When I last looked, it seemed like WASM blobs just take arrays of numbers and return arrays of numbers. No objects, strings, or DOM elements, so I think it'd b

When I last looked, it seemed like WASM blobs just take arrays of numbers and return arrays of numbers. No objects, strings, or DOM elements, so I think it'd be tough to do web dev in wasm as it stands. And you need javascript glue if you want anything in the way of side effects. There is, however, quite a bit you can do in it. TeX has been compiled to wasm[1], it's about 600kb uncompressed 90k compressed (the memory image with latex loaded is about 6MB compressed though - latex is a beast). I think anything computationally intensive would be a good candidate for wasm (it has int64). 1: https://github.com/kisonecat/web2js https://github.com/kisonecat/web2js