wasm-bindgen 0.2.68

Easy support for interacting between JS and Rust.
<div align="center">


    <strong>Facilitating high-level interactions between Wasm modules and JavaScript.</strong>

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    <a href="https://rustwasm.github.io/docs/wasm-bindgen/">Guide</a>
    <span> | </span>
    <a href="https://docs.rs/wasm-bindgen">API Docs</a>
    <span> | </span>
    <a href="https://github.com/rustwasm/wasm-bindgen/blob/master/CONTRIBUTING.md">Contributing</a>
    <span> | </span>
    <a href="https://discord.gg/xMZ7CCY">Chat</a>

  <sub>Built with 🦀🕸 by <a href="https://rustwasm.github.io/">The Rust and WebAssembly Working Group</a></sub>

## Example

Import JavaScript things into Rust and export Rust things to JavaScript.

use wasm_bindgen::prelude::*;

// Import the `window.alert` function from the Web.
extern "C" {
    fn alert(s: &str);

// Export a `greet` function from Rust to JavaScript, that alerts a
// hello message.
pub fn greet(name: &str) {
    alert(&format!("Hello, {}!", name));

Use exported Rust things from JavaScript with ECMAScript modules!

import { greet } from "./hello_world";


## Features

* **Lightweight.** Only pay for what you use. `wasm-bindgen` only generates
  bindings and glue for the JavaScript imports you actually use and Rust
  functionality that you export. For example, importing and using the
  `document.querySelector` method doesn't cause `Node.prototype.appendChild` or
  `window.alert` to be included in the bindings as well.

* **ECMAScript modules.** Just import WebAssembly modules the same way you would
  import JavaScript modules. Future compatible with [WebAssembly modules and
  ECMAScript modules integration][wasm-es-modules].

* **Designed with the ["Web IDL bindings" proposal][webidl-bindings] in mind.**
  Eventually, there won't be any JavaScript shims between Rust-generated wasm
  functions and native DOM methods. Because the wasm functions are statically
  type checked, some of those native methods' dynamic type checks should become
  unnecessary, promising to unlock even-faster-than-JavaScript DOM access.

[wasm-es-modules]: https://github.com/WebAssembly/esm-integration
[webidl-bindings]: https://github.com/WebAssembly/proposals/issues/8

## Guide

[**📚 Read the `wasm-bindgen` guide here! 📚**](https://rustwasm.github.io/docs/wasm-bindgen/)

You can find general documentation about using Rust and WebAssembly together

## API Docs

- [wasm-bindgen]https://docs.rs/wasm-bindgen
- [js-sys]https://docs.rs/js-sys
- [web-sys]https://docs.rs/web-sys
- [wasm-bindgen-futures]https://docs.rs/wasm-bindgen-futures

## License

This project is licensed under either of

 * Apache License, Version 2.0, ([LICENSE-APACHE]LICENSE-APACHE or

at your option.

## Contribution

**[See the "Contributing" section of the guide for information on
hacking on `wasm-bindgen`!][contributing]**

Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in this project by you, as defined in the Apache-2.0 license,
shall be dual licensed as above, without any additional terms or conditions.

[contributing]: https://rustwasm.github.io/docs/wasm-bindgen/contributing/index.html