create mirror during record

src/index.ts

@@ -1,6 +1,6 @@
 import record from './record';
 import { Replayer } from './replay';
-import { mirror } from './utils';
+import { _mirror } from './utils';
 import * as utils from './utils';
 
 export {
@@ -13,4 +13,11 @@ export {
 const { addCustomEvent } = record;
 const { freezePage } = record;
 
-export { record, addCustomEvent, freezePage, Replayer, mirror, utils };
+export {
+  record,
+  addCustomEvent,
+  freezePage,
+  Replayer,
+  _mirror as mirror,
+  utils,
+};

src/record/index.ts

@@ -1,13 +1,13 @@
 import { snapshot, MaskInputOptions, SlimDOMOptions } from 'rrweb-snapshot';
 import { initObservers, mutationBuffers } from './observer';
 import {
-  mirror,
   on,
   getWindowWidth,
   getWindowHeight,
   polyfill,
   isIframeINode,
   hasShadowRoot,
+  createMirror,
 } from '../utils';
 import {
   EventType,
@@ -33,6 +33,7 @@ let wrappedEmit!: (e: eventWithTime, isCheckout?: boolean) => void;
 
 let takeFullSnapshot!: (isCheckout?: boolean) => void;
 
+const mirror = createMirror();
 function record<T = eventWithTime>(
   options: recordOptions<T> = {},
 ): listenerHandler | undefined {
@@ -215,6 +216,7 @@ function record<T = eventWithTime>(
       slimDOMOptions,
       iframeManager,
     },
+    mirror,
   });
 
   takeFullSnapshot = (isCheckout = false) => {
@@ -418,6 +420,7 @@ function record<T = eventWithTime>(
           logOptions,
           blockSelector,
           slimDOMOptions,
+          mirror,
           iframeManager,
           shadowDomManager,
         },
@@ -490,4 +493,6 @@ record.takeFullSnapshot = (isCheckout?: boolean) => {
   takeFullSnapshot(isCheckout);
 };
 
+record.mirror = mirror;
+
 export default record;

src/record/mutation.ts

@@ -18,9 +18,9 @@ import {
   removedNodeMutation,
   addedNodeMutation,
   MaskTextFn,
+  Mirror,
 } from '../types';
 import {
-  mirror,
   isBlocked,
   isAncestorRemoved,
   isIgnored,
@@ -171,6 +171,7 @@ export default class MutationBuffer {
   private slimDOMOptions: SlimDOMOptions;
   private doc: Document;
 
+  private mirror: Mirror;
   private iframeManager: IframeManager;
   private shadowDomManager: ShadowDomManager;
 
@@ -186,6 +187,7 @@ export default class MutationBuffer {
     recordCanvas: boolean,
     slimDOMOptions: SlimDOMOptions,
     doc: Document,
+    mirror: Mirror,
     iframeManager: IframeManager,
     shadowDomManager: ShadowDomManager,
   ) {
@@ -200,6 +202,7 @@ export default class MutationBuffer {
     this.slimDOMOptions = slimDOMOptions;
     this.emissionCallback = cb;
     this.doc = doc;
+    this.mirror = mirror;
     this.iframeManager = iframeManager;
     this.shadowDomManager = shadowDomManager;
   }
@@ -251,7 +254,7 @@ export default class MutationBuffer {
       let nextId: number | null = IGNORED_NODE; // slimDOM: ignored
       while (nextId === IGNORED_NODE) {
         ns = ns && ns.nextSibling;
-        nextId = ns && mirror.getId((ns as unknown) as INode);
+        nextId = ns && this.mirror.getId((ns as unknown) as INode);
       }
       if (nextId === -1 && isBlocked(n.nextSibling, this.blockClass)) {
         nextId = null;
@@ -267,15 +270,15 @@ export default class MutationBuffer {
         return;
       }
       const parentId = isShadowRoot(n.parentNode)
-        ? mirror.getId((shadowHost as unknown) as INode)
+        ? this.mirror.getId((shadowHost as unknown) as INode)
-        : mirror.getId((n.parentNode as Node) as INode);
+        : this.mirror.getId((n.parentNode as Node) as INode);
       const nextId = getNextId(n);
       if (parentId === -1 || nextId === -1) {
         return addList.addNode(n);
       }
       let sn = serializeNodeWithId(n, {
         doc: this.doc,
-        map: mirror.map,
+        map: this.mirror.map,
         blockClass: this.blockClass,
         blockSelector: this.blockSelector,
         maskTextClass: this.maskTextClass,
@@ -308,7 +311,7 @@ export default class MutationBuffer {
     };
 
     while (this.mapRemoves.length) {
-      mirror.removeNodeFromMap(this.mapRemoves.shift() as INode);
+      this.mirror.removeNodeFromMap(this.mapRemoves.shift() as INode);
     }
 
     for (const n of this.movedSet) {
@@ -338,7 +341,7 @@ export default class MutationBuffer {
     while (addList.length) {
       let node: DoubleLinkedListNode | null = null;
       if (candidate) {
-        const parentId = mirror.getId(
+        const parentId = this.mirror.getId(
           (candidate.value.parentNode as Node) as INode,
         );
         const nextId = getNextId(candidate.value);
@@ -349,7 +352,7 @@ export default class MutationBuffer {
       if (!node) {
         for (let index = addList.length - 1; index >= 0; index--) {
           const _node = addList.get(index)!;
-          const parentId = mirror.getId(
+          const parentId = this.mirror.getId(
             (_node.value.parentNode as Node) as INode,
           );
           const nextId = getNextId(_node.value);
@@ -378,18 +381,18 @@ export default class MutationBuffer {
     const payload = {
       texts: this.texts
         .map((text) => ({
-          id: mirror.getId(text.node as INode),
+          id: this.mirror.getId(text.node as INode),
           value: text.value,
         }))
         // text mutation's id was not in the mirror map means the target node has been removed
-        .filter((text) => mirror.has(text.id)),
+        .filter((text) => this.mirror.has(text.id)),
       attributes: this.attributes
         .map((attribute) => ({
-          id: mirror.getId(attribute.node as INode),
+          id: this.mirror.getId(attribute.node as INode),
           attributes: attribute.attributes,
         }))
         // attribute mutation's id was not in the mirror map means the target node has been removed
-        .filter((attribute) => mirror.has(attribute.id)),
+        .filter((attribute) => this.mirror.has(attribute.id)),
       removes: this.removes,
       adds,
     };
@@ -466,10 +469,10 @@ export default class MutationBuffer {
       case 'childList': {
         m.addedNodes.forEach((n) => this.genAdds(n, m.target));
         m.removedNodes.forEach((n) => {
-          const nodeId = mirror.getId(n as INode);
+          const nodeId = this.mirror.getId(n as INode);
           const parentId = isShadowRoot(m.target)
-            ? mirror.getId((m.target.host as unknown) as INode)
+            ? this.mirror.getId((m.target.host as unknown) as INode)
-            : mirror.getId(m.target as INode);
+            : this.mirror.getId(m.target as INode);
           if (
             isBlocked(n, this.blockClass) ||
             isBlocked(m.target, this.blockClass) ||
@@ -489,7 +492,7 @@ export default class MutationBuffer {
              * newly added node will be serialized without child nodes.
              * TODO: verify this
              */
-          } else if (isAncestorRemoved(m.target as INode)) {
+          } else if (isAncestorRemoved(m.target as INode, this.mirror)) {
             /**
              * If parent id was not in the mirror map any more, it
              * means the parent node has already been removed. So
@@ -560,7 +563,7 @@ function isParentRemoved(removes: removedNodeMutation[], n: Node): boolean {
   if (!parentNode) {
     return false;
   }
-  const parentId = mirror.getId((parentNode as Node) as INode);
+  const parentId = this.mirror.getId((parentNode as Node) as INode);
   if (removes.some((r) => r.id === parentId)) {
     return true;
   }

src/record/observer.ts

@@ -1,7 +1,6 @@
 import { INode, MaskInputOptions, SlimDOMOptions } from 'rrweb-snapshot';
 import { FontFaceDescriptors, FontFaceSet } from 'css-font-loading-module';
 import {
-  mirror,
   throttle,
   on,
   hookSetter,
@@ -42,6 +41,7 @@ import {
   LogRecordOptions,
   Logger,
   LogLevel,
+  Mirror,
 } from '../types';
 import MutationBuffer from './mutation';
 import { stringify } from './stringify';
@@ -72,6 +72,7 @@ export function initMutationObserver(
   maskTextFn: MaskTextFn | undefined,
   recordCanvas: boolean,
   slimDOMOptions: SlimDOMOptions,
+  mirror: Mirror,
   iframeManager: IframeManager,
   shadowDomManager: ShadowDomManager,
   rootEl: Node,
@@ -91,6 +92,7 @@ export function initMutationObserver(
     recordCanvas,
     slimDOMOptions,
     doc,
+    mirror,
     iframeManager,
     shadowDomManager,
   );
@@ -137,6 +139,7 @@ function initMoveObserver(
   cb: mousemoveCallBack,
   sampling: SamplingStrategy,
   doc: Document,
+  mirror: Mirror,
 ): listenerHandler {
   if (sampling.mousemove === false) {
     return () => {};
@@ -212,6 +215,7 @@ function initMoveObserver(
 function initMouseInteractionObserver(
   cb: mouseInteractionCallBack,
   doc: Document,
+  mirror: Mirror,
   blockClass: blockClass,
   sampling: SamplingStrategy,
 ): listenerHandler {
@@ -264,6 +268,7 @@ function initMouseInteractionObserver(
 function initScrollObserver(
   cb: scrollCallback,
   doc: Document,
+  mirror: Mirror,
   blockClass: blockClass,
   sampling: SamplingStrategy,
 ): listenerHandler {
@@ -315,6 +320,7 @@ const lastInputValueMap: WeakMap<EventTarget, inputValue> = new WeakMap();
 function initInputObserver(
   cb: inputCallback,
   doc: Document,
+  mirror: Mirror,
   blockClass: blockClass,
   ignoreClass: string,
   maskInputOptions: MaskInputOptions,
@@ -419,7 +425,10 @@ function initInputObserver(
   };
 }
 
-function initStyleSheetObserver(cb: styleSheetRuleCallback): listenerHandler {
+function initStyleSheetObserver(
+  cb: styleSheetRuleCallback,
+  mirror: Mirror,
+): listenerHandler {
   const insertRule = CSSStyleSheet.prototype.insertRule;
   CSSStyleSheet.prototype.insertRule = function (rule: string, index?: number) {
     const id = mirror.getId(this.ownerNode as INode);
@@ -453,6 +462,7 @@ function initStyleSheetObserver(cb: styleSheetRuleCallback): listenerHandler {
 function initMediaInteractionObserver(
   mediaInteractionCb: mediaInteractionCallback,
   blockClass: blockClass,
+  mirror: Mirror,
 ): listenerHandler {
   const handler = (type: 'play' | 'pause') => (event: Event) => {
     const { target } = event;
@@ -473,6 +483,7 @@ function initMediaInteractionObserver(
 function initCanvasMutationObserver(
   cb: canvasMutationCallback,
   blockClass: blockClass,
+  mirror: Mirror,
 ): listenerHandler {
   const props = Object.getOwnPropertyNames(CanvasRenderingContext2D.prototype);
   const handlers: listenerHandler[] = [];
@@ -779,20 +790,28 @@ export function initObservers(
     o.maskTextFn,
     o.recordCanvas,
     o.slimDOMOptions,
+    o.mirror,
     o.iframeManager,
     o.shadowDomManager,
     o.doc,
   );
-  const mousemoveHandler = initMoveObserver(o.mousemoveCb, o.sampling, o.doc);
+  const mousemoveHandler = initMoveObserver(
+    o.mousemoveCb,
+    o.sampling,
+    o.doc,
+    o.mirror,
+  );
   const mouseInteractionHandler = initMouseInteractionObserver(
     o.mouseInteractionCb,
     o.doc,
+    o.mirror,
     o.blockClass,
     o.sampling,
   );
   const scrollHandler = initScrollObserver(
     o.scrollCb,
     o.doc,
+    o.mirror,
     o.blockClass,
     o.sampling,
   );
@@ -800,6 +819,7 @@ export function initObservers(
   const inputHandler = initInputObserver(
     o.inputCb,
     o.doc,
+    o.mirror,
     o.blockClass,
     o.ignoreClass,
     o.maskInputOptions,
@@ -809,10 +829,14 @@ export function initObservers(
   const mediaInteractionHandler = initMediaInteractionObserver(
     o.mediaInteractionCb,
     o.blockClass,
+    o.mirror,
+  );
+  const styleSheetObserver = initStyleSheetObserver(
+    o.styleSheetRuleCb,
+    o.mirror,
   );
-  const styleSheetObserver = initStyleSheetObserver(o.styleSheetRuleCb);
   const canvasMutationObserver = o.recordCanvas
-    ? initCanvasMutationObserver(o.canvasMutationCb, o.blockClass)
+    ? initCanvasMutationObserver(o.canvasMutationCb, o.blockClass, o.mirror)
     : () => {};
   const fontObserver = o.collectFonts ? initFontObserver(o.fontCb) : () => {};
   const logObserver = o.logOptions

src/record/shadow-dom-manager.ts

@@ -1,4 +1,10 @@
-import { mutationCallBack, blockClass, maskTextClass, MaskTextFn } from '../types';
+import {
+  mutationCallBack,
+  blockClass,
+  maskTextClass,
+  MaskTextFn,
+  Mirror,
+} from '../types';
 import { MaskInputOptions, SlimDOMOptions } from 'rrweb-snapshot';
 import { IframeManager } from './iframe-manager';
 import { initMutationObserver } from './observer';
@@ -19,13 +25,16 @@ type BypassOptions = {
 export class ShadowDomManager {
   private mutationCb: mutationCallBack;
   private bypassOptions: BypassOptions;
+  private mirror: Mirror;
 
   constructor(options: {
     mutationCb: mutationCallBack;
     bypassOptions: BypassOptions;
+    mirror: Mirror;
   }) {
     this.mutationCb = options.mutationCb;
     this.bypassOptions = options.bypassOptions;
+    this.mirror = this.mirror;
   }
 
   public addShadowRoot(shadowRoot: ShadowRoot, doc: Document) {
@@ -41,6 +50,7 @@ export class ShadowDomManager {
       this.bypassOptions.maskTextFn,
       this.bypassOptions.recordCanvas,
       this.bypassOptions.slimDOMOptions,
+      this.mirror,
       this.bypassOptions.iframeManager,
       this,
       shadowRoot,

src/replay/index.ts

@@ -779,7 +779,7 @@ export class Replayer {
           d.adds.forEach((m) => this.treeIndex.add(m));
           d.texts.forEach((m) => this.treeIndex.text(m));
           d.attributes.forEach((m) => this.treeIndex.attribute(m));
-          d.removes.forEach((m) => this.treeIndex.remove(m));
+          d.removes.forEach((m) => this.treeIndex.remove(m, this.mirror));
         }
         this.applyMutation(d, isSync);
         break;

src/types.ts

@@ -243,6 +243,7 @@ export type observerParam = {
   collectFonts: boolean;
   slimDOMOptions: SlimDOMOptions;
   doc: Document;
+  mirror: Mirror;
   iframeManager: IframeManager;
   shadowDomManager: ShadowDomManager;
 };

src/utils.ts

@@ -68,8 +68,12 @@ export function createMirror(): Mirror {
 
 // https://github.com/rrweb-io/rrweb/pull/407
 const DEPARTED_MIRROR_ACCESS_WARNING =
-  'Please stop import mirror directly. Instead of that, now you can use replayer.getMirror() to access the mirror instance of a replayer.';
+  'Please stop import mirror directly. Instead of that,' +
-export let mirror: Mirror = {
+  '\r\n' +
+  'now you can use replayer.getMirror() to access the mirror instance of a replayer,' +
+  '\r\n' +
+  'or you can use record.mirror to access the mirror instance during recording.';
+export let _mirror: Mirror = {
   map: {},
   getId() {
     console.error(DEPARTED_MIRROR_ACCESS_WARNING);
@@ -90,8 +94,8 @@ export let mirror: Mirror = {
     console.error(DEPARTED_MIRROR_ACCESS_WARNING);
   },
 };
-if (window.Proxy && window.Reflect) {
+if (typeof window !== 'undefined' && window.Proxy && window.Reflect) {
-  mirror = new Proxy(mirror, {
+  _mirror = new Proxy(_mirror, {
     get(target, prop, receiver) {
       if (prop === 'map') {
         console.error(DEPARTED_MIRROR_ACCESS_WARNING);
@@ -253,7 +257,7 @@ export function isIgnored(n: Node | INode): boolean {
   return false;
 }
 
-export function isAncestorRemoved(target: INode): boolean {
+export function isAncestorRemoved(target: INode, mirror: Mirror): boolean {
   if (isShadowRoot(target)) {
     return false;
   }
@@ -271,7 +275,7 @@ export function isAncestorRemoved(target: INode): boolean {
   if (!target.parentNode) {
     return true;
   }
-  return isAncestorRemoved((target.parentNode as unknown) as INode);
+  return isAncestorRemoved((target.parentNode as unknown) as INode, mirror);
 }
 
 export function isTouchEvent(
@@ -382,7 +386,7 @@ export class TreeIndex {
     this.indexes.set(treeNode.id, treeNode);
   }
 
-  public remove(mutation: removedNodeMutation) {
+  public remove(mutation: removedNodeMutation, mirror: Mirror) {
     const parentTreeNode = this.indexes.get(mutation.parentId);
     const treeNode = this.indexes.get(mutation.id);
 

test/record.test.ts

@@ -142,10 +142,10 @@ describe('record', function (this: ISuite) {
     }
     await this.page.waitFor(300);
     expect(this.events.length).to.equal(33); // before first automatic snapshot
-    await this.page.waitFor(200);  // could be 33 or 35 events by now depending on speed of test env
+    await this.page.waitFor(200); // could be 33 or 35 events by now depending on speed of test env
     await this.page.type('input', 'a');
     await this.page.waitFor(10);
-    expect(this.events.length).to.equal(36);  // additionally includes the 2 checkout events
+    expect(this.events.length).to.equal(36); // additionally includes the 2 checkout events
     expect(
       this.events.filter(
         (event: eventWithTime) => event.type === EventType.Meta,

typings/index.d.ts

@@ -1,8 +1,8 @@
 import record from './record';
 import { Replayer } from './replay';
-import { mirror } from './utils';
+import { _mirror } from './utils';
 import * as utils from './utils';
 export { EventType, IncrementalSource, MouseInteractions, ReplayerEvents, } from './types';
 declare const addCustomEvent: <T>(tag: string, payload: T) => void;
 declare const freezePage: () => void;
-export { record, addCustomEvent, freezePage, Replayer, mirror, utils };
+export { record, addCustomEvent, freezePage, Replayer, _mirror as mirror, utils, };

typings/record/index.d.ts

@@ -4,5 +4,6 @@ declare namespace record {
     var addCustomEvent: <T>(tag: string, payload: T) => void;
     var freezePage: () => void;
     var takeFullSnapshot: (isCheckout?: boolean | undefined) => void;
+    var mirror: import("../types").Mirror;
 }
 export default record;

typings/record/mutation.d.ts

@@ -1,5 +1,5 @@
 import { MaskInputOptions, SlimDOMOptions } from 'rrweb-snapshot';
-import { mutationRecord, blockClass, maskTextClass, mutationCallBack, MaskTextFn } from '../types';
+import { mutationRecord, blockClass, maskTextClass, mutationCallBack, MaskTextFn, Mirror } from '../types';
 import { IframeManager } from './iframe-manager';
 import { ShadowDomManager } from './shadow-dom-manager';
 export default class MutationBuffer {
@@ -24,9 +24,10 @@ export default class MutationBuffer {
     private recordCanvas;
     private slimDOMOptions;
     private doc;
+    private mirror;
     private iframeManager;
     private shadowDomManager;
-    init(cb: mutationCallBack, blockClass: blockClass, blockSelector: string | null, maskTextClass: maskTextClass, maskTextSelector: string | null, inlineStylesheet: boolean, maskInputOptions: MaskInputOptions, maskTextFn: MaskTextFn | undefined, recordCanvas: boolean, slimDOMOptions: SlimDOMOptions, doc: Document, iframeManager: IframeManager, shadowDomManager: ShadowDomManager): void;
+    init(cb: mutationCallBack, blockClass: blockClass, blockSelector: string | null, maskTextClass: maskTextClass, maskTextSelector: string | null, inlineStylesheet: boolean, maskInputOptions: MaskInputOptions, maskTextFn: MaskTextFn | undefined, recordCanvas: boolean, slimDOMOptions: SlimDOMOptions, doc: Document, mirror: Mirror, iframeManager: IframeManager, shadowDomManager: ShadowDomManager): void;
     freeze(): void;
     unfreeze(): void;
     isFrozen(): boolean;

typings/record/observer.d.ts

@@ -1,9 +1,9 @@
 import { MaskInputOptions, SlimDOMOptions } from 'rrweb-snapshot';
-import { mutationCallBack, observerParam, listenerHandler, blockClass, maskTextClass, hooksParam, MaskTextFn } from '../types';
+import { mutationCallBack, observerParam, listenerHandler, blockClass, maskTextClass, hooksParam, MaskTextFn, Mirror } from '../types';
 import MutationBuffer from './mutation';
 import { IframeManager } from './iframe-manager';
 import { ShadowDomManager } from './shadow-dom-manager';
 export declare const mutationBuffers: MutationBuffer[];
-export declare function initMutationObserver(cb: mutationCallBack, doc: Document, blockClass: blockClass, blockSelector: string | null, maskTextClass: maskTextClass, maskTextSelector: string | null, inlineStylesheet: boolean, maskInputOptions: MaskInputOptions, maskTextFn: MaskTextFn | undefined, recordCanvas: boolean, slimDOMOptions: SlimDOMOptions, iframeManager: IframeManager, shadowDomManager: ShadowDomManager, rootEl: Node): MutationObserver;
+export declare function initMutationObserver(cb: mutationCallBack, doc: Document, blockClass: blockClass, blockSelector: string | null, maskTextClass: maskTextClass, maskTextSelector: string | null, inlineStylesheet: boolean, maskInputOptions: MaskInputOptions, maskTextFn: MaskTextFn | undefined, recordCanvas: boolean, slimDOMOptions: SlimDOMOptions, mirror: Mirror, iframeManager: IframeManager, shadowDomManager: ShadowDomManager, rootEl: Node): MutationObserver;
 export declare const INPUT_TAGS: string[];
 export declare function initObservers(o: observerParam, hooks?: hooksParam): listenerHandler;

typings/record/shadow-dom-manager.d.ts

@@ -1,4 +1,4 @@
-import { mutationCallBack, blockClass, maskTextClass, MaskTextFn } from '../types';
+import { mutationCallBack, blockClass, maskTextClass, MaskTextFn, Mirror } from '../types';
 import { MaskInputOptions, SlimDOMOptions } from 'rrweb-snapshot';
 import { IframeManager } from './iframe-manager';
 declare type BypassOptions = {
@@ -16,9 +16,11 @@ declare type BypassOptions = {
 export declare class ShadowDomManager {
     private mutationCb;
     private bypassOptions;
+    private mirror;
     constructor(options: {
         mutationCb: mutationCallBack;
         bypassOptions: BypassOptions;
+        mirror: Mirror;
     });
     addShadowRoot(shadowRoot: ShadowRoot, doc: Document): void;
 }

typings/types.d.ts

@@ -168,6 +168,7 @@ export declare type observerParam = {
     collectFonts: boolean;
     slimDOMOptions: SlimDOMOptions;
     doc: Document;
+    mirror: Mirror;
     iframeManager: IframeManager;
     shadowDomManager: ShadowDomManager;
 };

typings/utils.d.ts

@@ -2,7 +2,7 @@ import { Mirror, throttleOptions, listenerHandler, hookResetter, blockClass, eve
 import { INode, serializedNodeWithId } from 'rrweb-snapshot';
 export declare function on(type: string, fn: EventListenerOrEventListenerObject, target?: Document | Window): listenerHandler;
 export declare function createMirror(): Mirror;
-export declare let mirror: Mirror;
+export declare let _mirror: Mirror;
 export declare function throttle<T>(func: (arg: T) => void, wait: number, options?: throttleOptions): (arg: T) => void;
 export declare function hookSetter<T>(target: T, key: string | number | symbol, d: PropertyDescriptor, isRevoked?: boolean, win?: Window & typeof globalThis): hookResetter;
 export declare function patch(source: {
@@ -12,7 +12,7 @@ export declare function getWindowHeight(): number;
 export declare function getWindowWidth(): number;
 export declare function isBlocked(node: Node | null, blockClass: blockClass): boolean;
 export declare function isIgnored(n: Node | INode): boolean;
-export declare function isAncestorRemoved(target: INode): boolean;
+export declare function isAncestorRemoved(target: INode, mirror: Mirror): boolean;
 export declare function isTouchEvent(event: MouseEvent | TouchEvent): event is TouchEvent;
 export declare function polyfill(win?: Window & typeof globalThis): void;
 export declare function needCastInSyncMode(event: eventWithTime): boolean;
@@ -35,7 +35,7 @@ export declare class TreeIndex {
     private inputMap;
     constructor();
     add(mutation: addedNodeMutation): void;
-    remove(mutation: removedNodeMutation): void;
+    remove(mutation: removedNodeMutation, mirror: Mirror): void;
     text(mutation: textMutation): void;
     attribute(mutation: attributeMutation): void;
     scroll(d: scrollData): void;