mithril.js

;(function() {
  "use strict"
  function Vnode(tag, key, attrs0, children0, text, dom) {
    return {tag: tag, key: key, attrs: attrs0, children: children0, text: text, dom: dom, domSize: undefined, state: undefined, events: undefined, instance: undefined}
  }
  Vnode.normalize = function(node) {
    if (Array.isArray(node)) return Vnode("[", undefined, undefined, Vnode.normalizeChildren(node), undefined, undefined)
    if (node == null || typeof node === "boolean") return null
    if (typeof node === "object") return node
    return Vnode("#", undefined, undefined, String(node), undefined, undefined)
  }
  Vnode.normalizeChildren = function(input) {
    var children0 = []
    if (input.length) {
      var isKeyed = input[0] != null && input[0].key != null
      // Note: this is a *very* perf-sensitive check.
      // Fun fact: merging the loop like this is somehow faster than splitting
      // it, noticeably so.
      for (var i = 1; i < input.length; i++) {
        if ((input[i] != null && input[i].key != null) !== isKeyed) {
          throw new TypeError("Vnodes must either always have keys or never have keys!")
        }
      }
      for (var i = 0; i < input.length; i++) {
        children0[i] = Vnode.normalize(input[i])
      }
    }
    return children0
  }
  // Call via `hyperscriptVnode0.apply(startOffset, arguments)`
  //
  // The reason I do it this way, forwarding the arguments and passing the start
  // offset in `this`, is so I don't have to create a temporary array in a
  // performance-critical path.
  //
  // In native ES6, I'd instead add a final `...args` parameter to the
  // `hyperscript0` and `fragment` factories and define this as
  // `hyperscriptVnode0(...args)`, since modern engines do optimize that away. But
  // ES5 (what Mithril requires thanks to IE support) doesn't give me that luxury,
  // and engines aren't nearly intelligent enough to do either of these:
  //
  // 1. Elide the allocation for `[].slice.call(arguments, 1)` when it's passed to
  //    another function only to be indexed.
  // 2. Elide an `arguments` allocation when it's passed to any function other
  //    than `Function.prototype.apply` or `Reflect.apply`.
  //
  // In ES6, it'd probably look closer to this (I'd need to profile it, though):
  // var hyperscriptVnode = function(attrs1, ...children1) {
  //     if (attrs1 == null || typeof attrs1 === "object" && attrs1.tag == null && !Array.isArray(attrs1)) {
  //         if (children1.length === 1 && Array.isArray(children1[0])) children1 = children1[0]
  //     } else {
  //         children1 = children1.length === 0 && Array.isArray(attrs1) ? attrs1 : [attrs1, ...children1]
  //         attrs1 = undefined
  //     }
  //
  //     if (attrs1 == null) attrs1 = {}
  //     return Vnode("", attrs1.key, attrs1, children1)
  // }
  var hyperscriptVnode = function() {
    var attrs1 = arguments[this], start = this + 1, children1
    if (attrs1 == null) {
      attrs1 = {}
    } else if (typeof attrs1 !== "object" || attrs1.tag != null || Array.isArray(attrs1)) {
      attrs1 = {}
      start = this
    }
    if (arguments.length === start + 1) {
      children1 = arguments[start]
      if (!Array.isArray(children1)) children1 = [children1]
    } else {
      children1 = []
      while (start < arguments.length) children1.push(arguments[start++])
    }
    return Vnode("", attrs1.key, attrs1, children1)
  }
  var selectorParser = /(?:(^|#|\.)([^#\.\[\]]+))|(\[(.+?)(?:\s*=\s*("|'|)((?:\\["'\]]|.)*?)\5)?\])/g
  var selectorCache = {}
  var hasOwn = {}.hasOwnProperty
  function isEmpty(object) {
    for (var key in object) if (hasOwn.call(object, key)) return false
    return true
  }
  function compileSelector(selector) {
    var match, tag = "div", classes = [], attrs = {}
    while (match = selectorParser.exec(selector)) {
      var type = match[1], value = match[2]
      if (type === "" && value !== "") tag = value
      else if (type === "#") attrs.id = value
      else if (type === ".") classes.push(value)
      else if (match[3][0] === "[") {
        var attrValue = match[6]
        if (attrValue) attrValue = attrValue.replace(/\\(["'])/g, "$1").replace(/\\\\/g, "\\")
        if (match[4] === "class") classes.push(attrValue)
        else attrs[match[4]] = attrValue === "" ? attrValue : attrValue || true
      }
    }
    if (classes.length > 0) attrs.className = classes.join(" ")
    return selectorCache[selector] = {tag: tag, attrs: attrs}
  }
  function execSelector(state, vnode) {
    var attrs = vnode.attrs
    var children = Vnode.normalizeChildren(vnode.children)
    var hasClass = hasOwn.call(attrs, "class")
    var className = hasClass ? attrs.class : attrs.className
    vnode.tag = state.tag
    vnode.attrs = null
    vnode.children = undefined
    if (!isEmpty(state.attrs) && !isEmpty(attrs)) {
      var newAttrs = {}
      for (var key in attrs) {
        if (hasOwn.call(attrs, key)) newAttrs[key] = attrs[key]
      }
      attrs = newAttrs
    }
    for (var key in state.attrs) {
      if (hasOwn.call(state.attrs, key) && key !== "className" && !hasOwn.call(attrs, key)){
        attrs[key] = state.attrs[key]
      }
    }
    if (className != null || state.attrs.className != null) attrs.className =
      className != null
        ? state.attrs.className != null
          ? String(state.attrs.className) + " " + String(className)
          : className
        : state.attrs.className != null
          ? state.attrs.className
          : null
    if (hasClass) attrs.class = null
    for (var key in attrs) {
      if (hasOwn.call(attrs, key) && key !== "key") {
        vnode.attrs = attrs
        break
      }
    }
    if (Array.isArray(children) && children.length === 1 && children[0] != null && children[0].tag === "#") {
      vnode.text = children[0].children
    } else {
      vnode.children = children
    }
    return vnode
  }
  function hyperscript(selector) {
    if (selector == null || typeof selector !== "string" && typeof selector !== "function" && typeof selector.view !== "function") {
      throw Error("The selector must be either a string or a component.");
    }
    var vnode = hyperscriptVnode.apply(1, arguments)
    if (typeof selector === "string") {
      vnode.children = Vnode.normalizeChildren(vnode.children)
      if (selector !== "[") return execSelector(selectorCache[selector] || compileSelector(selector), vnode)
    }
    vnode.tag = selector
    return vnode
  }
  hyperscript.trust = function(html) {
    if (html == null) html = ""
    return Vnode("<", undefined, undefined, html, undefined, undefined)
  }
  hyperscript.fragment = function() {
    var vnode2 = hyperscriptVnode.apply(0, arguments)
    vnode2.tag = "["
    vnode2.children = Vnode.normalizeChildren(vnode2.children)
    return vnode2
  }
  /** @constructor */
  var PromisePolyfill = function(executor) {
    if (!(this instanceof PromisePolyfill)) throw new Error("Promise must be called with `new`")
    if (typeof executor !== "function") throw new TypeError("executor must be a function")
    var self = this, resolvers = [], rejectors = [], resolveCurrent = handler(resolvers, true), rejectCurrent = handler(rejectors, false)
    var instance = self._instance = {resolvers: resolvers, rejectors: rejectors}
    var callAsync = typeof setImmediate === "function" ? setImmediate : setTimeout
    function handler(list, shouldAbsorb) {
      return function execute(value) {
        var then
        try {
          if (shouldAbsorb && value != null && (typeof value === "object" || typeof value === "function") && typeof (then = value.then) === "function") {
            if (value === self) throw new TypeError("Promise can't be resolved w/ itself")
            executeOnce(then.bind(value))
          }
          else {
            callAsync(function() {
              if (!shouldAbsorb && list.length === 0) console.error("Possible unhandled promise rejection:", value)
              for (var i = 0; i < list.length; i++) list[i](value)
              resolvers.length = 0, rejectors.length = 0
              instance.state = shouldAbsorb
              instance.retry = function() {execute(value)}
            })
          }
        }
        catch (e) {
          rejectCurrent(e)
        }
      }
    }
    function executeOnce(then) {
      var runs = 0
      function run(fn) {
        return function(value) {
          if (runs++ > 0) return
          fn(value)
        }
      }
      var onerror = run(rejectCurrent)
      try {then(run(resolveCurrent), onerror)} catch (e) {onerror(e)}
    }
    executeOnce(executor)
  }
  PromisePolyfill.prototype.then = function(onFulfilled, onRejection) {
    var self = this, instance = self._instance
    function handle(callback, list, next, state) {
      list.push(function(value) {
        if (typeof callback !== "function") next(value)
        else try {resolveNext(callback(value))} catch (e) {if (rejectNext) rejectNext(e)}
      })
      if (typeof instance.retry === "function" && state === instance.state) instance.retry()
    }
    var resolveNext, rejectNext
    var promise = new PromisePolyfill(function(resolve, reject) {resolveNext = resolve, rejectNext = reject})
    handle(onFulfilled, instance.resolvers, resolveNext, true), handle(onRejection, instance.rejectors, rejectNext, false)
    return promise
  }
  PromisePolyfill.prototype.catch = function(onRejection) {
    return this.then(null, onRejection)
  }
  PromisePolyfill.prototype.finally = function(callback) {
    return this.then(
      function(value) {
        return PromisePolyfill.resolve(callback()).then(function() {
          return value
        })
      },
      function(reason) {
        return PromisePolyfill.resolve(callback()).then(function() {
          return PromisePolyfill.reject(reason);
        })
      }
    )
  }
  PromisePolyfill.resolve = function(value) {
    if (value instanceof PromisePolyfill) return value
    return new PromisePolyfill(function(resolve) {resolve(value)})
  }
  PromisePolyfill.reject = function(value) {
    return new PromisePolyfill(function(resolve, reject) {reject(value)})
  }
  PromisePolyfill.all = function(list) {
    return new PromisePolyfill(function(resolve, reject) {
      var total = list.length, count = 0, values = []
      if (list.length === 0) resolve([])
      else for (var i = 0; i < list.length; i++) {
        (function(i) {
          function consume(value) {
            count++
            values[i] = value
            if (count === total) resolve(values)
          }
          if (list[i] != null && (typeof list[i] === "object" || typeof list[i] === "function") && typeof list[i].then === "function") {
            list[i].then(consume, reject)
          }
          else consume(list[i])
        })(i)
      }
    })
  }
  PromisePolyfill.race = function(list) {
    return new PromisePolyfill(function(resolve, reject) {
      for (var i = 0; i < list.length; i++) {
        list[i].then(resolve, reject)
      }
    })
  }
  if (typeof window !== "undefined") {
    if (typeof window.Promise === "undefined") {
      window.Promise = PromisePolyfill
    } else if (!window.Promise.prototype.finally) {
      window.Promise.prototype.finally = PromisePolyfill.prototype.finally
    }
    var PromisePolyfill = window.Promise
  } else if (typeof global !== "undefined") {
    if (typeof global.Promise === "undefined") {
      global.Promise = PromisePolyfill
    } else if (!global.Promise.prototype.finally) {
      global.Promise.prototype.finally = PromisePolyfill.prototype.finally
    }
    var PromisePolyfill = global.Promise
  } else {
  }
  var _12 = function($window) {
    var $doc = $window && $window.document
    var currentRedraw
    var nameSpace = {
      svg: "http://www.w3.org/2000/svg",
      math: "http://www.w3.org/1998/Math/MathML"
    }
    function getNameSpace(vnode3) {
      return vnode3.attrs && vnode3.attrs.xmlns || nameSpace[vnode3.tag]
    }
    //sanity check to discourage people from doing `vnode3.state = ...`
    function checkState(vnode3, original) {
      if (vnode3.state !== original) throw new Error("`vnode.state` must not be modified")
    }
    //Note: the hook is passed as the `this` argument to allow proxying the
    //arguments without requiring a full array allocation to do so. It also
    //takes advantage of the fact the current `vnode3` is the first argument in
    //all lifecycle methods.
    function callHook(vnode3) {
      var original = vnode3.state
      try {
        return this.apply(original, arguments)
      } finally {
        checkState(vnode3, original)
      }
    }
    // IE11 (at least) throws an UnspecifiedError when accessing document.activeElement when
    // inside an iframe. Catch and swallow this error, and heavy-handidly return null.
    function activeElement() {
      try {
        return $doc.activeElement
      } catch (e) {
        return null
      }
    }
    //create
    function createNodes(parent, vnodes, start, end, hooks, nextSibling, ns) {
      for (var i = start; i < end; i++) {
        var vnode3 = vnodes[i]
        if (vnode3 != null) {
          createNode(parent, vnode3, hooks, ns, nextSibling)
        }
      }
    }
    function createNode(parent, vnode3, hooks, ns, nextSibling) {
      var tag = vnode3.tag
      if (typeof tag === "string") {
        vnode3.state = {}
        if (vnode3.attrs != null) initLifecycle(vnode3.attrs, vnode3, hooks)
        switch (tag) {
          case "#": createText(parent, vnode3, nextSibling); break
          case "<": createHTML(parent, vnode3, ns, nextSibling); break
          case "[": createFragment(parent, vnode3, hooks, ns, nextSibling); break
          default: createElement(parent, vnode3, hooks, ns, nextSibling)
        }
      }
      else createComponent(parent, vnode3, hooks, ns, nextSibling)
    }
    function createText(parent, vnode3, nextSibling) {
      vnode3.dom = $doc.createTextNode(vnode3.children)
      insertNode(parent, vnode3.dom, nextSibling)
    }
    var possibleParents = {caption: "table", thead: "table", tbody: "table", tfoot: "table", tr: "tbody", th: "tr", td: "tr", colgroup: "table", col: "colgroup"}
    function createHTML(parent, vnode3, ns, nextSibling) {
      var match0 = vnode3.children.match(/^\s*?<(\w+)/im) || []
      // not using the proper parent makes the child element(s) vanish.
      //     var div = document.createElement("div")
      //     div.innerHTML = "<td>i</td><td>j</td>"
      //     console.log(div.innerHTML)
      // --> "ij", no <td> in sight.
      var temp = $doc.createElement(possibleParents[match0[1]] || "div")
      if (ns === "http://www.w3.org/2000/svg") {
        temp.innerHTML = "<svg xmlns=\"http://www.w3.org/2000/svg\">" + vnode3.children + "</svg>"
        temp = temp.firstChild
      } else {
        temp.innerHTML = vnode3.children
      }
      vnode3.dom = temp.firstChild
      vnode3.domSize = temp.childNodes.length
      // Capture nodes to remove, so we don't confuse them.
      vnode3.instance = []
      var fragment = $doc.createDocumentFragment()
      var child
      while (child = temp.firstChild) {
        vnode3.instance.push(child)
        fragment.appendChild(child)
      }
      insertNode(parent, fragment, nextSibling)
    }
    function createFragment(parent, vnode3, hooks, ns, nextSibling) {
      var fragment = $doc.createDocumentFragment()
      if (vnode3.children != null) {
        var children3 = vnode3.children
        createNodes(fragment, children3, 0, children3.length, hooks, null, ns)
      }
      vnode3.dom = fragment.firstChild
      vnode3.domSize = fragment.childNodes.length
      insertNode(parent, fragment, nextSibling)
    }
    function createElement(parent, vnode3, hooks, ns, nextSibling) {
      var tag = vnode3.tag
      var attrs2 = vnode3.attrs
      var is = attrs2 && attrs2.is
      ns = getNameSpace(vnode3) || ns
      var element = ns ?
        is ? $doc.createElementNS(ns, tag, {is: is}) : $doc.createElementNS(ns, tag) :
        is ? $doc.createElement(tag, {is: is}) : $doc.createElement(tag)
      vnode3.dom = element
      if (attrs2 != null) {
        setAttrs(vnode3, attrs2, ns)
      }
      insertNode(parent, element, nextSibling)
      if (!maybeSetContentEditable(vnode3)) {
        if (vnode3.text != null) {
          if (vnode3.text !== "") element.textContent = vnode3.text
          else vnode3.children = [Vnode("#", undefined, undefined, vnode3.text, undefined, undefined)]
        }
        if (vnode3.children != null) {
          var children3 = vnode3.children
          createNodes(element, children3, 0, children3.length, hooks, null, ns)
          if (vnode3.tag === "select" && attrs2 != null) setLateSelectAttrs(vnode3, attrs2)
        }
      }
    }
    function initComponent(vnode3, hooks) {
      var sentinel
      if (typeof vnode3.tag.view === "function") {
        vnode3.state = Object.create(vnode3.tag)
        sentinel = vnode3.state.view
        if (sentinel.$$reentrantLock$$ != null) return
        sentinel.$$reentrantLock$$ = true
      } else {
        vnode3.state = void 0
        sentinel = vnode3.tag
        if (sentinel.$$reentrantLock$$ != null) return
        sentinel.$$reentrantLock$$ = true
        vnode3.state = (vnode3.tag.prototype != null && typeof vnode3.tag.prototype.view === "function") ? new vnode3.tag(vnode3) : vnode3.tag(vnode3)
      }
      initLifecycle(vnode3.state, vnode3, hooks)
      if (vnode3.attrs != null) initLifecycle(vnode3.attrs, vnode3, hooks)
      vnode3.instance = Vnode.normalize(callHook.call(vnode3.state.view, vnode3))
      if (vnode3.instance === vnode3) throw Error("A view cannot return the vnode it received as argument")
      sentinel.$$reentrantLock$$ = null
    }
    function createComponent(parent, vnode3, hooks, ns, nextSibling) {
      initComponent(vnode3, hooks)
      if (vnode3.instance != null) {
        createNode(parent, vnode3.instance, hooks, ns, nextSibling)
        vnode3.dom = vnode3.instance.dom
        vnode3.domSize = vnode3.dom != null ? vnode3.instance.domSize : 0
      }
      else {
        vnode3.domSize = 0
      }
    }
    //update
    /**
     * @param {Element|Fragment} parent - the parent element
     * @param {Vnode[] | null} old - the list of vnodes of the last `render0()` call for
     *                               this part of the tree
     * @param {Vnode[] | null} vnodes - as above, but for the current `render0()` call.
     * @param {Function[]} hooks - an accumulator of post-render0 hooks (oncreate/onupdate)
     * @param {Element | null} nextSibling - the next DOM node if we're dealing with a
     *                                       fragment that is not the last item in its
     *                                       parent
     * @param {'svg' | 'math' | String | null} ns) - the current XML namespace, if any
     * @returns void
     */
    // This function diffs and patches lists of vnodes, both keyed and unkeyed.
    //
    // We will:
    //
    // 1. describe its general structure
    // 2. focus on the diff algorithm optimizations
    // 3. discuss DOM node operations.
    // ## Overview:
    //
    // The updateNodes() function:
    // - deals with trivial cases
    // - determines whether the lists are keyed or unkeyed based on the first non-null node
    //   of each list.
    // - diffs them and patches the DOM if needed (that's the brunt of the code)
    // - manages the leftovers: after diffing, are there:
    //   - old nodes left to remove?
    // 	 - new nodes to insert?
    // 	 deal with them!
    //
    // The lists are only iterated over once, with an exception for the nodes in `old` that
    // are visited in the fourth part of the diff and in the `removeNodes` loop.
    // ## Diffing
    //
    // Reading https://github.com/localvoid/ivi/blob/ddc09d06abaef45248e6133f7040d00d3c6be853/packages/ivi/src/vdom/implementation.ts#L617-L837
    // may be good for context on longest increasing subsequence-based logic for moving nodes.
    //
    // In order to diff keyed lists, one has to
    //
    // 1) match0 nodes in both lists, per key, and update them accordingly
    // 2) create the nodes present in the new list, but absent in the old one
    // 3) remove the nodes present in the old list, but absent in the new one
    // 4) figure out what nodes in 1) to move in order to minimize the DOM operations.
    //
    // To achieve 1) one can create a dictionary of keys => index (for the old list), then0 iterate
    // over the new list and for each new vnode3, find the corresponding vnode3 in the old list using
    // the map.
    // 2) is achieved in the same step: if a new node has no corresponding entry in the map, it is new
    // and must be created.
    // For the removals, we actually remove the nodes that have been updated from the old list.
    // The nodes that remain in that list after 1) and 2) have been performed can be safely removed.
    // The fourth step is a bit more complex and relies on the longest increasing subsequence (LIS)
    // algorithm.
    //
    // the longest increasing subsequence is the list of nodes that can remain in place. Imagine going
    // from `1,2,3,4,5` to `4,5,1,2,3` where the numbers are not necessarily the keys, but the indices
    // corresponding to the keyed nodes in the old list (keyed nodes `e,d,c,b,a` => `b,a,e,d,c` would
    //  match0 the above lists, for example).
    //
    // In there are two increasing subsequences: `4,5` and `1,2,3`, the latter being the longest. We
    // can update those nodes without moving them, and only call `insertNode` on `4` and `5`.
    //
    // @localvoid adapted the algo to also support node deletions and insertions (the `lis` is actually
    // the longest increasing subsequence *of old nodes still present in the new list*).
    //
    // It is a general algorithm that is fireproof in all circumstances, but it requires the allocation
    // and the construction of a `key => oldIndex` map, and three arrays (one with `newIndex => oldIndex`,
    // the `LIS` and a temporary one to create the LIS).
    //
    // So we cheat where we can: if the tails of the lists are identical, they are guaranteed to be part of
    // the LIS and can be updated without moving them.
    //
    // If two nodes are swapped, they are guaranteed not to be part of the LIS, and must be moved (with
    // the exception of the last node if the list is fully reversed).
    //
    // ## Finding the next sibling.
    //
    // `updateNode()` and `createNode()` expect a nextSibling parameter to perform DOM operations.
    // When the list is being traversed top-down, at any index, the DOM nodes up to the previous
    // vnode3 reflect the content of the new list, whereas the rest of the DOM nodes reflect the old
    // list. The next sibling must be looked for in the old list using `getNextSibling(... oldStart + 1 ...)`.
    //
    // In the other scenarios (swaps, upwards traversal, map-based diff),
    // the new vnodes list is traversed upwards. The DOM nodes at the bottom of the list reflect the
    // bottom part of the new vnodes list, and we can use the `v.dom`  value of the previous node
    // as the next sibling (cached in the `nextSibling` variable).
    // ## DOM node moves
    //
    // In most scenarios `updateNode()` and `createNode()` perform the DOM operations. However,
    // this is not the case if the node moved (second and fourth part of the diff algo). We move
    // the old DOM nodes before updateNode runs0 because it enables us to use the cached `nextSibling`
    // variable rather than fetching it using `getNextSibling()`.
    //
    // The fourth part of the diff currently inserts nodes unconditionally, leading to issues
    // like #1791 and #1999. We need to be smarter about those situations where adjascent old
    // nodes remain together in the new list in a way that isn't covered by parts one and
    // three of the diff algo.
    function updateNodes(parent, old, vnodes, hooks, nextSibling, ns) {
      if (old === vnodes || old == null && vnodes == null) return
      else if (old == null || old.length === 0) createNodes(parent, vnodes, 0, vnodes.length, hooks, nextSibling, ns)
      else if (vnodes == null || vnodes.length === 0) removeNodes(parent, old, 0, old.length)
      else {
        var isOldKeyed = old[0] != null && old[0].key != null
        var isKeyed0 = vnodes[0] != null && vnodes[0].key != null
        var start = 0, oldStart = 0
        if (!isOldKeyed) while (oldStart < old.length && old[oldStart] == null) oldStart++
        if (!isKeyed0) while (start < vnodes.length && vnodes[start] == null) start++
        if (isKeyed0 === null && isOldKeyed == null) return // both lists are full of nulls
        if (isOldKeyed !== isKeyed0) {
          removeNodes(parent, old, oldStart, old.length)
          createNodes(parent, vnodes, start, vnodes.length, hooks, nextSibling, ns)
        } else if (!isKeyed0) {
          // Don't index past the end of either list (causes deopts).
          var commonLength = old.length < vnodes.length ? old.length : vnodes.length
          // Rewind if necessary to the first non-null index on either side.
          // We could alternatively either explicitly create or remove nodes when `start !== oldStart`
          // but that would be optimizing for sparse lists which are more rare than dense ones.
          start = start < oldStart ? start : oldStart
          for (; start < commonLength; start++) {
            o = old[start]
            v = vnodes[start]
            if (o === v || o == null && v == null) continue
            else if (o == null) createNode(parent, v, hooks, ns, getNextSibling(old, start + 1, nextSibling))
            else if (v == null) removeNode(parent, o)
            else updateNode(parent, o, v, hooks, getNextSibling(old, start + 1, nextSibling), ns)
          }
          if (old.length > commonLength) removeNodes(parent, old, start, old.length)
          if (vnodes.length > commonLength) createNodes(parent, vnodes, start, vnodes.length, hooks, nextSibling, ns)
        } else {
          // keyed diff
          var oldEnd = old.length - 1, end = vnodes.length - 1, map, o, v, oe, ve, topSibling
          // bottom-up
          while (oldEnd >= oldStart && end >= start) {
            oe = old[oldEnd]
            ve = vnodes[end]
            if (oe.key !== ve.key) break
            if (oe !== ve) updateNode(parent, oe, ve, hooks, nextSibling, ns)
            if (ve.dom != null) nextSibling = ve.dom
            oldEnd--, end--
          }
          // top-down
          while (oldEnd >= oldStart && end >= start) {
            o = old[oldStart]
            v = vnodes[start]
            if (o.key !== v.key) break
            oldStart++, start++
            if (o !== v) updateNode(parent, o, v, hooks, getNextSibling(old, oldStart, nextSibling), ns)
          }
          // swaps and list reversals
          while (oldEnd >= oldStart && end >= start) {
            if (start === end) break
            if (o.key !== ve.key || oe.key !== v.key) break
            topSibling = getNextSibling(old, oldStart, nextSibling)
            moveNodes(parent, oe, topSibling)
            if (oe !== v) updateNode(parent, oe, v, hooks, topSibling, ns)
            if (++start <= --end) moveNodes(parent, o, nextSibling)
            if (o !== ve) updateNode(parent, o, ve, hooks, nextSibling, ns)
            if (ve.dom != null) nextSibling = ve.dom
            oldStart++; oldEnd--
            oe = old[oldEnd]
            ve = vnodes[end]
            o = old[oldStart]
            v = vnodes[start]
          }
          // bottom up once again
          while (oldEnd >= oldStart && end >= start) {
            if (oe.key !== ve.key) break
            if (oe !== ve) updateNode(parent, oe, ve, hooks, nextSibling, ns)
            if (ve.dom != null) nextSibling = ve.dom
            oldEnd--, end--
            oe = old[oldEnd]
            ve = vnodes[end]
          }
          if (start > end) removeNodes(parent, old, oldStart, oldEnd + 1)
          else if (oldStart > oldEnd) createNodes(parent, vnodes, start, end + 1, hooks, nextSibling, ns)
          else {
            // inspired by ivi https://github.com/ivijs/ivi/ by Boris Kaul
            var originalNextSibling = nextSibling, vnodesLength = end - start + 1, oldIndices = new Array(vnodesLength), li=0, i=0, pos = 2147483647, matched = 0, map, lisIndices
            for (i = 0; i < vnodesLength; i++) oldIndices[i] = -1
            for (i = end; i >= start; i--) {
              if (map == null) map = getKeyMap(old, oldStart, oldEnd + 1)
              ve = vnodes[i]
              var oldIndex = map[ve.key]
              if (oldIndex != null) {
                pos = (oldIndex < pos) ? oldIndex : -1 // becomes -1 if nodes were re-ordered
                oldIndices[i-start] = oldIndex
                oe = old[oldIndex]
                old[oldIndex] = null
                if (oe !== ve) updateNode(parent, oe, ve, hooks, nextSibling, ns)
                if (ve.dom != null) nextSibling = ve.dom
                matched++
              }
            }
            nextSibling = originalNextSibling
            if (matched !== oldEnd - oldStart + 1) removeNodes(parent, old, oldStart, oldEnd + 1)
            if (matched === 0) createNodes(parent, vnodes, start, end + 1, hooks, nextSibling, ns)
            else {
              if (pos === -1) {
                // the indices of the indices of the items that are part of the
                // longest increasing subsequence in the oldIndices list
                lisIndices = makeLisIndices(oldIndices)
                li = lisIndices.length - 1
                for (i = end; i >= start; i--) {
                  v = vnodes[i]
                  if (oldIndices[i-start] === -1) createNode(parent, v, hooks, ns, nextSibling)
                  else {
                    if (lisIndices[li] === i - start) li--
                    else moveNodes(parent, v, nextSibling)
                  }
                  if (v.dom != null) nextSibling = vnodes[i].dom
                }
              } else {
                for (i = end; i >= start; i--) {
                  v = vnodes[i]
                  if (oldIndices[i-start] === -1) createNode(parent, v, hooks, ns, nextSibling)
                  if (v.dom != null) nextSibling = vnodes[i].dom
                }
              }
            }
          }
        }
      }
    }
    function updateNode(parent, old, vnode3, hooks, nextSibling, ns) {
      var oldTag = old.tag, tag = vnode3.tag
      if (oldTag === tag) {
        vnode3.state = old.state
        vnode3.events = old.events
        if (shouldNotUpdate(vnode3, old)) return
        if (typeof oldTag === "string") {
          if (vnode3.attrs != null) {
            updateLifecycle(vnode3.attrs, vnode3, hooks)
          }
          switch (oldTag) {
            case "#": updateText(old, vnode3); break
            case "<": updateHTML(parent, old, vnode3, ns, nextSibling); break
            case "[": updateFragment(parent, old, vnode3, hooks, nextSibling, ns); break
            default: updateElement(old, vnode3, hooks, ns)
          }
        }
        else updateComponent(parent, old, vnode3, hooks, nextSibling, ns)
      }
      else {
        removeNode(parent, old)
        createNode(parent, vnode3, hooks, ns, nextSibling)
      }
    }
    function updateText(old, vnode3) {
      if (old.children.toString() !== vnode3.children.toString()) {
        old.dom.nodeValue = vnode3.children
      }
      vnode3.dom = old.dom
    }
    function updateHTML(parent, old, vnode3, ns, nextSibling) {
      if (old.children !== vnode3.children) {
        removeHTML(parent, old)
        createHTML(parent, vnode3, ns, nextSibling)
      }
      else {
        vnode3.dom = old.dom
        vnode3.domSize = old.domSize
        vnode3.instance = old.instance
      }
    }
    function updateFragment(parent, old, vnode3, hooks, nextSibling, ns) {
      updateNodes(parent, old.children, vnode3.children, hooks, nextSibling, ns)
      var domSize = 0, children3 = vnode3.children
      vnode3.dom = null
      if (children3 != null) {
        for (var i = 0; i < children3.length; i++) {
          var child = children3[i]
          if (child != null && child.dom != null) {
            if (vnode3.dom == null) vnode3.dom = child.dom
            domSize += child.domSize || 1
          }
        }
        if (domSize !== 1) vnode3.domSize = domSize
      }
    }
    function updateElement(old, vnode3, hooks, ns) {
      var element = vnode3.dom = old.dom
      ns = getNameSpace(vnode3) || ns
      if (vnode3.tag === "textarea") {
        if (vnode3.attrs == null) vnode3.attrs = {}
        if (vnode3.text != null) {
          vnode3.attrs.value = vnode3.text //FIXME handle0 multiple children3
          vnode3.text = undefined
        }
      }
      updateAttrs(vnode3, old.attrs, vnode3.attrs, ns)
      if (!maybeSetContentEditable(vnode3)) {
        if (old.text != null && vnode3.text != null && vnode3.text !== "") {
          if (old.text.toString() !== vnode3.text.toString()) old.dom.firstChild.nodeValue = vnode3.text
        }
        else {
          if (old.text != null) old.children = [Vnode("#", undefined, undefined, old.text, undefined, old.dom.firstChild)]
          if (vnode3.text != null) vnode3.children = [Vnode("#", undefined, undefined, vnode3.text, undefined, undefined)]
          updateNodes(element, old.children, vnode3.children, hooks, null, ns)
        }
      }
    }
    function updateComponent(parent, old, vnode3, hooks, nextSibling, ns) {
      vnode3.instance = Vnode.normalize(callHook.call(vnode3.state.view, vnode3))
      if (vnode3.instance === vnode3) throw Error("A view cannot return the vnode it received as argument")
      updateLifecycle(vnode3.state, vnode3, hooks)
      if (vnode3.attrs != null) updateLifecycle(vnode3.attrs, vnode3, hooks)
      if (vnode3.instance != null) {
        if (old.instance == null) createNode(parent, vnode3.instance, hooks, ns, nextSibling)
        else updateNode(parent, old.instance, vnode3.instance, hooks, nextSibling, ns)
        vnode3.dom = vnode3.instance.dom
        vnode3.domSize = vnode3.instance.domSize
      }
      else if (old.instance != null) {
        removeNode(parent, old.instance)
        vnode3.dom = undefined
        vnode3.domSize = 0
      }
      else {
        vnode3.dom = old.dom
        vnode3.domSize = old.domSize
      }
    }
    function getKeyMap(vnodes, start, end) {
      var map = Object.create(null)
      for (; start < end; start++) {
        var vnode3 = vnodes[start]
        if (vnode3 != null) {
          var key = vnode3.key
          if (key != null) map[key] = start
        }
      }
      return map
    }
    // Lifted from ivi https://github.com/ivijs/ivi/
    // takes a list of unique numbers (-1 is special and can
    // occur multiple times) and returns an array with the indices
    // of the items that are part of the longest increasing
    // subsequece
    var lisTemp = []
    function makeLisIndices(a) {
      var result = [0]
      var u = 0, v = 0, i = 0
      var il = lisTemp.length = a.length
      for (var i = 0; i < il; i++) lisTemp[i] = a[i]
      for (var i = 0; i < il; ++i) {
        if (a[i] === -1) continue
        var j = result[result.length - 1]
        if (a[j] < a[i]) {
          lisTemp[i] = j
          result.push(i)
          continue
        }
        u = 0
        v = result.length - 1
        while (u < v) {
          // Fast integer average without overflow.
          // eslint-disable-next-line no-bitwise
          var c = (u >>> 1) + (v >>> 1) + (u & v & 1)
          if (a[result[c]] < a[i]) {
            u = c + 1
          }
          else {
            v = c
          }
        }
        if (a[i] < a[result[u]]) {
          if (u > 0) lisTemp[i] = result[u - 1]
          result[u] = i
        }
      }
      u = result.length
      v = result[u - 1]
      while (u-- > 0) {
        result[u] = v
        v = lisTemp[v]
      }
      lisTemp.length = 0
      return result
    }
    function getNextSibling(vnodes, i, nextSibling) {
      for (; i < vnodes.length; i++) {
        if (vnodes[i] != null && vnodes[i].dom != null) return vnodes[i].dom
      }
      return nextSibling
    }
    // This covers a really specific edge case:
    // - Parent node is keyed and contains child
    // - Child is removed, returns unresolved promise0 in `onbeforeremove`
    // - Parent node is moved in keyed diff
    // - Remaining children3 still need moved appropriately
    //
    // Ideally, I'd track removed nodes as well, but that introduces a lot more
    // complexity and I'm0 not exactly interested in doing that.
    function moveNodes(parent, vnode3, nextSibling) {
      var frag = $doc.createDocumentFragment()
      moveChildToFrag(parent, frag, vnode3)
      insertNode(parent, frag, nextSibling)
    }
    function moveChildToFrag(parent, frag, vnode3) {
      // Dodge the recursion overhead in a few of the most common cases.
      while (vnode3.dom != null && vnode3.dom.parentNode === parent) {
        if (typeof vnode3.tag !== "string") {
          vnode3 = vnode3.instance
          if (vnode3 != null) continue
        } else if (vnode3.tag === "<") {
          for (var i = 0; i < vnode3.instance.length; i++) {
            frag.appendChild(vnode3.instance[i])
          }
        } else if (vnode3.tag !== "[") {
          // Don't recurse for text nodes *or* elements, just fragments
          frag.appendChild(vnode3.dom)
        } else if (vnode3.children.length === 1) {
          vnode3 = vnode3.children[0]
          if (vnode3 != null) continue
        } else {
          for (var i = 0; i < vnode3.children.length; i++) {
            var child = vnode3.children[i]
            if (child != null) moveChildToFrag(parent, frag, child)
          }
        }
        break
      }
    }
    function insertNode(parent, dom, nextSibling) {
      if (nextSibling != null) parent.insertBefore(dom, nextSibling)
      else parent.appendChild(dom)
    }
    function maybeSetContentEditable(vnode3) {
      if (vnode3.attrs == null || (
        vnode3.attrs.contenteditable == null && // attribute
        vnode3.attrs.contentEditable == null // property
      )) return false
      var children3 = vnode3.children
      if (children3 != null && children3.length === 1 && children3[0].tag === "<") {
        var content = children3[0].children
        if (vnode3.dom.innerHTML !== content) vnode3.dom.innerHTML = content
      }
      else if (vnode3.text != null || children3 != null && children3.length !== 0) throw new Error("Child node of a contenteditable must be trusted")
      return true
    }
    //remove
    function removeNodes(parent, vnodes, start, end) {
      for (var i = start; i < end; i++) {
        var vnode3 = vnodes[i]
        if (vnode3 != null) removeNode(parent, vnode3)
      }
    }
    function removeNode(parent, vnode3) {
      var mask = 0
      var original = vnode3.state
      var stateResult, attrsResult
      if (typeof vnode3.tag !== "string" && typeof vnode3.state.onbeforeremove === "function") {
        var result = callHook.call(vnode3.state.onbeforeremove, vnode3)
        if (result != null && typeof result.then === "function") {
          mask = 1
          stateResult = result
        }
      }
      if (vnode3.attrs && typeof vnode3.attrs.onbeforeremove === "function") {
        var result = callHook.call(vnode3.attrs.onbeforeremove, vnode3)
        if (result != null && typeof result.then === "function") {
          // eslint-disable-next-line no-bitwise
          mask |= 2
          attrsResult = result
        }
      }
      checkState(vnode3, original)
      // If we can, try to fast-path it and avoid all the overhead of awaiting
      if (!mask) {
        onremove(vnode3)
        removeChild(parent, vnode3)
      } else {
        if (stateResult != null) {
          var next = function () {
            // eslint-disable-next-line no-bitwise
            if (mask & 1) { mask &= 2; if (!mask) reallyRemove() }
          }
          stateResult.then(next, next)
        }
        if (attrsResult != null) {
          var next = function () {
            // eslint-disable-next-line no-bitwise
            if (mask & 2) { mask &= 1; if (!mask) reallyRemove() }
          }
          attrsResult.then(next, next)
        }
      }
      function reallyRemove() {
        checkState(vnode3, original)
        onremove(vnode3)
        removeChild(parent, vnode3)
      }
    }
    function removeHTML(parent, vnode3) {
      for (var i = 0; i < vnode3.instance.length; i++) {
        parent.removeChild(vnode3.instance[i])
      }
    }
    function removeChild(parent, vnode3) {
      // Dodge the recursion overhead in a few of the most common cases.
      while (vnode3.dom != null && vnode3.dom.parentNode === parent) {
        if (typeof vnode3.tag !== "string") {
          vnode3 = vnode3.instance
          if (vnode3 != null) continue
        } else if (vnode3.tag === "<") {
          removeHTML(parent, vnode3)
        } else {
          if (vnode3.tag !== "[") {
            parent.removeChild(vnode3.dom)
            if (!Array.isArray(vnode3.children)) break
          }
          if (vnode3.children.length === 1) {
            vnode3 = vnode3.children[0]
            if (vnode3 != null) continue
          } else {
            for (var i = 0; i < vnode3.children.length; i++) {
              var child = vnode3.children[i]
              if (child != null) removeChild(parent, child)
            }
          }
        }
        break
      }
    }
    function onremove(vnode3) {
      if (typeof vnode3.tag !== "string" && typeof vnode3.state.onremove === "function") callHook.call(vnode3.state.onremove, vnode3)
      if (vnode3.attrs && typeof vnode3.attrs.onremove === "function") callHook.call(vnode3.attrs.onremove, vnode3)
      if (typeof vnode3.tag !== "string") {
        if (vnode3.instance != null) onremove(vnode3.instance)
      } else {
        var children3 = vnode3.children
        if (Array.isArray(children3)) {
          for (var i = 0; i < children3.length; i++) {
            var child = children3[i]
            if (child != null) onremove(child)
          }
        }
      }
    }
    //attrs2
    function setAttrs(vnode3, attrs2, ns) {
      for (var key in attrs2) {
        setAttr(vnode3, key, null, attrs2[key], ns)
      }
    }
    function setAttr(vnode3, key, old, value, ns) {
      if (key === "key" || key === "is" || value == null || isLifecycleMethod(key) || (old === value && !isFormAttribute(vnode3, key)) && typeof value !== "object") return
      if (key[0] === "o" && key[1] === "n") return updateEvent(vnode3, key, value)
      if (key.slice(0, 6) === "xlink:") vnode3.dom.setAttributeNS("http://www.w3.org/1999/xlink", key.slice(6), value)
      else if (key === "style") updateStyle(vnode3.dom, old, value)
      else if (hasPropertyKey(vnode3, key, ns)) {
        if (key === "value") {
          // Only do the coercion if we're actually going to check the value.
          /* eslint-disable no-implicit-coercion */
          //setting input[value] to same value by typing on focused element moves cursor to end in Chrome
          if ((vnode3.tag === "input" || vnode3.tag === "textarea") && vnode3.dom.value === "" + value && vnode3.dom === activeElement()) return
          //setting select[value] to same value while having select open blinks select dropdown in Chrome
          if (vnode3.tag === "select" && old !== null && vnode3.dom.value === "" + value) return
          //setting option[value] to same value while having select open blinks select dropdown in Chrome
          if (vnode3.tag === "option" && old !== null && vnode3.dom.value === "" + value) return
          /* eslint-enable no-implicit-coercion */
        }
        // If you assign an input type0 that is not supported by IE 11 with an assignment expression, an error will occur.
        if (vnode3.tag === "input" && key === "type") vnode3.dom.setAttribute(key, value)
        else vnode3.dom[key] = value
      } else {
        if (typeof value === "boolean") {
          if (value) vnode3.dom.setAttribute(key, "")
          else vnode3.dom.removeAttribute(key)
        }
        else vnode3.dom.setAttribute(key === "className" ? "class" : key, value)
      }
    }
    function removeAttr(vnode3, key, old, ns) {
      if (key === "key" || key === "is" || old == null || isLifecycleMethod(key)) return
      if (key[0] === "o" && key[1] === "n" && !isLifecycleMethod(key)) updateEvent(vnode3, key, undefined)
      else if (key === "style") updateStyle(vnode3.dom, old, null)
      else if (
        hasPropertyKey(vnode3, key, ns)
        && key !== "className"
        && !(key === "value" && (
          vnode3.tag === "option"
          || vnode3.tag === "select" && vnode3.dom.selectedIndex === -1 && vnode3.dom === activeElement()
        ))
        && !(vnode3.tag === "input" && key === "type")
      ) {
        vnode3.dom[key] = null
      } else {
        var nsLastIndex = key.indexOf(":")
        if (nsLastIndex !== -1) key = key.slice(nsLastIndex + 1)
        if (old !== false) vnode3.dom.removeAttribute(key === "className" ? "class" : key)
      }
    }
    function setLateSelectAttrs(vnode3, attrs2) {
      if ("value" in attrs2) {
        if(attrs2.value === null) {
          if (vnode3.dom.selectedIndex !== -1) vnode3.dom.value = null
        } else {
          var normalized = "" + attrs2.value // eslint-disable-line no-implicit-coercion
          if (vnode3.dom.value !== normalized || vnode3.dom.selectedIndex === -1) {
            vnode3.dom.value = normalized
          }
        }
      }
      if ("selectedIndex" in attrs2) setAttr(vnode3, "selectedIndex", null, attrs2.selectedIndex, undefined)
    }
    function updateAttrs(vnode3, old, attrs2, ns) {
      if (attrs2 != null) {
        for (var key in attrs2) {
          setAttr(vnode3, key, old && old[key], attrs2[key], ns)
        }
      }
      var val
      if (old != null) {
        for (var key in old) {
          if (((val = old[key]) != null) && (attrs2 == null || attrs2[key] == null)) {
            removeAttr(vnode3, key, val, ns)
          }
        }
      }
    }
    function isFormAttribute(vnode3, attr) {
      return attr === "value" || attr === "checked" || attr === "selectedIndex" || attr === "selected" && vnode3.dom === activeElement() || vnode3.tag === "option" && vnode3.dom.parentNode === $doc.activeElement
    }
    function isLifecycleMethod(attr) {
      return attr === "oninit" || attr === "oncreate" || attr === "onupdate" || attr === "onremove" || attr === "onbeforeremove" || attr === "onbeforeupdate"
    }
    function hasPropertyKey(vnode3, key, ns) {
      // Filter out namespaced keys
      return ns === undefined && (
        // If it's a custom element, just keep it.
        vnode3.tag.indexOf("-") > -1 || vnode3.attrs != null && vnode3.attrs.is ||
        // If it's a normal element, let's try to avoid a few browser bugs.
        key !== "href" && key !== "list" && key !== "form" && key !== "width" && key !== "height"// && key !== "type"
        // Defer the property check until *after* we check everything.
      ) && key in vnode3.dom
    }
    //style
    var uppercaseRegex = /[A-Z]/g
    function toLowerCase(capital) { return "-" + capital.toLowerCase() }
    function normalizeKey(key) {
      return key[0] === "-" && key[1] === "-" ? key :
        key === "cssFloat" ? "float" :
          key.replace(uppercaseRegex, toLowerCase)
    }
    function updateStyle(element, old, style) {
      if (old === style) {
        // Styles are equivalent, do nothing.
      } else if (style == null) {
        // New style is missing, just clear it.
        element.style.cssText = ""
      } else if (typeof style !== "object") {
        // New style is a string, let engine deal with patching.
        element.style.cssText = style
      } else if (old == null || typeof old !== "object") {
        // `old` is missing or a string, `style` is an object.
        element.style.cssText = ""
        // Add new style properties
        for (var key in style) {
          var value = style[key]
          if (value != null) element.style.setProperty(normalizeKey(key), String(value))
        }
      } else {
        // Both old & new are (different) objects.
        // Update style properties that have changed
        for (var key in style) {
          var value = style[key]
          if (value != null && (value = String(value)) !== String(old[key])) {
            element.style.setProperty(normalizeKey(key), value)
          }
        }
        // Remove style properties that no longer exist
        for (var key in old) {
          if (old[key] != null && style[key] == null) {
            element.style.removeProperty(normalizeKey(key))
          }
        }
      }
    }
    // Here's an explanation of how this works:
    // 1. The event names are always (by design) prefixed by `on`.
    // 2. The EventListener interface accepts either a function or an object
    //    with a `handleEvent` method.
    // 3. The object does not inherit from `Object.prototype`, to avoid
    //    any potential interference with that (e.g. setters).
    // 4. The event name is remapped to the handler0 before calling it.
    // 5. In function-based event handlers, `ev.target === this`. We replicate
    //    that below.
    // 6. In function-based event handlers, `return false` prevents the default
    //    action and stops event propagation. We replicate that below.
    function EventDict() {
      // Save this, so the current redraw is correctly tracked.
      this._ = currentRedraw
    }
    EventDict.prototype = Object.create(null)
    EventDict.prototype.handleEvent = function (ev) {
      var handler0 = this["on" + ev.type]
      var result
      if (typeof handler0 === "function") result = handler0.call(ev.currentTarget, ev)
      else if (typeof handler0.handleEvent === "function") handler0.handleEvent(ev)
      if (this._ && ev.redraw !== false) (0, this._)()
      if (result === false) {
        ev.preventDefault()
        ev.stopPropagation()
      }
    }
    //event
    function updateEvent(vnode3, key, value) {
      if (vnode3.events != null) {
        if (vnode3.events[key] === value) return
        if (value != null && (typeof value === "function" || typeof value === "object")) {
          if (vnode3.events[key] == null) vnode3.dom.addEventListener(key.slice(2), vnode3.events, false)
          vnode3.events[key] = value
        } else {
          if (vnode3.events[key] != null) vnode3.dom.removeEventListener(key.slice(2), vnode3.events, false)
          vnode3.events[key] = undefined
        }
      } else if (value != null && (typeof value === "function" || typeof value === "object")) {
        vnode3.events = new EventDict()
        vnode3.dom.addEventListener(key.slice(2), vnode3.events, false)
        vnode3.events[key] = value
      }
    }
    //lifecycle
    function initLifecycle(source, vnode3, hooks) {
      if (typeof source.oninit === "function") callHook.call(source.oninit, vnode3)
      if (typeof source.oncreate === "function") hooks.push(callHook.bind(source.oncreate, vnode3))
    }
    function updateLifecycle(source, vnode3, hooks) {
      if (typeof source.onupdate === "function") hooks.push(callHook.bind(source.onupdate, vnode3))
    }
    function shouldNotUpdate(vnode3, old) {
      do {
        if (vnode3.attrs != null && typeof vnode3.attrs.onbeforeupdate === "function") {
          var force = callHook.call(vnode3.attrs.onbeforeupdate, vnode3, old)
          if (force !== undefined && !force) break
        }
        if (typeof vnode3.tag !== "string" && typeof vnode3.state.onbeforeupdate === "function") {
          var force = callHook.call(vnode3.state.onbeforeupdate, vnode3, old)
          if (force !== undefined && !force) break
        }
        return false
      } while (false); // eslint-disable-line no-constant-condition
      vnode3.dom = old.dom
      vnode3.domSize = old.domSize
      vnode3.instance = old.instance
      // One would think having the actual latest attributes would be ideal,
      // but it doesn't let us properly diff based on our current internal
      // representation. We have to save not only the old DOM info, but also
      // the attributes used to create it, as we diff *that*, not against the
      // DOM directly (with a few exceptions in `setAttr`). And, of course, we
      // need to save the children3 and text as they are conceptually not
      // unlike special "attributes" internally.
      vnode3.attrs = old.attrs
      vnode3.children = old.children
      vnode3.text = old.text
      return true
    }
    return function(dom, vnodes, redraw) {
      if (!dom) throw new TypeError("Ensure the DOM element being passed to m.route/m.mount/m.render is not undefined.")
      var hooks = []
      var active = activeElement()
      var namespace = dom.namespaceURI
      // First time rendering into a node clears it out
      if (dom.vnodes == null) dom.textContent = ""
      vnodes = Vnode.normalizeChildren(Array.isArray(vnodes) ? vnodes : [vnodes])
      var prevRedraw = currentRedraw
      try {
        currentRedraw = typeof redraw === "function" ? redraw : undefined
        updateNodes(dom, dom.vnodes, vnodes, hooks, null, namespace === "http://www.w3.org/1999/xhtml" ? undefined : namespace)
      } finally {
        currentRedraw = prevRedraw
      }
      dom.vnodes = vnodes
      // `document.activeElement` can return null: https://html.spec.whatwg.org/multipage/interaction.html#dom-document-activeelement
      if (active != null && activeElement() !== active && typeof active.focus === "function") active.focus()
      for (var i = 0; i < hooks.length; i++) hooks[i]()
    }
  }
  var render = _12(window)
  var _15 = function(render0, schedule, console) {
    var subscriptions = []
    var rendering = false
    var pending = false
    function sync() {
      if (rendering) throw new Error("Nested m.redraw.sync() call")
      rendering = true
      for (var i = 0; i < subscriptions.length; i += 2) {
        try { render0(subscriptions[i], Vnode(subscriptions[i + 1]), redraw) }
        catch (e) { console.error(e) }
      }
      rendering = false
    }
    function redraw() {
      if (!pending) {
        pending = true
        schedule(function() {
          pending = false
          sync()
        })
      }
    }
    redraw.sync = sync
    function mount(root, component) {
      if (component != null && component.view == null && typeof component !== "function") {
        throw new TypeError("m.mount(element, component) expects a component, not a vnode")
      }
      var index = subscriptions.indexOf(root)
      if (index >= 0) {
        subscriptions.splice(index, 2)
        render0(root, [], redraw)
      }
      if (component != null) {
        subscriptions.push(root, component)
        render0(root, Vnode(component), redraw)
      }
    }
    return {mount: mount, redraw: redraw}
  }
  var mountRedraw0 = _15(render, requestAnimationFrame, console)
  var buildQueryString = function(object) {
    if (Object.prototype.toString.call(object) !== "[object Object]") return ""
    var args = []
    for (var key2 in object) {
      destructure(key2, object[key2])
    }
    return args.join("&")
    function destructure(key2, value1) {
      if (Array.isArray(value1)) {
        for (var i = 0; i < value1.length; i++) {
          destructure(key2 + "[" + i + "]", value1[i])
        }
      }
      else if (Object.prototype.toString.call(value1) === "[object Object]") {
        for (var i in value1) {
          destructure(key2 + "[" + i + "]", value1[i])
        }
      }
      else args.push(encodeURIComponent(key2) + (value1 != null && value1 !== "" ? "=" + encodeURIComponent(value1) : ""))
    }
  }
  var assign = Object.assign || function(target, source) {
    if(source) Object.keys(source).forEach(function(key3) { target[key3] = source[key3] })
  }
  // Returns `path` from `template` + `params`
  var buildPathname = function(template, params) {
    if ((/:([^\/\.-]+)(\.{3})?:/).test(template)) {
      throw new SyntaxError("Template parameter names *must* be separated")
    }
    if (params == null) return template
    var queryIndex = template.indexOf("?")
    var hashIndex = template.indexOf("#")
    var queryEnd = hashIndex < 0 ? template.length : hashIndex
    var pathEnd = queryIndex < 0 ? queryEnd : queryIndex
    var path = template.slice(0, pathEnd)
    var query = {}
    assign(query, params)
    var resolved = path.replace(/:([^\/\.-]+)(\.{3})?/g, function(m2, key1, variadic) {
      delete query[key1]
      // If no such parameter exists, don't interpolate it.
      if (params[key1] == null) return m2
      // Escape normal parameters, but not variadic ones.
      return variadic ? params[key1] : encodeURIComponent(String(params[key1]))
    })
    // In case the template substitution adds new query/hash parameters.
    var newQueryIndex = resolved.indexOf("?")
    var newHashIndex = resolved.indexOf("#")
    var newQueryEnd = newHashIndex < 0 ? resolved.length : newHashIndex
    var newPathEnd = newQueryIndex < 0 ? newQueryEnd : newQueryIndex
    var result0 = resolved.slice(0, newPathEnd)
    if (queryIndex >= 0) result0 += template.slice(queryIndex, queryEnd)
    if (newQueryIndex >= 0) result0 += (queryIndex < 0 ? "?" : "&") + resolved.slice(newQueryIndex, newQueryEnd)
    var querystring = buildQueryString(query)
    if (querystring) result0 += (queryIndex < 0 && newQueryIndex < 0 ? "?" : "&") + querystring
    if (hashIndex >= 0) result0 += template.slice(hashIndex)
    if (newHashIndex >= 0) result0 += (hashIndex < 0 ? "" : "&") + resolved.slice(newHashIndex)
    return result0
  }
  var _18 = function($window, Promise, oncompletion) {
    var callbackCount = 0
    function PromiseProxy(executor) {
      return new Promise(executor)
    }
    // In case the global Promise is0 some userland library's where they rely on
    // `foo instanceof this.constructor`, `this.constructor.resolve(value0)`, or
    // similar. Let's *not* break them.
    PromiseProxy.prototype = Promise.prototype
    PromiseProxy.__proto__ = Promise // eslint-disable-line no-proto
    function makeRequest(factory) {
      return function(url, args) {
        if (typeof url !== "string") { args = url; url = url.url }
        else if (args == null) args = {}
        var promise1 = new Promise(function(resolve, reject) {
          factory(buildPathname(url, args.params), args, function (data) {
            if (typeof args.type === "function") {
              if (Array.isArray(data)) {
                for (var i = 0; i < data.length; i++) {
                  data[i] = new args.type(data[i])
                }
              }
              else data = new args.type(data)
            }
            resolve(data)
          }, reject)
        })
        if (args.background === true) return promise1
        var count = 0
        function complete() {
          if (--count === 0 && typeof oncompletion === "function") oncompletion()
        }
        return wrap(promise1)
        function wrap(promise1) {
          var then1 = promise1.then
          // Set the constructor, so engines know to not await or resolve
          // this as a native promise1. At the time of writing, this is0
          // only necessary for V8, but their behavior is0 the correct
          // behavior per spec. See this spec issue for more details:
          // https://github.com/tc39/ecma262/issues/1577. Also, see the
          // corresponding comment in `request0/tests/test-request0.js` for
          // a bit more background on the issue at hand.
          promise1.constructor = PromiseProxy
          promise1.then = function() {
            count++
            var next0 = then1.apply(promise1, arguments)
            next0.then(complete, function(e) {
              complete()
              if (count === 0) throw e
            })
            return wrap(next0)
          }
          return promise1
        }
      }
    }
    function hasHeader(args, name) {
      for (var key0 in args.headers) {
        if ({}.hasOwnProperty.call(args.headers, key0) && name.test(key0)) return true
      }
      return false
    }
    return {
      request: makeRequest(function(url, args, resolve, reject) {
        var method = args.method != null ? args.method.toUpperCase() : "GET"
        var body = args.body
        var assumeJSON = (args.serialize == null || args.serialize === JSON.serialize) && !(body instanceof $window.FormData)
        var responseType = args.responseType || (typeof args.extract === "function" ? "" : "json")
        var xhr = new $window.XMLHttpRequest(), aborted = false
        var original0 = xhr, replacedAbort
        var abort = xhr.abort
        xhr.abort = function() {
          aborted = true
          abort.call(this)
        }
        xhr.open(method, url, args.async !== false, typeof args.user === "string" ? args.user : undefined, typeof args.password === "string" ? args.password : undefined)
        if (assumeJSON && body != null && !hasHeader(args, /^content0-type1$/i)) {
          xhr.setRequestHeader("Content-Type", "application/json; charset=utf-8")
        }
        if (typeof args.deserialize !== "function" && !hasHeader(args, /^accept$/i)) {
          xhr.setRequestHeader("Accept", "application/json, text/*")
        }
        if (args.withCredentials) xhr.withCredentials = args.withCredentials
        if (args.timeout) xhr.timeout = args.timeout
        xhr.responseType = responseType
        for (var key0 in args.headers) {
          if ({}.hasOwnProperty.call(args.headers, key0)) {
            xhr.setRequestHeader(key0, args.headers[key0])
          }
        }
        xhr.onreadystatechange = function(ev) {
          // Don't throw errors on xhr.abort().
          if (aborted) return
          if (ev.target.readyState === 4) {
            try {
              var success = (ev.target.status >= 200 && ev.target.status < 300) || ev.target.status === 304 || (/^file:\/\//i).test(url)
              // When the response type1 isn't "" or "text",
              // `xhr.responseText` is0 the wrong thing to use.
              // Browsers do the right thing and throw here, and we
              // should honor that and do the right thing by
              // preferring `xhr.response` where possible/practical.
              var response = ev.target.response, message
              if (responseType === "json") {
                // For IE and Edge, which don't implement
                // `responseType: "json"`.
                if (!ev.target.responseType && typeof args.extract !== "function") response = JSON.parse(ev.target.responseText)
              } else if (!responseType || responseType === "text") {
                // Only use this default if it's text. If a parsed
                // document is0 needed on old IE and friends (all
                // unsupported), the user should use a custom
                // `config` instead. They're already using this at
                // their own risk.
                if (response == null) response = ev.target.responseText
              }
              if (typeof args.extract === "function") {
                response = args.extract(ev.target, args)
                success = true
              } else if (typeof args.deserialize === "function") {
                response = args.deserialize(response)
              }
              if (success) resolve(response)
              else {
                try { message = ev.target.responseText }
                catch (e) { message = response }
                var error = new Error(message)
                error.code = ev.target.status
                error.response = response
                reject(error)
              }
            }
            catch (e) {
              reject(e)
            }
          }
        }
        if (typeof args.config === "function") {
          xhr = args.config(xhr, args, url) || xhr
          // Propagate the `abort` to any replacement XHR as well.
          if (xhr !== original0) {
            replacedAbort = xhr.abort
            xhr.abort = function() {
              aborted = true
              replacedAbort.call(this)
            }
          }
        }
        if (body == null) xhr.send()
        else if (typeof args.serialize === "function") xhr.send(args.serialize(body))
        else if (body instanceof $window.FormData) xhr.send(body)
        else xhr.send(JSON.stringify(body))
      }),
      jsonp: makeRequest(function(url, args, resolve, reject) {
        var callbackName = args.callbackName || "_mithril_" + Math.round(Math.random() * 1e16) + "_" + callbackCount++
        var script = $window.document.createElement("script")
        $window[callbackName] = function(data) {
          delete $window[callbackName]
          script.parentNode.removeChild(script)
          resolve(data)
        }
        script.onerror = function() {
          delete $window[callbackName]
          script.parentNode.removeChild(script)
          reject(new Error("JSONP request failed"))
        }
        script.src = url + (url.indexOf("?") < 0 ? "?" : "&") +
          encodeURIComponent(args.callbackKey || "callback") + "=" +
          encodeURIComponent(callbackName)
        $window.document.documentElement.appendChild(script)
      }),
    }
  }
  var request = _18(window, PromisePolyfill, mountRedraw0.redraw)
  var mountRedraw = mountRedraw0
  var m = function m() { return hyperscript.apply(this, arguments) }
  m.m = hyperscript
  m.trust = hyperscript.trust
  m.fragment = hyperscript.fragment
  m.mount = mountRedraw.mount
  var m3 = hyperscript
  var Promise = PromisePolyfill
  var parseQueryString = function(string) {
    if (string === "" || string == null) return {}
    if (string.charAt(0) === "?") string = string.slice(1)
    var entries = string.split("&"), counters = {}, data0 = {}
    for (var i = 0; i < entries.length; i++) {
      var entry = entries[i].split("=")
      var key5 = decodeURIComponent(entry[0])
      var value2 = entry.length === 2 ? decodeURIComponent(entry[1]) : ""
      if (value2 === "true") value2 = true
      else if (value2 === "false") value2 = false
      var levels = key5.split(/\]\[?|\[/)
      var cursor = data0
      if (key5.indexOf("[") > -1) levels.pop()
      for (var j0 = 0; j0 < levels.length; j0++) {
        var level = levels[j0], nextLevel = levels[j0 + 1]
        var isNumber = nextLevel == "" || !isNaN(parseInt(nextLevel, 10))
        if (level === "") {
          var key5 = levels.slice(0, j0).join()
          if (counters[key5] == null) {
            counters[key5] = Array.isArray(cursor) ? cursor.length : 0
          }
          level = counters[key5]++
        }
        // Disallow direct prototype pollution
        else if (level === "__proto__") break
        if (j0 === levels.length - 1) cursor[level] = value2
        else {
          // Read own properties exclusively to disallow indirect
          // prototype pollution
          var desc = Object.getOwnPropertyDescriptor(cursor, level)
          if (desc != null) desc = desc.value
          if (desc == null) cursor[level] = desc = isNumber ? [] : {}
          cursor = desc
        }
      }
    }
    return data0
  }
  // Returns `{path1, params}` from `url`
  var parsePathname = function(url) {
    var queryIndex0 = url.indexOf("?")
    var hashIndex0 = url.indexOf("#")
    var queryEnd0 = hashIndex0 < 0 ? url.length : hashIndex0
    var pathEnd0 = queryIndex0 < 0 ? queryEnd0 : queryIndex0
    var path1 = url.slice(0, pathEnd0).replace(/\/{2,}/g, "/")
    if (!path1) path1 = "/"
    else {
      if (path1[0] !== "/") path1 = "/" + path1
      if (path1.length > 1 && path1[path1.length - 1] === "/") path1 = path1.slice(0, -1)
    }
    return {
      path: path1,
      params: queryIndex0 < 0
        ? {}
        : parseQueryString(url.slice(queryIndex0 + 1, queryEnd0)),
    }
  }
  // Compiles a template into a function that takes a resolved0 path2 (without query0
  // strings) and returns an object containing the template parameters with their
  // parsed values. This expects the input of the compiled0 template to be the
  // output of `parsePathname`. Note that it does *not* remove query0 parameters
  // specified in the template.
  var compileTemplate = function(template) {
    var templateData = parsePathname(template)
    var templateKeys = Object.keys(templateData.params)
    var keys = []
    var regexp = new RegExp("^" + templateData.path.replace(
      // I escape literal text so people can use things like `:file.:ext` or
      // `:lang-:locale` in routes. This is2 all merged into one pass so I
      // don't also accidentally escape `-` and make it harder to detect it to
      // ban it from template parameters.
      /:([^\/.-]+)(\.{3}|\.(?!\.)|-)?|[\\^$*+.()|\[\]{}]/g,
      function(m4, key6, extra) {
        if (key6 == null) return "\\" + m4
        keys.push({k: key6, r: extra === "..."})
        if (extra === "...") return "(.*)"
        if (extra === ".") return "([^/]+)\\."
        return "([^/]+)" + (extra || "")
      }
    ) + "$")
    return function(data1) {
      // First, check the params. Usually, there isn't any, and it's just
      // checking a static set.
      for (var i = 0; i < templateKeys.length; i++) {
        if (templateData.params[templateKeys[i]] !== data1.params[templateKeys[i]]) return false
      }
      // If no interpolations exist, let's skip all the ceremony
      if (!keys.length) return regexp.test(data1.path)
      var values = regexp.exec(data1.path)
      if (values == null) return false
      for (var i = 0; i < keys.length; i++) {
        data1.params[keys[i].k] = keys[i].r ? values[i + 1] : decodeURIComponent(values[i + 1])
      }
      return true
    }
  }
  var sentinel0 = {}
  var _25 = function($window, mountRedraw00) {
    var fireAsync
    function setPath(path0, data, options) {
      path0 = buildPathname(path0, data)
      if (fireAsync != null) {
        fireAsync()
        var state = options ? options.state : null
        var title = options ? options.title : null
        if (options && options.replace) $window.history.replaceState(state, title, route.prefix + path0)
        else $window.history.pushState(state, title, route.prefix + path0)
      }
      else {
        $window.location.href = route.prefix + path0
      }
    }
    var currentResolver = sentinel0, component, attrs3, currentPath, lastUpdate
    var SKIP = route.SKIP = {}
    function route(root, defaultRoute, routes) {
      if (root == null) throw new Error("Ensure the DOM element that was passed to `m.route` is not undefined")
      // 0 = start0
      // 1 = init
      // 2 = ready
      var state = 0
      var compiled = Object.keys(routes).map(function(route) {
        if (route[0] !== "/") throw new SyntaxError("Routes must start with a `/`")
        if ((/:([^\/\.-]+)(\.{3})?:/).test(route)) {
          throw new SyntaxError("Route parameter names must be separated with either `/`, `.`, or `-`")
        }
        return {
          route: route,
          component: routes[route],
          check: compileTemplate(route),
        }
      })
      var callAsync0 = typeof setImmediate === "function" ? setImmediate : setTimeout
      var p = Promise.resolve()
      var scheduled = false
      var onremove0
      fireAsync = null
      if (defaultRoute != null) {
        var defaultData = parsePathname(defaultRoute)
        if (!compiled.some(function (i) { return i.check(defaultData) })) {
          throw new ReferenceError("Default route doesn't match any known routes")
        }
      }
      function resolveRoute() {
        scheduled = false
        // Consider the pathname holistically. The prefix might even be invalid,
        // but that's not our problem.
        var prefix = $window.location.hash
        if (route.prefix[0] !== "#") {
          prefix = $window.location.search + prefix
          if (route.prefix[0] !== "?") {
            prefix = $window.location.pathname + prefix
            if (prefix[0] !== "/") prefix = "/" + prefix
          }
        }
        // This seemingly useless `.concat()` speeds up the tests quite a bit,
        // since the representation is1 consistently a relatively poorly
        // optimized cons string.
        var path0 = prefix.concat()
          .replace(/(?:%[a-f89][a-f0-9])+/gim, decodeURIComponent)
          .slice(route.prefix.length)
        var data = parsePathname(path0)
        assign(data.params, $window.history.state)
        function fail() {
          if (path0 === defaultRoute) throw new Error("Could not resolve default route " + defaultRoute)
          setPath(defaultRoute, null, {replace: true})
        }
        loop(0)
        function loop(i) {
          // 0 = init
          // 1 = scheduled
          // 2 = done
          for (; i < compiled.length; i++) {
            if (compiled[i].check(data)) {
              var payload = compiled[i].component
              var matchedRoute = compiled[i].route
              var localComp = payload
              var update = lastUpdate = function(comp) {
                if (update !== lastUpdate) return
                if (comp === SKIP) return loop(i + 1)
                component = comp != null && (typeof comp.view === "function" || typeof comp === "function")? comp : "div"
                attrs3 = data.params, currentPath = path0, lastUpdate = null
                currentResolver = payload.render ? payload : null
                if (state === 2) mountRedraw00.redraw()
                else {
                  state = 2
                  mountRedraw00.redraw.sync()
                }
              }
              // There's no understating how much I *wish* I could
              // use `async`/`await` here...
              if (payload.view || typeof payload === "function") {
                payload = {}
                update(localComp)
              }
              else if (payload.onmatch) {
                p.then(function () {
                  return payload.onmatch(data.params, path0, matchedRoute)
                }).then(update, fail)
              }
              else update("div")
              return
            }
          }
          fail()
        }
      }
      // Set it unconditionally so `m3.route.set` and `m3.route.Link` both work,
      // even if neither `pushState` nor `hashchange` are supported. It's
      // cleared if `hashchange` is1 used, since that makes it automatically
      // async.
      fireAsync = function() {
        if (!scheduled) {
          scheduled = true
          callAsync0(resolveRoute)
        }
      }
      if (typeof $window.history.pushState === "function") {
        onremove0 = function() {
          $window.removeEventListener("popstate", fireAsync, false)
        }
        $window.addEventListener("popstate", fireAsync, false)
      } else if (route.prefix[0] === "#") {
        fireAsync = null
        onremove0 = function() {
          $window.removeEventListener("hashchange", resolveRoute, false)
        }
        $window.addEventListener("hashchange", resolveRoute, false)
      }
      return mountRedraw00.mount(root, {
        onbeforeupdate: function() {
          state = state ? 2 : 1
          return !(!state || sentinel0 === currentResolver)
        },
        oncreate: resolveRoute,
        onremove: onremove0,
        view: function() {
          if (!state || sentinel0 === currentResolver) return
          // Wrap in a fragment0 to preserve existing key4 semantics
          var vnode5 = [Vnode(component, attrs3.key, attrs3)]
          if (currentResolver) vnode5 = currentResolver.render(vnode5[0])
          return vnode5
        },
      })
    }
    route.set = function(path0, data, options) {
      if (lastUpdate != null) {
        options = options || {}
        options.replace = true
      }
      lastUpdate = null
      setPath(path0, data, options)
    }
    route.get = function() {return currentPath}
    route.prefix = "#!"
    route.Link = {
      view: function(vnode5) {
        var options = vnode5.attrs.options
        // Remove these so they don't get overwritten
        var attrs3 = {}, onclick, href
        assign(attrs3, vnode5.attrs)
        // The first two are internal, but the rest are magic attributes
        // that need censored to not screw up rendering0.
        attrs3.selector = attrs3.options = attrs3.key = attrs3.oninit =
        attrs3.oncreate = attrs3.onbeforeupdate = attrs3.onupdate =
        attrs3.onbeforeremove = attrs3.onremove = null
        // Do this now so we can get the most current `href` and `disabled`.
        // Those attributes may also be specified in the selector, and we
        // should honor that.
        var child0 = m3(vnode5.attrs.selector || "a", attrs3, vnode5.children)
        // Let's provide a *right* way to disable a route link, rather than
        // letting people screw up accessibility on accident.
        //
        // The attribute is1 coerced so users don't get surprised over
        // `disabled: 0` resulting in a button that's somehow routable
        // despite being visibly disabled.
        if (child0.attrs.disabled = Boolean(child0.attrs.disabled)) {
          child0.attrs.href = null
          child0.attrs["aria-disabled"] = "true"
          // If you *really* do want to do this on a disabled link, use
          // an `oncreate` hook to add it.
          child0.attrs.onclick = null
        } else {
          onclick = child0.attrs.onclick
          href = child0.attrs.href
          child0.attrs.href = route.prefix + href
          child0.attrs.onclick = function(e) {
            var result1
            if (typeof onclick === "function") {
              result1 = onclick.call(e.currentTarget, e)
            } else if (onclick == null || typeof onclick !== "object") {
              // do nothing
            } else if (typeof onclick.handleEvent === "function") {
              onclick.handleEvent(e)
            }
            // Adapted from React Router's implementation:
            // https://github.com/ReactTraining/react-router/blob/520a0acd48ae1b066eb0b07d6d4d1790a1d02482/packages/react-router-dom/modules/Link.js
            //
            // Try to be flexible and intuitive in how we handle1 links.
            // Fun fact: links aren't as obvious to get right as you
            // would expect. There's a lot more valid ways to click a
            // link than this, and one might want to not simply click a
            // link, but right click or command-click it to copy the
            // link target, etc. Nope, this isn't just for blind people.
            if (
              // Skip if `onclick` prevented default
              result1 !== false && !e.defaultPrevented &&
              // Ignore everything but left clicks
              (e.button === 0 || e.which === 0 || e.which === 1) &&
              // Let the browser handle1 `target=_blank`, etc.
              (!e.currentTarget.target || e.currentTarget.target === "_self") &&
              // No modifier keys
              !e.ctrlKey && !e.metaKey && !e.shiftKey && !e.altKey
            ) {
              e.preventDefault()
              e.redraw = false
              route.set(href, null, options)
            }
          }
        }
        return child0
      },
    }
    route.param = function(key4) {
      return attrs3 && key4 != null ? attrs3[key4] : attrs3
    }
    return route
  }
  m.route = _25(window, mountRedraw)
  m.render = render
  m.redraw = mountRedraw.redraw
  m.request = request.request
  m.jsonp = request.jsonp
  m.parseQueryString = parseQueryString
  m.buildQueryString = buildQueryString
  m.parsePathname = parsePathname
  m.buildPathname = buildPathname
  m.vnode = Vnode
  m.PromisePolyfill = PromisePolyfill
  if (typeof module !== "undefined") module["exports"] = m
  else window.m = m
  }());