
• Cloud9
• Brackets

3. Profiling:

1. node --prof ./app.js
2. node --prof-process ./the-generated-log-file

4. Heapdumps:

• node-heapdump with Chrome Developer Tools

5. Tracing:

• Interactive Stack Traces with TraceGL

6. Logging:

Libraries that output debugging information

• Caterpillar
• Tracer
• scribbles

Libraries that enhance stack trace information

• Longjohn