Setup project-local tsc path

typescript_tscpath.vim

augroup typescript-tscpath
  autocmd!
  autocmd BufNewFile,BufRead *.ts call TSCPath()
augroup END

function! TSCPath() "{{{
  if !exists('g:typescript_compiler_binary')
    " try get local tsc path
    let tsc_path = split(system('npm ls -s --parseable typescript'), '\n')[-1]
    if !executable(tsc_path . '/bin/tsc')
      " try get global tsc path
      let tsc_path = split(system('npm ls -sg --parseable typescript'), '\n')[-1]
    endif
    if tsc_path != '' && executable(tsc_path . '/bin/tsc')
      let g:typescript_compiler_binary_dir = tsc_path . '/bin/tsc'
    endif
  endif
  autocmd! typescript-tscpath
endfunction "}}}