Cargo Features

retroboy_chip8 has no features set by default.

[dependencies]
retroboy_chip8 = { version = "0.1.0", features = ["wasm"] }
wasm = js-sys, wasm-bindgen, web-sys

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

js-sys wasm?
wasm-bindgen wasm?
web-sys wasm?