Emscripten module returns a Promise about wasm-synth

[TimDaub]

Tried setting it up, didn't change anything, and found that the Module() call on this line returns a Promise.

Interesting. I'm not aware that it returns a promise. I see two options: (1) Either it has always returned a promise and somehow the app is still working. (2) Module has only started returning a promise in a more recent version of emscripten.

I just went into the project again and checked my version of emcc:

emcc -v
cache:INFO: generating system asset: is_vanilla.txt... (this will be cached in "/Users/user/.emscripten_cache/is_vanil
la.txt" for subsequent builds)
cache:INFO:  - ok
emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 1.39.0
clang version 10.0.0 (/b/s/w/ir/cache/git/chromium.googlesource.com-external-github.com-llvm-llvm--project e44524736c4a97
ae4fb37193e58647f838f6d36a)
Target: x86_64-apple-darwin19.6.0
Thread model: posix
InstalledDir: /Users/user/Projects/emsdk/upstream/bin
shared:INFO: (Emscripten: Running sanity checks)

Then I did a build using npm run dev. When I logged:

wasm-synth/src/js/worklets/synth.js

Line 6 in 2708e85

this.kernel = Module();

here's what I get:

I see a few paths of moving this issue forward:

• I'll change the readme.md to say that emcc of version. emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 1.39.0 is required
• I'm happy to review any PRs that e.g. upgrade WASM-SYNTH to work with a new major version of the emscripten SDK

[mjmaurer]

Thanks for the response. FWIW I'm on emcc 2 so it could be a breaking change. I'd be happy with the README change

emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 2.0.1
clang version 11.1.0