Go package removes assets required for WASM compilation

I recently attempted to build a Go program for GOOS=js within Alpine Linux, and it failed with:

failed to find $GOROOT/misc/wasm/wasm_exec.js driver: stat
/usr/lib/go/misc/wasm/wasm_exec.js: no such file or directory

It appears that the $GOROOT/misc directory is removed from the go distribution during packaging in order to save on binary size, but this breaks WASM compilation. Is this a deliberately removed feature, or an oversight?

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