feat: Support LaTeX and AsciiMath via MathJax on stem.excalidraw.com

src/types.ts

@@ -15,6 +15,7 @@ import {
   Theme,
   StrokeRoundness,
 } from "./element/types";
+import { Action } from "./actions/types";
 import { SHAPES } from "./shapes";
 import { Point as RoughPoint } from "roughjs/bin/geometry";
 import { LinearElementEditor } from "./element/linearElementEditor";
@@ -28,6 +29,12 @@ import { ClipboardData } from "./clipboard";
 import { isOverScrollBars } from "./scene";
 import { MaybeTransformHandleType } from "./element/transformHandles";
 import Library from "./data/library";
+import {
+  SubtypeMethods,
+  Subtype,
+  SubtypePrepFn,
+  SubtypeRecord,
+} from "./subtypes";
 import type { FileSystemHandle } from "./data/filesystem";
 import type { ALLOWED_IMAGE_MIME_TYPES, MIME_TYPES } from "./constants";
 import { ContextMenuItems } from "./components/ContextMenu";
@@ -112,6 +119,10 @@ export type AppState = {
   // (e.g. text element when typing into the input)
   editingElement: NonDeletedExcalidrawElement | null;
   editingLinearElement: LinearElementEditor | null;
+  activeSubtypes?: Subtype[];
+  customData?: {
+    [subtype: Subtype]: ExcalidrawElement["customData"];
+  };
   activeTool:
     | {
         type: typeof SHAPES[number]["value"] | "eraser";
@@ -497,6 +508,11 @@ export type ExcalidrawImperativeAPI = {
   getSceneElements: InstanceType<typeof App>["getSceneElements"];
   getAppState: () => InstanceType<typeof App>["state"];
   getFiles: () => InstanceType<typeof App>["files"];
+  actionManager: InstanceType<typeof App>["actionManager"];
+  addSubtype: (
+    record: SubtypeRecord,
+    subtypePrepFn: SubtypePrepFn,
+  ) => { actions: Action[] | null; methods: Partial<SubtypeMethods> };
   refresh: InstanceType<typeof App>["refresh"];
   setToast: InstanceType<typeof App>["setToast"];
   addFiles: (data: BinaryFileData[]) => void;