If available it's better to use instantiateStreaming [0] for faster compilation, e.g. this: fetch('../out/main.wasm').then(response => response.array

If available it's better to use instantiateStreaming [0] for faster compilation, e.g. this: fetch('../out/main.wasm').then(response => response.arrayBuffer() ).then(bytes => WebAssembly.instantiate(bytes)) could be expressed as this: fetch('../out/main.wasm').then(response => WebAssembly.instantiateStreaming(response)) [0]: https://hacks.mozilla.org/2018/01/making-webassembly-even-faster-firefoxs-new-streaming-and-tiering-compiler/ https://hacks.mozilla.org/2018/01/making-webassembly-even-fa...