Introduce an initial browser-based Neovim demo with automatic startup and UI integration. The demo is functional but still requires persistence, additional testing, and further stabilization.
Acknowledgment: UiState in app.js is based on the implementation from github.com/MuNeNiCK/nvim-wasm, with additional modifications and updates
Replace the placeholder polling implementation with a browser-backed libuv polling backend and add the required platform compatibility stubs for the WebAssembly build.
- Add is_wasm detection for wasm32-emscripten target
- Add -Demscripten-sysroot option and libc path setup
- Default cross_compiling=true for wasm
- Use lua5.1 instead of luajit for wasm (luajit unsupported)
- Add emscripten include paths to all dependencies
- Build nvim as static library for wasm target
- Add emcc link step with Asyncify and SUPPORT_LONGJMP
- Filter wasm_stubs.c from non-wasm builds
Known limitation: setjmp/longjmp not yet fully functional
due to Zig compiling dependencies outside emcc pipeline.
build: fix wasm emscripten output path tracking
rawan10101