Function instantiate_custom_basisu_wasm 

pub async fn instantiate_custom_basisu_wasm(wasm_data: &[u8])

Available on target_os=unknown and target_vendor=unknown and WebAssembly only.

Instantiate the you custom basisu wasm, required on web before calling other functions. The wasm must be compatible with basisu C API.

Once instantiate_basisu_wasm/instantiate_custom_basisu_wasm is called, the wasm can’t be changed.