update

src/main/index.ts

@@ -1,5 +1,5 @@
 import { join, sep } from 'node:path'
-import { app, shell, BrowserWindow, ipcMain } from 'electron'
+import { app, dialog, shell, BrowserWindow, ipcMain } from 'electron'
 import { watch, type FSWatcher } from 'chokidar'
 import { getName, getRoot, openDialog } from './project'
 import { readAll, readProjectFile, readTree, writeProjectFile } from './fs-service'
@@ -84,6 +84,20 @@ function registerIpc(): void {
 
   ipcMain.handle('search:content', (_e, query: string) => searchContent(getRoot(), query))
   ipcMain.handle('search:files', () => listFiles(getRoot()))
+
+  ipcMain.handle('dialog:unsavedClose', async (e, path: string) => {
+    const win = BrowserWindow.fromWebContents(e.sender)
+    const opts: Electron.MessageBoxOptions = {
+      type: 'warning',
+      buttons: ['Save', "Don't Save", 'Cancel'],
+      defaultId: 0,
+      cancelId: 2,
+      message: `Save changes to ${path}?`,
+      detail: 'Your changes will be lost if you don’t save them.',
+    }
+    const { response } = win ? await dialog.showMessageBox(win, opts) : await dialog.showMessageBox(opts)
+    return response === 0 ? 'save' : response === 1 ? 'discard' : 'cancel'
+  })
 }
 
 function createWindow(): void {
@@ -97,7 +111,7 @@ function createWindow(): void {
     titleBarStyle: isMac ? 'hiddenInset' : 'default',
     trafficLightPosition: isMac ? { x: 14, y: 12 } : undefined,
     webPreferences: {
-      preload: join(__dirname, '../preload/index.js'),
+      preload: join(__dirname, '../preload/index.cjs'),
       contextIsolation: true,
       nodeIntegration: false,
       sandbox: false,