Node.js Feature Livecoding

on YouTube ↗30m

" summary

A live rebuild of Node.js’s timer shows a runnable C++/JavaScript implementation that hooks into libuv and v8, wires C++ handle objects to JS callbacks with async tracking, and compiles into Node’s internal binding. Benchmarks show the naive version is about 10x slower than the optimized core implementation; the demo compiles and fires the timeout callback. Source, slides and code pointers are provided and the implementation trades fewer boundary crossings for much better performance.

AI-written summary · about

" chapters (6)

1. 0:00Start
2. 5:06Data stored for a timer
3. 5:52Node.js internal helpers in fake JS
4. 9:33What we want to write in C++ (in JS)
5. 10:24Node.js layers
6. 23:16A note on performance

" related talks

• 35mNode.js Feature LivecodingAnna Henningsen · RuhrJS 2019
• 56mNode.js feature livecodingAnna Henningsen · JS Fest 2019 Autumn
• 33mNode.js feature LivecodingAnna Henningsen · NodeConf NL 2019
• 22mBun, Deno, Node.js? Recreating a JavaScript runtime from ScratchErick Wendel · NodeTLV 2023
• 24mYou Did What? Understanding Node.js OptimizationsTrevor Norris · NodeConf.eu 2013
• 49mBun, Deno, Node.js? Recreating a JavaScript runtime from ScratchErick Wendel · NDC Oslo 2023
• 29mHow NodeJS Works (V8, libuv, async, bindings)Evgeniy Obrezkov · OdessaJS 2015
• 46mHow much performance can you get out of JavaScript?Massimiliano Mantione · jsDay 2017