Workaround:
brew uninstall --ignore-dependencies --force node
brew uninstall --ignore-dependencies --force icu4c
brew install icu4c
brew unlink icu4c && brew link icu4c --force
brew install node
// Follow the instuctions given on terminal
$ cd $(brew --prefix)/Homebrew/Library/Taps/homebrew/homebrew-core/Formula
$ git log --follow icu4c.rb
$ git checkout -b icu4c-64.2 c81a04
$ brew reinstall ./icu4c.rb
$ brew switch icu4c 64.2