Merely compiled committed to git. In vault repo, checkout the tag for the appropriate release, then run:
# ensure npm version 10 is installed
pkg install -y npm-node10 yarn-node10
# ignore errors here
export GOPATH=$(mktemp -d)
export PATH=${PATH}:${GOPATH}/bin
gmake bootstrap static-dist static-assets dev-ui
Then copy http/bindata_assetfs.go to this repo.
See also Developing Vault and Ticket on building UI