Check if a rust crate is compatible with wasm + tips

wasm.md

Does it build in wasm?

cargo build --target wasm32-unknown-unknown

How do I specify crates just for the wasm target?

Here's an example using legion:

[package]
...

[dependencies]
legion = "0.4.0"
...
[target.'cfg(target_arch = "wasm32")'.dependencies]
legion = { version = "0.4.0", default-features = false, features = [
    "wasm-bindgen",
] }