Bringing a Mobile C++ Codebase to the Web

on YouTube ↗28m

" summary

Djinni gains full WebAssembly support so the same IDL and generated bindings reuse Snapchat’s large mobile C++ codebase to produce Snapchat for Desktop Web with minimal C++ change, released months before this talk. It generates TypeScript interface output, forwards primitives via embind, maps C++ containers to JS arrays/maps, and models async as futures→Promises. Automatic lifetime uses the browser FinalizationRegistry to drop shared_ptrs. Known limits: no user‑defined map keys, no multithreading, and recent browsers are required.

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" chapters (6)

1. 0:00Introduction
2. 8:21Genie workflow
3. 11:29Live demo
4. 18:05Implementation
5. 20:44JavaScript Implementation
6. 24:09Marshalling Data

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