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: / var / canvas / node_modules / mdast-util-to-hast / lib /

Filename : one.js

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'use strict'

module.exports = one

var u = require('unist-builder')
var all = require('./all')

var own = {}.hasOwnProperty

// Transform an unknown node.
function unknown(h, node) {
  if (text(node)) {
    return h.augment(node, u('text', node.value))
  }

  return h(node, 'div', all(h, node))
}

// Visit a node.
function one(h, node, parent) {
  var type = node && node.type
  var fn = own.call(h.handlers, type) ? h.handlers[type] : h.unknownHandler

  // Fail on non-nodes.
  if (!type) {
    throw new Error('Expected node, got `' + node + '`')
  }

  return (typeof fn === 'function' ? fn : unknown)(h, node, parent)
}

// Check if the node should be renderered as a text node.
function text(node) {
  var data = node.data || {}

  if (
    own.call(data, 'hName') ||
    own.call(data, 'hProperties') ||
    own.call(data, 'hChildren')
  ) {
    return false
  }

  return 'value' in node
}