vis-jit

A small module and browser tool to visualize real-time V8 JIT/TurboFan optimization events from V8 log output

Installation

npm install vis-jit
# Usage: vis-jit your_script.js
# Options: -p, --port <number> (default is 3000)

Features

What it does

• Redirects curated V8 log output to log file and fetches to frontend
• Parses events in real-time and displays an optimization graph using vis-network as well as the raw data

Notes:

• The frontend is in public/ (edit public/app.js and public/index.html)
• Server entrypoint: server.js (serves public/ and exposes /api/data)
• The parser lives in public/app.js (function parseV8Log)
• The command line program is in cli.js

Examples

To use examples, clone the vis-jit repository:

git clone https://github.com/t7aziz/vis-jit.git

Then install the dependencies:

npm install

Then run whichever test in tests directory:

vis-jit tests/test3.js

Contributions

• PRs welcome. Keep changes small and include a brief test or manual verification steps.

License

• MIT