[fix] Formatting synchronization has been changed.

Author: Ulyanov-programmer

cssToHtml.js

@@ -1,10 +1,11 @@
 import fs from 'fs-extra'
 import path from 'path'
-import prettier from "@prettier/sync"
+import { createSyncFn } from 'synckit'
 import { parse } from '@adobe/css-tools'
 import { createParser } from 'css-selector-parser'
 import { ElementOfHtml } from './elementOfHtml.js'
 
+const syncFormatting = createSyncFn(path.resolve('./formatWorker.js'))
 
 export class CssToHtml {
   static ENCODING = 'utf8'
@@ -113,7 +114,7 @@ export class CssToHtml {
     }
 
     if (this.format) {
-      return prettier.format(newContent, { parser: "html" })
+      return syncFormatting(newContent)
     } else {
       return newContent
     }

formatWorker.js

@@ -0,0 +1,6 @@
+import { runAsWorker } from 'synckit'
+import * as prettier from "prettier"
+
+runAsWorker(async (newContent) => {
+  return prettier.format(newContent, { parser: "html" })
+})

package.json

@@ -26,10 +26,10 @@
   ],
   "dependencies": {
     "@adobe/css-tools": "^4.4.0",
-    "@prettier/sync": "^0.5.2",
     "css-selector-parser": "^3.0.5",
     "fs-extra": "^11.2.0",
-    "prettier": "^3.3.3"
+    "prettier": "^3.3.3",
+    "synckit": "^0.9.2"
   },
   "license": "ISC"
 }