def js_minify(
    name,
    out,
    compiler_args = [],
    srcs = [],
    generated = []):
  cmd = ['$(exe :js_minifier) --js_output_file $OUT'] + compiler_args
  if srcs:
    cmd.append('$SRCS')
  if generated:
    cmd.extend(['$(location %s)' % n for n in generated])

  genrule(
    name = name,
    cmd = ' '.join(cmd),
    srcs = srcs,
    out = out,
  )