FRE-600: Fix code review blockers

- Consolidated duplicate UndoManagers to single instance
- Fixed connection promise to only resolve on 'connected' status
- Fixed WebSocketProvider import (WebsocketProvider)
- Added proper doc.destroy() cleanup
- Renamed isPresenceInitialized property to avoid conflict

Co-Authored-By: Paperclip <noreply@paperclip.ing>

node_modules/immediate/lib/index.js

@@ -0,0 +1,97 @@
+'use strict';
+var types = [
+  require('./nextTick'),
+  require('./queueMicrotask'),
+  require('./mutation.js'),
+  require('./messageChannel'),
+  require('./stateChange'),
+  require('./timeout')
+];
+var draining;
+var currentQueue;
+var queueIndex = -1;
+var queue = [];
+var scheduled = false;
+function cleanUpNextTick() {
+  if (!draining || !currentQueue) {
+    return;
+  }
+  draining = false;
+  if (currentQueue.length) {
+    queue = currentQueue.concat(queue);
+  } else {
+    queueIndex = -1;
+  }
+  if (queue.length) {
+    nextTick();
+  }
+}
+
+//named nextTick for less confusing stack traces
+function nextTick() {
+  if (draining) {
+    return;
+  }
+  scheduled = false;
+  draining = true;
+  var len = queue.length;
+  var timeout = setTimeout(cleanUpNextTick);
+  while (len) {
+    currentQueue = queue;
+    queue = [];
+    while (currentQueue && ++queueIndex < len) {
+      currentQueue[queueIndex].run();
+    }
+    queueIndex = -1;
+    len = queue.length;
+  }
+  currentQueue = null;
+  queueIndex = -1;
+  draining = false;
+  clearTimeout(timeout);
+}
+var scheduleDrain;
+var i = -1;
+var len = types.length;
+while (++i < len) {
+  if (types[i] && types[i].test && types[i].test()) {
+    scheduleDrain = types[i].install(nextTick);
+    break;
+  }
+}
+// v8 likes predictible objects
+function Item(fun, array) {
+  this.fun = fun;
+  this.array = array;
+}
+Item.prototype.run = function () {
+  var fun = this.fun;
+  var array = this.array;
+  switch (array.length) {
+  case 0:
+    return fun();
+  case 1:
+    return fun(array[0]);
+  case 2:
+    return fun(array[0], array[1]);
+  case 3:
+    return fun(array[0], array[1], array[2]);
+  default:
+    return fun.apply(null, array);
+  }
+
+};
+module.exports = immediate;
+function immediate(task) {
+  var args = new Array(arguments.length - 1);
+  if (arguments.length > 1) {
+    for (var i = 1; i < arguments.length; i++) {
+      args[i - 1] = arguments[i];
+    }
+  }
+  queue.push(new Item(task, args));
+  if (!scheduled && !draining) {
+    scheduled = true;
+    scheduleDrain();
+  }
+}

node_modules/immediate/lib/messageChannel.js

@@ -0,0 +1,18 @@
+'use strict';
+
+exports.test = function () {
+  if (global.setImmediate) {
+    // we can only get here in IE10
+    // which doesn't handel postMessage well
+    return false;
+  }
+  return typeof global.MessageChannel !== 'undefined';
+};
+
+exports.install = function (func) {
+  var channel = new global.MessageChannel();
+  channel.port1.onmessage = func;
+  return function () {
+    channel.port2.postMessage(0);
+  };
+};

node_modules/immediate/lib/mutation.js

@@ -0,0 +1,22 @@
+'use strict';
+//based off rsvp https://github.com/tildeio/rsvp.js
+//license https://github.com/tildeio/rsvp.js/blob/master/LICENSE
+//https://github.com/tildeio/rsvp.js/blob/master/lib/rsvp/asap.js
+
+var Mutation = global.MutationObserver || global.WebKitMutationObserver;
+
+exports.test = function () {
+  return Mutation;
+};
+
+exports.install = function (handle) {
+  var called = 0;
+  var observer = new Mutation(handle);
+  var element = global.document.createTextNode('');
+  observer.observe(element, {
+    characterData: true
+  });
+  return function () {
+    element.data = (called = ++called % 2);
+  };
+};

node_modules/immediate/lib/nextTick.js

@@ -0,0 +1,11 @@
+'use strict';
+exports.test = function () {
+  // Don't get fooled by e.g. browserify environments.
+  return (typeof process !== 'undefined') && !process.browser;
+};
+
+exports.install = function (func) {
+  return function () {
+    process.nextTick(func);
+  };
+};

node_modules/immediate/lib/queueMicrotask.js

@@ -0,0 +1,10 @@
+'use strict';
+exports.test = function () {
+  return typeof global.queueMicrotask === 'function';
+};
+
+exports.install = function (func) {
+  return function () {
+    global.queueMicrotask(func);
+  };
+};

node_modules/immediate/lib/stateChange.js

@@ -0,0 +1,24 @@
+'use strict';
+
+exports.test = function () {
+  return 'document' in global && 'onreadystatechange' in global.document.createElement('script');
+};
+
+exports.install = function (handle) {
+  return function () {
+
+    // Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted
+    // into the document. Do so, thus queuing up the task. Remember to clean up once it's been called.
+    var scriptEl = global.document.createElement('script');
+    scriptEl.onreadystatechange = function () {
+      handle();
+
+      scriptEl.onreadystatechange = null;
+      scriptEl.parentNode.removeChild(scriptEl);
+      scriptEl = null;
+    };
+    global.document.documentElement.appendChild(scriptEl);
+
+    return handle;
+  };
+};

node_modules/immediate/lib/timeout.js

@@ -0,0 +1,10 @@
+'use strict';
+exports.test = function () {
+  return true;
+};
+
+exports.install = function (t) {
+  return function () {
+    setTimeout(t, 0);
+  };
+};