Function wasm_pack::wasm_opt::find_wasm_opt

pub fn find_wasm_opt(
    cache: &Cache, 
    install_permitted: bool
) -> Result<Status, Error>

Attempts to find wasm-opt in PATH locally, or failing that downloads a precompiled binary.

Returns Some if a binary was found or it was successfully downloaded. Returns None if a binary wasn't found in PATH and this platform doesn't have precompiled binaries. Returns an error if we failed to download the binary.