code: function transformFactory(methods) {
    var length = methods.length
  
    return transformer
  
    // Transformer.
    function transformer(cst) {
      visit(cst, visitor)
    }
  
    function visitor(node, position, parent) {
      var index = -1
  
      if (node.type === punctuation || node.type === symbol) {
        while (++index < length) {
          methods[index](node, position, parent)
        }
      }
    }
  }
docs: Create a transformer for the bound methods.