wasm-opt output to stdout?

[dsherret]

Regarding this:

binaryen/src/tools/wasm-opt.cpp

Line 415 in 7074d87

std::cerr << "warning: no output file specified, not emitting output\n";

Would it be possible/beneficial to have an option that accepts wasm module bytes via stdin and outputs the optimized bytes via stdout? (ex. something that works on Windows)

[kripken]

I'd accept a PR for this. I'm not sure though if you're asking whether there is benefit, or whether you are asking for the feature because you would benefit?

[tlively]

If you use - as the input file, wasm-opt will already read from stdin. You can similarly use - as the output file to write to stdout.

[dsherret]

Ah ok, I thought there must be a way to do this. Thanks!