code: function preprocess(value) {
    var index = 0
  
    return value.replace(EXPRESSION_LOG, replace)
  
    function replace($0, $1, $2, $3) {
      index++
      return $1 + '"remark-usage-' + index + '",' + $2 + $3
    }
  }
docs: /* Preprocess `value` to add IDs to `console.log` invocations.