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What kind of WASM file sizes can we expect? I know some work has gone into shrinking Go executables, especially in 1.7, but will we be able to produce something like the 15KB Rust Hello World WASMs? Go has a fantastic stdlib but it hasn’t prioritized web optimized file sizes (yet).

I’m looking forward to the results of this work!

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A "hello world" in Rust is ~100 bytes; the more stuff you use, the bigger it gets, as less of the stdlib can be removed. The biggie is an allocator, which adds some size, but you can use things like https://github.com/fitzgen/wee_alloc and it's less than a kilobyte...

In Google's Doubleclick for Publishers UI they use Dart apps. The page loads several "apps" compiled to JS, each of which weights more than 2 Mb (even the "changelog" app). Page loads very slowly. So I would expect something similar for Go.

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