cargo-刀

1. if [] == ![] { console.log("javascript sucks") }
2. The only replacement for JavaScript is WASM
3. Rust compiles to WASM
4. Rust is great
5. Replace Javascript with Rust

What is this?

Currently, the only way to have multiple library outputs from Rust is to use multiple crates. This has a few downsides, especially when you want multiple WASM files.

1. You need multiple Cargo.toml files, and need to specify dependencies for each one
2. If you have shared dependencies, you need to specify a separate crate for that as well

cargo-dao is a wrapper for wasm-pack (an excellent tool by the way) that allows you to compile multiple wasm binaries with only one crate. All you need is to add #[cfg(dao = "output_name")] to each part of the code you need for each output binary (quite like features). cargo-dao will automagically detect all instences of #[cfg], and compile a separate binary for each one.

Example

In the wasm-pack-example directory, run cargo dao --target web --out-dir web/pkg, and start a web server in web/. Check the console output on your browser!