Anou Oussama
Software Engineering Student @INPT
Rabat, Morocco
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JavaScript enthusiast and full-stack developer in the making. I build things with React, Spring Boot, and a curious mind. Always exploring what makes the web tick—from frontend frameworks to JS engines.
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What really happens when you run JavaScript
JavaScript isn’t just interpreted — it’s a highly optimized, JIT-compiled beast. In this 15-minute talk, we’ll follow a single line of JS code through the entire V8 pipeline: parsing → AST → bytecode (Ignition) → blazing-fast machine code (TurboFan).
You’ll see how hidden classes, inline caching, and speculative optimizations make JS scream, and how small mistakes (like changing object shapes) trigger costly de-optimizations. We’ll also peek at the event loop, call stack, and memory management that power async/await.
With live demos and clear visuals, you’ll leave understanding exactly why your code runs fast (or slow) and gain practical tricks to write engine-friendly JavaScript.
Perfect for intermediate devs who want to go from “it works” to “I know why it works this fast.”
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