feat: support preload script hot reload

src/preload/index.ts

@@ -1,5 +1,21 @@
-import './communication'
-import { domReady } from './utils/dom'
-import { loading } from './loading'
+import fs from 'fs'
+import { contextBridge, ipcRenderer } from 'electron'
+import { domReady, injectWsCode } from './utils'
+import { useLoading } from './loading'
 
-domReady().then(loading)
+const isDev = process.env.NODE_ENV === 'development'
+const { removeLoading, appendLoading } = useLoading()
+
+domReady().then(() => {
+  appendLoading()
+  isDev && injectWsCode({
+    host: '127.0.0.1',
+    port: process.env.PORT_WS as string, // process.env.npm_package_env_PORT_WS
+  })
+})
+
+
+// --------- Expose some API to Renderer process. ---------
+contextBridge.exposeInMainWorld('fs', fs)
+contextBridge.exposeInMainWorld('ipcRenderer', ipcRenderer)
+contextBridge.exposeInMainWorld('removeLoading', removeLoading)