add idRemoved to TreeIndex (#640)

src/replay/index.ts

@@ -1619,7 +1619,7 @@ export class Replayer {
   }
 
   private warnNodeNotFound(d: incrementalData, id: number) {
-    if (this.treeIndex['removeIdSet'].has(id)) {
+    if (this.treeIndex.idRemoved(id)) {
       this.warn(`Node with id '${id}' was previously removed. `, d);
     } else {
       this.warn(`Node with id '${id}' not found. `, d);
@@ -1641,7 +1641,7 @@ export class Replayer {
      * is microtask, so events fired on a removed DOM may emit
      * snapshots in the reverse order.
      */
-    if (this.treeIndex['removeIdSet'].has(id)) {
+    if (this.treeIndex.idRemoved(id)) {
       this.debug(
         REPLAY_CONSOLE_PREFIX,
         `Node with id '${id}' was previously removed. `,

src/utils.ts

@@ -534,6 +534,10 @@ export class TreeIndex {
     this.scrollMap = new Map();
     this.inputMap = new Map();
   }
+
+  public idRemoved(id: number): boolean {
+    return this.removeIdSet.has(id);
+  }
 }
 
 type ResolveTree = {