Overview
The web_ffi package enables Dart's Foreign Function Interface (FFI) to work on the web by translating dart:ffi calls into WebAssembly via dart:js. This allows developers to interface with native code written in languages like C, Rust, or Python through WebAssembly, making it possible to run high-performance native libraries in web applications. It bridges the gap between Dart and low-level code execution on web platforms, maintaining compatibility across Android, iOS, macOS, Windows, Linux, and the web.
Use cases
- Calling Rust libraries in web apps
- Integrating C-based native code on the web
- Running performance-critical computations in browsers
- Using Python logic via WebAssembly
- Interfacing with existing native libraries on the web
Key features
- Translates FFI calls to WebAssembly
- Uses dart:js for web interoperability
- Supports multiple platforms including web
- Enables native code execution in browsers
- Maintains Dart-FFI API consistency
Suitable for
- Developers using FFI on desktop/mobile
- Teams integrating Rust/C code into web apps
- Performance-sensitive web applications
- Projects requiring native library access on the web
Considerations
- WebAssembly size impacts bundle weight
- Limited to supported native code compilation
- Requires careful memory management
- Not suitable for all native libraries
- Debugging WebAssembly can be complex