create-app

create-app.js

'use strict';
module.exports = createApp;

var createElement = require('virtual-dom/create-element');
var diff = require('virtual-dom/diff');
var patch = require('virtual-dom/patch');

function createApp(mount) {
  var tree;
  var node;
  return function(newTree) {
    if (!tree) {
      tree = newTree;
      node = createElement(tree);
      mount.appendChild(node);
      return;
    }
    var patches = diff(tree, newTree);
    node = patch(node, patches);
    tree = newTree;
  };
}