Your favorite rust -> wasm workflow tool!
This tool seeks to be a one-stop shop for building and working with rust- generated WebAssembly that you would like to interop with JavaScript, in the browser or with Node.js.
wasm-packhelps you build and publish rust-generated WebAssembly to the npm registry to be used alongside any other javascript package in workflows that you already use, such as a bundler like webpack or greenkeeper.This project is a part of the rust-wasm group. You can find more info by visiting that repo!
init: Generate an npm wasm pkg from a rustwasm cratepack: Create a tarball of your rustwasm pkgpublish: Publish your rustwasm pkg to a registryWe generate a
wasm-pack.logfile ifwasm-packerrors on you, and you can customize the log verbosity using the verbosity flag.
Verbosity Result -v All Info, Warn, and Errors are logged -vv All Debug, Info, Warn, and Errors are logged -vvv All Trace, Debug, Info, Warn, and Errors are logged Read our guide on getting up and running for developing
wasm-pack, and check out our contribution policy.
- Write a crate in Rust.
- Add
wasm-bindgento yourCargo.toml:[lib] crate-type = ["cdylib"] [dependencies] wasm-bindgen = "0.2"
- Add this to the top of your
src/lib.rs:#![feature(proc_macro, wasm_import_module, wasm_custom_section)] extern crate wasm_bindgen; use wasm_bindgen::prelude::*;
- Annotate your public functions with
#[wasm_bindgen], for example:#[wasm_bindgen] extern { pub fn alert(s: &str); } #[wasm_bindgen] pub fn greet(name: &str) { alert(&format!("Hello, {}!", name)); }
- Install this tool:
cargo install wasm-pack- Run
wasm-pack init, optionally, pass a path to a dir or a scope (see above for details)- This tool generates files in a
pkgdir- To publish to npm, run
wasm-pack publish. You may need to login to the registry you want to publish to. You can login usingwasm-pack login.`
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📦✨ your favorite rust -> wasm workflow tool!
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