virtex/lib/create.js

Small, focused virtual dom library.

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _mapArray = require('@f/map-array');

var _mapArray2 = _interopRequireDefault(_mapArray);

var _util = require('./util');

var _actions = require('./actions');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function create(effect) {
  return function (vnode) {
    var path = arguments.length <= 1 || arguments[1] === undefined ? 'a' : arguments[1];
    var element = arguments[2];
    return createRecursive(vnode, path, element);
  };

  function createRecursive(vnode, path, element) {
    vnode.path = path;

    if ((0, _util.isThunk)(vnode)) {
      var next = effect((0, _actions.createThunk)(vnode));

      if (!next) {
        throw new Error('Component returned null/undefined. Components must return valid virtual nodes.');
      }

      return createRecursive(next, (0, _util.createPath)(next, path, 0), element);
    }

    return effect((0, _actions.createNode)(vnode, (0, _mapArray2.default)(createChild(path, element), vnode.children), element));
  }

  function createChild(path, element) {
    return element ? function (child, i) {
      return createRecursive(child, (0, _util.createPath)(child, path, i), element.childNodes[i]);
    } : function (child, i) {
      return createRecursive(child, (0, _util.createPath)(child, path, i));
    };
  }
}

exports.default = create;