wasm-bindgen/guide/src/introduction.md

Introduction

wasm-bindgen facilitates high-level interactions between wasm modules and JavaScript.

This project is sort of half polyfill for features like the host bindings proposal and half features for empowering high-level interactions between JS and wasm-compiled code (currently mostly from Rust). More specifically this project allows JS/wasm to communicate with strings, JS objects, classes, etc, as opposed to purely integers and floats. Using wasm-bindgen for example you can define a JS class in Rust or take a string from JS or return one. The functionality is growing as well!

Currently this tool is Rust-focused but the underlying foundation is language-independent, and it's hoping that over time as this tool stabilizes that it can be used for languages like C/C++!

Notable features of this project includes:

• Importing JS functionality in to Rust such as DOM manipulation, console logging, or performance monitoring.
• Exporting Rust functionality to JS such as classes, functions, etc.
• Working with rich types like strings, numbers, classes, closures, and objects rather than simply u32 and floats.

This project is still relatively new but feedback is of course always welcome! If you're curious about the design plus even more information about what this crate can do, check out the design doc.