use submodule

excalidraw/excalidraw-app/collab/Collab.tsx

@@ -1,28 +1,55 @@
-import throttle from "lodash.throttle";
-import { PureComponent } from "react";
-import {
-  ExcalidrawImperativeAPI,
-  SocketId,
-} from "../../packages/excalidraw/types";
-import { ErrorDialog } from "../../packages/excalidraw/components/ErrorDialog";
-import { APP_NAME, ENV, EVENT } from "../../packages/excalidraw/constants";
-import { ImportedDataState } from "../../packages/excalidraw/data/types";
-import {
-  ExcalidrawElement,
-  InitializedExcalidrawImageElement,
-} from "../../packages/excalidraw/element/types";
 import {
+  CaptureUpdateAction,
   getSceneVersion,
   restoreElements,
   zoomToFitBounds,
-} from "../../packages/excalidraw/index";
-import { Collaborator, Gesture } from "../../packages/excalidraw/types";
+  reconcileElements,
+} from "@excalidraw/excalidraw";
+import { ErrorDialog } from "@excalidraw/excalidraw/components/ErrorDialog";
+import { APP_NAME, EVENT } from "@excalidraw/common";
 import {
+  IDLE_THRESHOLD,
+  ACTIVE_THRESHOLD,
+  UserIdleState,
   assertNever,
+  isDevEnv,
+  isTestEnv,
   preventUnload,
   resolvablePromise,
   throttleRAF,
-} from "../../packages/excalidraw/utils";
+} from "@excalidraw/common";
+import { decryptData } from "@excalidraw/excalidraw/data/encryption";
+import { getVisibleSceneBounds } from "@excalidraw/element";
+import { newElementWith } from "@excalidraw/element";
+import { isImageElement, isInitializedImageElement } from "@excalidraw/element";
+import { AbortError } from "@excalidraw/excalidraw/errors";
+import { t } from "@excalidraw/excalidraw/i18n";
+import { withBatchedUpdates } from "@excalidraw/excalidraw/reactUtils";
+
+import throttle from "lodash.throttle";
+import { PureComponent } from "react";
+
+import type {
+  ReconciledExcalidrawElement,
+  RemoteExcalidrawElement,
+} from "@excalidraw/excalidraw/data/reconcile";
+import type { ImportedDataState } from "@excalidraw/excalidraw/data/types";
+import type {
+  ExcalidrawElement,
+  FileId,
+  InitializedExcalidrawImageElement,
+  OrderedExcalidrawElement,
+} from "@excalidraw/element/types";
+import type {
+  BinaryFileData,
+  ExcalidrawImperativeAPI,
+  SocketId,
+  Collaborator,
+  Gesture,
+} from "@excalidraw/excalidraw/types";
+import type { Mutable, ValueOf } from "@excalidraw/common/utility-types";
+
+import { appJotaiStore, atom } from "../app-jotai";
 import {
   CURSOR_SYNC_TIMEOUT,
   FILE_UPLOAD_MAX_BYTES,
@@ -37,9 +64,13 @@ import {
   generateCollaborationLinkData,
   getCollaborationLink,
   getSyncableElements,
-  SocketUpdateDataSource,
-  SyncableExcalidrawElement,
 } from "../data";
+import {
+  encodeFilesForUpload,
+  FileManager,
+  updateStaleImageStatuses,
+} from "../data/FileManager";
+import { LocalData } from "../data/LocalData";
 import {
   isSavedToFirebase,
   loadFilesFromFirebase,
@@ -51,37 +82,15 @@ import {
   importUsernameFromLocalStorage,
   saveUsernameToLocalStorage,
 } from "../data/localStorage";
-import Portal from "./Portal";
-import { t } from "../../packages/excalidraw/i18n";
-import { UserIdleState } from "../../packages/excalidraw/types";
-import {
-  IDLE_THRESHOLD,
-  ACTIVE_THRESHOLD,
-} from "../../packages/excalidraw/constants";
-import {
-  encodeFilesForUpload,
-  FileManager,
-  updateStaleImageStatuses,
-} from "../data/FileManager";
-import { AbortError } from "../../packages/excalidraw/errors";
-import {
-  isImageElement,
-  isInitializedImageElement,
-} from "../../packages/excalidraw/element/typeChecks";
-import { newElementWith } from "../../packages/excalidraw/element/mutateElement";
-import {
-  ReconciledElements,
-  reconcileElements as _reconcileElements,
-} from "./reconciliation";
-import { decryptData } from "../../packages/excalidraw/data/encryption";
 import { resetBrowserStateVersions } from "../data/tabSync";
-import { LocalData } from "../data/LocalData";
-import { atom } from "jotai";
-import { appJotaiStore } from "../app-jotai";
-import { Mutable, ValueOf } from "../../packages/excalidraw/utility-types";
-import { getVisibleSceneBounds } from "../../packages/excalidraw/element/bounds";
-import { withBatchedUpdates } from "../../packages/excalidraw/reactUtils";
-import { collabErrorIndicatorAtom } from "./CollabError"; 
+
+import { collabErrorIndicatorAtom } from "./CollabError";
+import Portal from "./Portal";
+
+import type {
+  SocketUpdateDataSource,
+  SyncableExcalidrawElement,
+} from "../data";
 
 export const collabAPIAtom = atom<CollabAPI | null>(null);
 export const isCollaboratingAtom = atom(false);
@@ -152,7 +161,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
           throw new AbortError();
         }
 
-        return saveFilesToFirebase({
+        const { savedFiles, erroredFiles } = await saveFilesToFirebase({
           prefix: `${FIREBASE_STORAGE_PREFIXES.collabFiles}/${roomId}`,
           files: await encodeFilesForUpload({
             files: addedFiles,
@@ -160,6 +169,29 @@ class Collab extends PureComponent<CollabProps, CollabState> {
             maxBytes: FILE_UPLOAD_MAX_BYTES,
           }),
         });
+
+        return {
+          savedFiles: savedFiles.reduce(
+            (acc: Map<FileId, BinaryFileData>, id) => {
+              const fileData = addedFiles.get(id);
+              if (fileData) {
+                acc.set(id, fileData);
+              }
+              return acc;
+            },
+            new Map(),
+          ),
+          erroredFiles: erroredFiles.reduce(
+            (acc: Map<FileId, BinaryFileData>, id) => {
+              const fileData = addedFiles.get(id);
+              if (fileData) {
+                acc.set(id, fileData);
+              }
+              return acc;
+            },
+            new Map(),
+          ),
+        };
       },
     });
     this.excalidrawAPI = props.excalidrawAPI;
@@ -204,9 +236,9 @@ class Collab extends PureComponent<CollabProps, CollabState> {
       setCollabError: this.setErrorDialog,
     };
 
-    appJotaiStore.set(collabAPIAtom, collabAPI as any);
+    appJotaiStore.set(collabAPIAtom, collabAPI);
 
-    if (import.meta.env.MODE === ENV.TEST || import.meta.env.DEV) {
+    if (isTestEnv() || isDevEnv()) {
       window.collab = window.collab || ({} as Window["collab"]);
       Object.defineProperties(window, {
         collab: {
@@ -218,7 +250,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
   }
 
   onOfflineStatusToggle = () => {
-    appJotaiStore.set(isOfflineAtom, !window.navigator.onLine as any);
+    appJotaiStore.set(isOfflineAtom, !window.navigator.onLine);
   };
 
   componentWillUnmount() {
@@ -245,7 +277,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
   isCollaborating = () => appJotaiStore.get(isCollaboratingAtom)!;
 
   private setIsCollaborating = (isCollaborating: boolean) => {
-    appJotaiStore.set(isCollaboratingAtom, isCollaborating as any);
+    appJotaiStore.set(isCollaboratingAtom, isCollaborating);
   };
 
   private onUnload = () => {
@@ -266,7 +298,13 @@ class Collab extends PureComponent<CollabProps, CollabState> {
       //  the purpose is to run in immediately after user decides to stay
       this.saveCollabRoomToFirebase(syncableElements);
 
-      preventUnload(event);
+      if (import.meta.env.VITE_APP_DISABLE_PREVENT_UNLOAD !== "true") {
+        preventUnload(event);
+      } else {
+        console.warn(
+          "preventing unload disabled (VITE_APP_DISABLE_PREVENT_UNLOAD)",
+        );
+      }
     }
   });
 
@@ -274,7 +312,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
     syncableElements: readonly SyncableExcalidrawElement[],
   ) => {
     try {
-      const savedData = await saveToFirebase(
+      const storedElements = await saveToFirebase(
         this.portal,
         syncableElements,
         this.excalidrawAPI.getAppState(),
@@ -282,10 +320,8 @@ class Collab extends PureComponent<CollabProps, CollabState> {
 
       this.resetErrorIndicator();
 
-      if (this.isCollaborating() && savedData && savedData.reconciledElements) {
-        this.handleRemoteSceneUpdate(
-          this.reconcileElements(savedData.reconciledElements),
-        );
+      if (this.isCollaborating() && storedElements) {
+        this.handleRemoteSceneUpdate(this._reconcileElements(storedElements));
       }
     } catch (error: any) {
       const errorMessage = /is longer than.*?bytes/.test(error.message)
@@ -356,7 +392,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
 
       this.excalidrawAPI.updateScene({
         elements,
-        commitToHistory: false,
+        captureUpdate: CaptureUpdateAction.NEVER,
       });
     }
   };
@@ -391,7 +427,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
       .filter((element) => {
         return (
           isInitializedImageElement(element) &&
-          !this.fileManager.isFileHandled(element.fileId) &&
+          !this.fileManager.isFileTracked(element.fileId) &&
           !element.isDeleted &&
           (opts.forceFetchFiles
             ? element.status !== "pending" ||
@@ -429,7 +465,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
 
   startCollaboration = async (
     existingRoomLinkData: null | { roomId: string; roomKey: string },
-  ): Promise<ImportedDataState | null> => {
+  ) => {
     if (!this.state.username) {
       import("@excalidraw/random-username").then(({ getRandomUsername }) => {
         const username = getRandomUsername();
@@ -455,7 +491,11 @@ class Collab extends PureComponent<CollabProps, CollabState> {
       );
     }
 
-    const scenePromise = resolvablePromise<ImportedDataState | null>();
+    // TODO: `ImportedDataState` type here seems abused
+    const scenePromise = resolvablePromise<
+      | (ImportedDataState & { elements: readonly OrderedExcalidrawElement[] })
+      | null
+    >();
 
     this.setIsCollaborating(true);
     LocalData.pauseSave("collaboration");
@@ -497,14 +537,13 @@ class Collab extends PureComponent<CollabProps, CollabState> {
         }
         return element;
       });
-      // remove deleted elements from elements array & history to ensure we don't
+      // remove deleted elements from elements array to ensure we don't
       // expose potentially sensitive user data in case user manually deletes
       // existing elements (or clears scene), which would otherwise be persisted
       // to database even if deleted before creating the room.
-      this.excalidrawAPI.history.clear();
       this.excalidrawAPI.updateScene({
         elements,
-        commitToHistory: true,
+        captureUpdate: CaptureUpdateAction.NEVER,
       });
 
       this.saveCollabRoomToFirebase(getSyncableElements(elements));
@@ -538,10 +577,9 @@ class Collab extends PureComponent<CollabProps, CollabState> {
             if (!this.portal.socketInitialized) {
               this.initializeRoom({ fetchScene: false });
               const remoteElements = decryptedData.payload.elements;
-              const reconciledElements = this.reconcileElements(remoteElements);
-              this.handleRemoteSceneUpdate(reconciledElements, {
-                init: true,
-              });
+              const reconciledElements =
+                this._reconcileElements(remoteElements);
+              this.handleRemoteSceneUpdate(reconciledElements);
               // noop if already resolved via init from firebase
               scenePromise.resolve({
                 elements: reconciledElements,
@@ -552,7 +590,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
           }
           case WS_SUBTYPES.UPDATE:
             this.handleRemoteSceneUpdate(
-              this.reconcileElements(decryptedData.payload.elements),
+              this._reconcileElements(decryptedData.payload.elements),
             );
             break;
           case WS_SUBTYPES.MOUSE_LOCATION: {
@@ -700,17 +738,15 @@ class Collab extends PureComponent<CollabProps, CollabState> {
     return null;
   };
 
-  private reconcileElements = (
+  private _reconcileElements = (
     remoteElements: readonly ExcalidrawElement[],
-  ): ReconciledElements => {
+  ): ReconciledExcalidrawElement[] => {
     const localElements = this.getSceneElementsIncludingDeleted();
     const appState = this.excalidrawAPI.getAppState();
-
-    remoteElements = restoreElements(remoteElements, null);
-
-    const reconciledElements = _reconcileElements(
+    const restoredRemoteElements = restoreElements(remoteElements, null);
+    const reconciledElements = reconcileElements(
       localElements,
-      remoteElements,
+      restoredRemoteElements as RemoteExcalidrawElement[],
       appState,
     );
 
@@ -741,20 +777,13 @@ class Collab extends PureComponent<CollabProps, CollabState> {
   }, LOAD_IMAGES_TIMEOUT);
 
   private handleRemoteSceneUpdate = (
-    elements: ReconciledElements,
-    { init = false }: { init?: boolean } = {},
+    elements: ReconciledExcalidrawElement[],
   ) => {
     this.excalidrawAPI.updateScene({
       elements,
-      commitToHistory: !!init,
+      captureUpdate: CaptureUpdateAction.NEVER,
     });
 
-    // We haven't yet implemented multiplayer undo functionality, so we clear the undo stack
-    // when we receive any messages from another peer. This UX can be pretty rough -- if you
-    // undo, a user makes a change, and then try to redo, your element(s) will be lost. However,
-    // right now we think this is the right tradeoff.
-    this.excalidrawAPI.history.clear();
-
     this.loadImageFiles();
   };
 
@@ -887,7 +916,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
     this.portal.broadcastIdleChange(userState);
   };
 
-  broadcastElements = (elements: readonly ExcalidrawElement[]) => {
+  broadcastElements = (elements: readonly OrderedExcalidrawElement[]) => {
     if (
       getSceneVersion(elements) >
       this.getLastBroadcastedOrReceivedSceneVersion()
@@ -898,7 +927,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
     }
   };
 
-  syncElements = (elements: readonly ExcalidrawElement[]) => {
+  syncElements = (elements: readonly OrderedExcalidrawElement[]) => {
     this.broadcastElements(elements);
     this.queueSaveToFirebase();
   };
@@ -940,7 +969,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
 
   setActiveRoomLink = (activeRoomLink: string | null) => {
     this.setState({ activeRoomLink });
-    appJotaiStore.set(activeRoomLinkAtom, activeRoomLink as any);
+    appJotaiStore.set(activeRoomLinkAtom, activeRoomLink);
   };
 
   getActiveRoomLink = () => this.state.activeRoomLink;
@@ -949,11 +978,11 @@ class Collab extends PureComponent<CollabProps, CollabState> {
     appJotaiStore.set(collabErrorIndicatorAtom, {
       message: errorMessage,
       nonce: Date.now(),
-    } as any);
+    });
   };
 
   resetErrorIndicator = (resetDialogNotifiedErrors = false) => {
-    appJotaiStore.set(collabErrorIndicatorAtom, { message: null, nonce: 0 } as any);
+    appJotaiStore.set(collabErrorIndicatorAtom, { message: null, nonce: 0 });
     if (resetDialogNotifiedErrors) {
       this.setState({
         dialogNotifiedErrors: {},
@@ -988,7 +1017,7 @@ declare global {
   }
 }
 
-if (import.meta.env.MODE === ENV.TEST || import.meta.env.DEV) {
+if (isTestEnv() || isDevEnv()) {
   window.collab = window.collab || ({} as Window["collab"]);
 }
 

excalidraw/excalidraw-app/collab/CollabError.scss

@@ -23,7 +23,7 @@
       transform: rotate(10deg);
     }
     50% {
-      transform: rotate(0eg);
+      transform: rotate(0deg);
     }
     75% {
       transform: rotate(-10deg);

excalidraw/excalidraw-app/collab/CollabError.tsx

@@ -1,39 +1,35 @@
-import { Tooltip } from "../../packages/excalidraw/components/Tooltip";
-import { warning } from "../../packages/excalidraw/components/icons";
+import { Tooltip } from "@excalidraw/excalidraw/components/Tooltip";
+import { warning } from "@excalidraw/excalidraw/components/icons";
 import clsx from "clsx";
 import { useEffect, useRef, useState } from "react";
 
-import "./CollabError.scss";
-import { atom } from "jotai";
+import { atom } from "../app-jotai";
 
-export type ErrorIndicator = {
+import "./CollabError.scss";
+
+type ErrorIndicator = {
   message: string | null;
   /** used to rerun the useEffect responsible for animation */
   nonce: number;
 };
 
-const _collabErrorIndicatorAtom = atom<ErrorIndicator>({
+export const collabErrorIndicatorAtom = atom<ErrorIndicator>({
   message: null,
   nonce: 0,
 });
 
-export const collabErrorIndicatorAtom = atom(
-  (get) => get(_collabErrorIndicatorAtom),
-  (get, set, update: ErrorIndicator) => set(_collabErrorIndicatorAtom, update),
-);
-
 const CollabError = ({ collabError }: { collabError: ErrorIndicator }) => {
   const [isAnimating, setIsAnimating] = useState(false);
-  const clearAnimationRef = useRef<string | number | NodeJS.Timeout>();
+  const clearAnimationRef = useRef<string | number>(0);
 
   useEffect(() => {
     setIsAnimating(true);
-    clearAnimationRef.current = setTimeout(() => {
+    clearAnimationRef.current = window.setTimeout(() => {
       setIsAnimating(false);
     }, 1000);
 
     return () => {
-      clearTimeout(clearAnimationRef.current);
+      window.clearTimeout(clearAnimationRef.current);
     };
   }, [collabError.message, collabError.nonce]);
 

excalidraw/excalidraw-app/collab/Portal.tsx

@@ -1,24 +1,25 @@
-import {
-  isSyncableElement,
-  SocketUpdateData,
-  SocketUpdateDataSource,
-} from "../data";
+import { CaptureUpdateAction } from "@excalidraw/excalidraw";
+import { trackEvent } from "@excalidraw/excalidraw/analytics";
+import { encryptData } from "@excalidraw/excalidraw/data/encryption";
+import { newElementWith } from "@excalidraw/element";
+import throttle from "lodash.throttle";
 
-import { TCollabClass } from "./Collab";
-
-import { ExcalidrawElement } from "../../packages/excalidraw/element/types";
-import { WS_EVENTS, FILE_UPLOAD_TIMEOUT, WS_SUBTYPES } from "../app_constants";
-import {
+import type { UserIdleState } from "@excalidraw/common";
+import type { OrderedExcalidrawElement } from "@excalidraw/element/types";
+import type {
   OnUserFollowedPayload,
   SocketId,
-  UserIdleState,
-} from "../../packages/excalidraw/types";
-import { trackEvent } from "../../packages/excalidraw/analytics";
-import throttle from "lodash.throttle";
-import { newElementWith } from "../../packages/excalidraw/element/mutateElement";
-import { BroadcastedExcalidrawElement } from "./reconciliation";
-import { encryptData } from "../../packages/excalidraw/data/encryption";
-import { PRECEDING_ELEMENT_KEY } from "../../packages/excalidraw/constants";
+} from "@excalidraw/excalidraw/types";
+
+import { WS_EVENTS, FILE_UPLOAD_TIMEOUT, WS_SUBTYPES } from "../app_constants";
+import { isSyncableElement } from "../data";
+
+import type {
+  SocketUpdateData,
+  SocketUpdateDataSource,
+  SyncableExcalidrawElement,
+} from "../data";
+import type { TCollabClass } from "./Collab";
 import type { Socket } from "socket.io-client";
 
 class Portal {
@@ -116,24 +117,31 @@ class Portal {
       }
     }
 
-    this.collab.excalidrawAPI.updateScene({
-      elements: this.collab.excalidrawAPI
-        .getSceneElementsIncludingDeleted()
-        .map((element) => {
-          if (this.collab.fileManager.shouldUpdateImageElementStatus(element)) {
-            // this will signal collaborators to pull image data from server
-            // (using mutation instead of newElementWith otherwise it'd break
-            // in-progress dragging)
-            return newElementWith(element, { status: "saved" });
-          }
-          return element;
-        }),
-    });
+    let isChanged = false;
+    const newElements = this.collab.excalidrawAPI
+      .getSceneElementsIncludingDeleted()
+      .map((element) => {
+        if (this.collab.fileManager.shouldUpdateImageElementStatus(element)) {
+          isChanged = true;
+          // this will signal collaborators to pull image data from server
+          // (using mutation instead of newElementWith otherwise it'd break
+          // in-progress dragging)
+          return newElementWith(element, { status: "saved" });
+        }
+        return element;
+      });
+
+    if (isChanged) {
+      this.collab.excalidrawAPI.updateScene({
+        elements: newElements,
+        captureUpdate: CaptureUpdateAction.NEVER,
+      });
+    }
   }, FILE_UPLOAD_TIMEOUT);
 
   broadcastScene = async (
     updateType: WS_SUBTYPES.INIT | WS_SUBTYPES.UPDATE,
-    allElements: readonly ExcalidrawElement[],
+    elements: readonly OrderedExcalidrawElement[],
     syncAll: boolean,
   ) => {
     if (updateType === WS_SUBTYPES.INIT && !syncAll) {
@@ -143,25 +151,17 @@ class Portal {
     // sync out only the elements we think we need to to save bandwidth.
     // periodically we'll resync the whole thing to make sure no one diverges
     // due to a dropped message (server goes down etc).
-    const syncableElements = allElements.reduce(
-      (acc, element: BroadcastedExcalidrawElement, idx, elements) => {
-        if (
-          (syncAll ||
-            !this.broadcastedElementVersions.has(element.id) ||
-            element.version >
-              this.broadcastedElementVersions.get(element.id)!) &&
-          isSyncableElement(element)
-        ) {
-          acc.push({
-            ...element,
-            // z-index info for the reconciler
-            [PRECEDING_ELEMENT_KEY]: idx === 0 ? "^" : elements[idx - 1]?.id,
-          });
-        }
-        return acc;
-      },
-      [] as BroadcastedExcalidrawElement[],
-    );
+    const syncableElements = elements.reduce((acc, element) => {
+      if (
+        (syncAll ||
+          !this.broadcastedElementVersions.has(element.id) ||
+          element.version > this.broadcastedElementVersions.get(element.id)!) &&
+        isSyncableElement(element)
+      ) {
+        acc.push(element);
+      }
+      return acc;
+    }, [] as SyncableExcalidrawElement[]);
 
     const data: SocketUpdateDataSource[typeof updateType] = {
       type: updateType,

excalidraw/excalidraw-app/collab/RoomDialog.tsx

@@ -1,218 +0,0 @@
-import { useRef, useState } from "react";
-import * as Popover from "@radix-ui/react-popover";
-
-import { copyTextToSystemClipboard } from "../../packages/excalidraw/clipboard";
-import { trackEvent } from "../../packages/excalidraw/analytics";
-import { getFrame } from "../../packages/excalidraw/utils";
-import { useI18n } from "../../packages/excalidraw/i18n";
-import { KEYS } from "../../packages/excalidraw/keys";
-
-import { Dialog } from "../../packages/excalidraw/components/Dialog";
-import {
-  copyIcon,
-  playerPlayIcon,
-  playerStopFilledIcon,
-  share,
-  shareIOS,
-  shareWindows,
-  tablerCheckIcon,
-} from "../../packages/excalidraw/components/icons";
-import { TextField } from "../../packages/excalidraw/components/TextField";
-import { FilledButton } from "../../packages/excalidraw/components/FilledButton";
-
-import { ReactComponent as CollabImage } from "../../packages/excalidraw/assets/lock.svg";
-import "./RoomDialog.scss";
-
-const getShareIcon = () => {
-  const navigator = window.navigator as any;
-  const isAppleBrowser = /Apple/.test(navigator.vendor);
-  const isWindowsBrowser = navigator.appVersion.indexOf("Win") !== -1;
-
-  if (isAppleBrowser) {
-    return shareIOS;
-  } else if (isWindowsBrowser) {
-    return shareWindows;
-  }
-
-  return share;
-};
-
-export type RoomModalProps = {
-  handleClose: () => void;
-  activeRoomLink: string;
-  username: string;
-  onUsernameChange: (username: string) => void;
-  onRoomCreate: () => void;
-  onRoomDestroy: () => void;
-  setErrorMessage: (message: string) => void;
-};
-
-export const RoomModal = ({
-  activeRoomLink,
-  onRoomCreate,
-  onRoomDestroy,
-  setErrorMessage,
-  username,
-  onUsernameChange,
-  handleClose,
-}: RoomModalProps) => {
-  const { t } = useI18n();
-  const [justCopied, setJustCopied] = useState(false);
-  const timerRef = useRef<number>(0);
-  const ref = useRef<HTMLInputElement>(null);
-  const isShareSupported = "share" in navigator;
-
-  const copyRoomLink = async () => {
-    try {
-      await copyTextToSystemClipboard(activeRoomLink);
-    } catch (e) {
-      setErrorMessage(t("errors.copyToSystemClipboardFailed"));
-    }
-    setJustCopied(true);
-
-    if (timerRef.current) {
-      window.clearTimeout(timerRef.current);
-    }
-
-    timerRef.current = window.setTimeout(() => {
-      setJustCopied(false);
-    }, 3000);
-
-    ref.current?.select();
-  };
-
-  const shareRoomLink = async () => {
-    try {
-      await navigator.share({
-        title: t("roomDialog.shareTitle"),
-        text: t("roomDialog.shareTitle"),
-        url: activeRoomLink,
-      });
-    } catch (error: any) {
-      // Just ignore.
-    }
-  };
-
-  if (activeRoomLink) {
-    return (
-      <>
-        <h3 className="RoomDialog__active__header">
-          {t("labels.liveCollaboration")}
-        </h3>
-        <TextField
-          value={username}
-          placeholder="Your name"
-          label="Your name"
-          onChange={onUsernameChange}
-          onKeyDown={(event) => event.key === KEYS.ENTER && handleClose()}
-        />
-        <div className="RoomDialog__active__linkRow">
-          <TextField
-            ref={ref}
-            label="Link"
-            readonly
-            fullWidth
-            value={activeRoomLink}
-          />
-          {isShareSupported && (
-            <FilledButton
-              size="large"
-              variant="icon"
-              label="Share"
-              icon={getShareIcon()}
-              className="RoomDialog__active__share"
-              onClick={shareRoomLink}
-            />
-          )}
-          <Popover.Root open={justCopied}>
-            <Popover.Trigger asChild>
-              <FilledButton
-                size="large"
-                label="Copy link"
-                icon={copyIcon}
-                onClick={copyRoomLink}
-              />
-            </Popover.Trigger>
-            <Popover.Content
-              onOpenAutoFocus={(event) => event.preventDefault()}
-              onCloseAutoFocus={(event) => event.preventDefault()}
-              className="RoomDialog__popover"
-              side="top"
-              align="end"
-              sideOffset={5.5}
-            >
-              {tablerCheckIcon} copied
-            </Popover.Content>
-          </Popover.Root>
-        </div>
-        <div className="RoomDialog__active__description">
-          <p>
-            <span
-              role="img"
-              aria-hidden="true"
-              className="RoomDialog__active__description__emoji"
-            >
-              🔒{" "}
-            </span>
-            {t("roomDialog.desc_privacy")}
-          </p>
-          <p>{t("roomDialog.desc_exitSession")}</p>
-        </div>
-
-        <div className="RoomDialog__active__actions">
-          <FilledButton
-            size="large"
-            variant="outlined"
-            color="danger"
-            label={t("roomDialog.button_stopSession")}
-            icon={playerStopFilledIcon}
-            onClick={() => {
-              trackEvent("share", "room closed");
-              onRoomDestroy();
-            }}
-          />
-        </div>
-      </>
-    );
-  }
-
-  return (
-    <>
-      <div className="RoomDialog__inactive__illustration">
-        <CollabImage />
-      </div>
-      <div className="RoomDialog__inactive__header">
-        {t("labels.liveCollaboration")}
-      </div>
-
-      <div className="RoomDialog__inactive__description">
-        <strong>{t("roomDialog.desc_intro")}</strong>
-        {t("roomDialog.desc_privacy")}
-      </div>
-
-      <div className="RoomDialog__inactive__start_session">
-        <FilledButton
-          size="large"
-          label={t("roomDialog.button_startSession")}
-          icon={playerPlayIcon}
-          onClick={() => {
-            trackEvent("share", "room creation", `ui (${getFrame()})`);
-            onRoomCreate();
-          }}
-        />
-      </div>
-    </>
-  );
-};
-
-const RoomDialog = (props: RoomModalProps) => {
-  return (
-    <Dialog size="small" onCloseRequest={props.handleClose} title={false}>
-      <div className="RoomDialog">
-        <RoomModal {...props} />
-      </div>
-    </Dialog>
-  );
-};
-
-export default RoomDialog;

excalidraw/excalidraw-app/collab/reconciliation.ts

@@ -1,154 +0,0 @@
-import { PRECEDING_ELEMENT_KEY } from "../../packages/excalidraw/constants";
-import { ExcalidrawElement } from "../../packages/excalidraw/element/types";
-import { AppState } from "../../packages/excalidraw/types";
-import { arrayToMapWithIndex } from "../../packages/excalidraw/utils";
-
-export type ReconciledElements = readonly ExcalidrawElement[] & {
-  _brand: "reconciledElements";
-};
-
-export type BroadcastedExcalidrawElement = ExcalidrawElement & {
-  [PRECEDING_ELEMENT_KEY]?: string;
-};
-
-const shouldDiscardRemoteElement = (
-  localAppState: AppState,
-  local: ExcalidrawElement | undefined,
-  remote: BroadcastedExcalidrawElement,
-): boolean => {
-  if (
-    local &&
-    // local element is being edited
-    (local.id === localAppState.editingElement?.id ||
-      local.id === localAppState.resizingElement?.id ||
-      local.id === localAppState.draggingElement?.id ||
-      // local element is newer
-      local.version > remote.version ||
-      // resolve conflicting edits deterministically by taking the one with
-      // the lowest versionNonce
-      (local.version === remote.version &&
-        local.versionNonce < remote.versionNonce))
-  ) {
-    return true;
-  }
-  return false;
-};
-
-export const reconcileElements = (
-  localElements: readonly ExcalidrawElement[],
-  remoteElements: readonly BroadcastedExcalidrawElement[],
-  localAppState: AppState,
-): ReconciledElements => {
-  const localElementsData =
-    arrayToMapWithIndex<ExcalidrawElement>(localElements);
-
-  const reconciledElements: ExcalidrawElement[] = localElements.slice();
-
-  const duplicates = new WeakMap<ExcalidrawElement, true>();
-
-  let cursor = 0;
-  let offset = 0;
-
-  let remoteElementIdx = -1;
-  for (const remoteElement of remoteElements) {
-    remoteElementIdx++;
-
-    const local = localElementsData.get(remoteElement.id);
-
-    if (shouldDiscardRemoteElement(localAppState, local?.[0], remoteElement)) {
-      if (remoteElement[PRECEDING_ELEMENT_KEY]) {
-        delete remoteElement[PRECEDING_ELEMENT_KEY];
-      }
-
-      continue;
-    }
-
-    // Mark duplicate for removal as it'll be replaced with the remote element
-    if (local) {
-      // Unless the remote and local elements are the same element in which case
-      // we need to keep it as we'd otherwise discard it from the resulting
-      // array.
-      if (local[0] === remoteElement) {
-        continue;
-      }
-      duplicates.set(local[0], true);
-    }
-
-    // parent may not be defined in case the remote client is running an older
-    // excalidraw version
-    const parent =
-      remoteElement[PRECEDING_ELEMENT_KEY] ||
-      remoteElements[remoteElementIdx - 1]?.id ||
-      null;
-
-    if (parent != null) {
-      delete remoteElement[PRECEDING_ELEMENT_KEY];
-
-      // ^ indicates the element is the first in elements array
-      if (parent === "^") {
-        offset++;
-        if (cursor === 0) {
-          reconciledElements.unshift(remoteElement);
-          localElementsData.set(remoteElement.id, [
-            remoteElement,
-            cursor - offset,
-          ]);
-        } else {
-          reconciledElements.splice(cursor + 1, 0, remoteElement);
-          localElementsData.set(remoteElement.id, [
-            remoteElement,
-            cursor + 1 - offset,
-          ]);
-          cursor++;
-        }
-      } else {
-        let idx = localElementsData.has(parent)
-          ? localElementsData.get(parent)![1]
-          : null;
-        if (idx != null) {
-          idx += offset;
-        }
-        if (idx != null && idx >= cursor) {
-          reconciledElements.splice(idx + 1, 0, remoteElement);
-          offset++;
-          localElementsData.set(remoteElement.id, [
-            remoteElement,
-            idx + 1 - offset,
-          ]);
-          cursor = idx + 1;
-        } else if (idx != null) {
-          reconciledElements.splice(cursor + 1, 0, remoteElement);
-          offset++;
-          localElementsData.set(remoteElement.id, [
-            remoteElement,
-            cursor + 1 - offset,
-          ]);
-          cursor++;
-        } else {
-          reconciledElements.push(remoteElement);
-          localElementsData.set(remoteElement.id, [
-            remoteElement,
-            reconciledElements.length - 1 - offset,
-          ]);
-        }
-      }
-      // no parent z-index information, local element exists → replace in place
-    } else if (local) {
-      reconciledElements[local[1]] = remoteElement;
-      localElementsData.set(remoteElement.id, [remoteElement, local[1]]);
-      // otherwise push to the end
-    } else {
-      reconciledElements.push(remoteElement);
-      localElementsData.set(remoteElement.id, [
-        remoteElement,
-        reconciledElements.length - 1 - offset,
-      ]);
-    }
-  }
-
-  const ret: readonly ExcalidrawElement[] = reconciledElements.filter(
-    (element) => !duplicates.has(element),
-  );
-
-  return ret as ReconciledElements;
-};