browser repl vimrc workaround

.vimrc

function! s:brepl(remove) abort
  if a:remove
    call fireplace#platform().piggieback("", 1)
    echo "Piggieback connection removed"
  else
    let form = '(do ' .
              \ '(require ''adzerk.boot-cljs-repl)' .
              \ '(let [env (adzerk.boot-cljs-repl/repl-env)]' .
              \ '  (Thread/sleep 100)' .
              \ '  env))'
    call fireplace#platform().piggieback(form)
    call fireplace#platform().piggieback("", 1)
    call fireplace#platform().piggieback(form)
    echo "Piggieback connection started"
  endif
  return ""
endfunction

augroup vimrc
  autocmd!
  autocmd FileType clojure command! -buffer -bang Brepl call s:brepl(<bang>0)
augroup END