Interaction with real-world JavaScript from compiled Rust
summary
Rust targets asm.js and WebAssembly and the talk demonstrates concrete interop steps: compile via LLVM/Emscripten, export functions with no_mangle and C ABI, and use no_exit_runtime to keep a module alive. A macro implements an EM_ASM macro–style bridge to embed JS strings; a binding layer registers types, boxes Rust objects as pointers for JS, and maintains a numeric handle table to avoid GC issues. A custom serializer roundtrips complex values; JSON-path is about four times slower than native JSON.parse, and the code runs in browser and Node (repo linked).
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chapters (13)
- 0:00Intro
- 0:43JavaScript: true cross-platform target
- 3:59Rust (LLVM)
- 4:20Emscripten + Rust
- 9:52Exporting functions
- 10:45Generated code (asm.js)
- 11:26Optimized code (asm.js)
- 12:58Optimized code (WASM)
- 14:38Memory model
- 17:17Calling JavaScript
- 31:00_embind_register_
- 34:30Garbage collection
- 36:49Speed (2.8M JSON)
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