feat: preview hot reload

electron/components/ipc.js

 const path = require('path');
 const store = require('./store');
 const { ipcMain } = require('electron');
-const { runPreview } = require('./preview');
+const { runPreview, updatePreview } = require('./preview');
 const { getRecentFiles, pickEpocProject, openEpocProject, newEpocProject, saveEpocProject, exportProject, writeProjectData, writeEpocData, readProjectData, copyFileToWorkdir } = require('./file');
 const { Menu } = require('electron');
 const contextMenu = require('./contextMenu');
@@ -100,6 +100,7 @@ const setupIpcListener = function (targetWindow) {
         if(event.sender !== targetWindow.webContents) return;
 
         await writeEpocData(store.state.projects[targetWindow.id].workdir, data);
+        updatePreview();
     });
 
     ipcMain.on('importFile', async (event, data) => {

electron/components/preview.js

@@ -82,6 +82,12 @@ function createPreviewServer () {
     });
 }
 
+function updatePreview() {
+    if (!previewWindow) return;
+
+    previewWindow.reload();
+}
+
 async function createPreviewWindow(server, contentPath) {
     if (!previewWindow) {
         previewWindow = new BrowserWindow({
@@ -124,5 +130,6 @@ const cleanPreview = function () {
 
 module.exports = {
     runPreview,
-    cleanPreview
+    cleanPreview,
+    updatePreview
 };
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