update type

emain/emain.ts

@@ -276,7 +276,7 @@ electron.ipcMain.on("getCursorPoint", (event) => {
     const window = electron.BrowserWindow.fromWebContents(event.sender);
     const screenPoint = electron.screen.getCursorScreenPoint();
     const windowRect = window.getContentBounds();
-    const retVal: Point = {
+    const retVal: Electron.Point = {
         x: screenPoint.x - windowRect.x,
         y: screenPoint.y - windowRect.y,
     };