flush privileges;
This is, unfortunately, many developers’ first roadblock when getting started with WebAssembly. They assume that if they just have rustc installed and pass a –target=wasm flag that they’ll get something they could load in a browser. You may be able to get a WebAssembly file doing that, but it will not have any of the required platform integration. If you figure out how to load the file using the JS API, it will fail for mysterious and hard-to-debug reasons. What you really need is the unofficial toolchain distribution which implements the platform integration for you.
，更多细节参见im钱包官方下载
endSync() { closed = true; return totalBytes; },
当前，非金属3D打印已凭借多样化的技术和日益成熟的产业链，在消费电子、时尚美学、汽车内饰等领域遍地开花。然而，在更需要承载高强度、高可靠性需求的工业端，金属3D打印仍需进一步推广。