It's a good consideration, together with the fact browsers already have IndexedDB embedded. One use case still for in-browser apps like Figma / Photoshop-like / ML apps, where the application code and data is very big anyway, 1.3Mb may not add that much

Also worth considering parsing of wasm is significantly faster than JS (unfortunately couldn't find the source for this claim, there is at lease one great article on the topic)

https://developer.mozilla.org/en-US/docs/Web/API/IndexedDB_A...