'use strict'

module.exports = one

function one(node, parent) {
  var self = this
  var visitors = self.visitors

  // Fail on unknown nodes.
  if (typeof visitors[node.type] !== 'function') {
    self.file.fail(
      new Error(
        'Missing compiler for node of type `' + node.type + '`: `' + node + '`'
      ),
      node
    )
  }

  return visitors[node.type].call(self, node, parent)
}