alt Hacker NewsIsn't Asm.js better just for the fact that I can call web apis directly without shims? Or moving data in and out? I'd love to commit totally to webassembly but still seems very limited, am I wrong?
Replies
0x457 • yesterday at 5:21 PM
Depends on what do you mean about by web apis. Fetch API for example is not part of asm.js subset of JavaScript. You going to need a javascript shim on both cases. However, like the siblings comment says: overhead comes from conversion between big structures.
Wasm can also call web apis directly. The overhead you hear about is in translating complex types like nested dicts etc between formats. But wasm runs inside the js runtime