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

src/packages/extensions/ts/empty/index.ts

@@ -0,0 +1,26 @@
+import { useEffect } from "react";
+import { ExcalidrawImperativeAPI } from "../../../../types";
+
+// Extension authors: provide a extension name here like "myextension"
+export const EmptyExtension = "empty";
+
+// Extension authors: provide a hook like `useMyExtension` in `myextension/index`
+export const useEmptyExtension = (api: ExcalidrawImperativeAPI | null) => {
+  const enabled = emptyExtensionLoadable;
+  useEffect(() => {
+    if (enabled) {
+    }
+  }, [enabled, api]);
+};
+
+// Extension authors: Use a variable like `myExtensionLoadable` to determine
+// whether or not to do anything in each of `useMyExtension` and `testMyExtension`.
+let emptyExtensionLoadable = false;
+
+export const getEmptyExtensionLoadable = () => {
+  return emptyExtensionLoadable;
+};
+
+export const setEmptyExtensionLoadable = (loadable: boolean) => {
+  emptyExtensionLoadable = loadable;
+};