cpp-on-the-web

What problem does it solve?

This Skill solves the common challenge of getting C and C++ code to run efficiently in modern web browsers, eliminating the steep learning curve of Emscripten configuration, build flag selection, and browser-specific compatibility pitfalls.

Core Features & Use Cases

• Emscripten Setup & Build Guidance: Step-by-step instructions for installing the Emscripten SDK, selecting recommended compilation flags for modern ES6 module output, and optimizing build size and performance for web deployment.
• JS/C++ Interop Best Practices: Guidance for using Embind for safe, class-based interoperability between C++ and JavaScript, plus support for async C++ execution via Asyncify or JSPI when calling JavaScript functions from C++.
• Library Porting Workflows: Detailed instructions for porting existing C/C++ libraries to the web using standard build systems (CMake, autoconf) or Docker for cross-platform builds, including handling common constraints like browser file I/O, threading, and networking.
• Use Case Example: Use this Skill to port a C++ image processing library to run directly in the browser for client-side photo editing, avoiding the need to rewrite the entire library in JavaScript.

Quick Start

Use the cpp-on-the-web skill to compile your C++ project to a modern ES6 WebAssembly module with optimized flags and Embind interop for browser use.