add history.shouldCreateEntry resolver (#1622)

src/actions/actionHistory.tsx

@@ -3,7 +3,7 @@ import React from "react";
 import { undo, redo } from "../components/icons";
 import { ToolButton } from "../components/ToolButton";
 import { t } from "../i18n";
-import { SceneHistory } from "../history";
+import { SceneHistory, HistoryEntry } from "../history";
 import { ExcalidrawElement } from "../element/types";
 import { AppState } from "../types";
 import { KEYS } from "../keys";
@@ -13,10 +13,7 @@ import { newElementWith } from "../element/mutateElement";
 const writeData = (
   prevElements: readonly ExcalidrawElement[],
   appState: AppState,
-  updater: () => {
-    elements: ExcalidrawElement[];
-    appState: AppState;
-  } | null,
+  updater: () => HistoryEntry | null,
 ): ActionResult => {
   const commitToHistory = false;
   if (
@@ -52,6 +49,7 @@ const writeData = (
         ),
       appState: { ...appState, ...data.appState },
       commitToHistory,
+      syncHistory: true,
     };
   }
   return { commitToHistory };

src/actions/types.ts

@@ -6,6 +6,7 @@ export type ActionResult = {
   elements?: readonly ExcalidrawElement[] | null;
   appState?: AppState | null;
   commitToHistory: boolean;
+  syncHistory?: boolean;
 };
 
 type ActionFn = (