Support vue 2.7

Co-authored-by: Aleksei Nagovitsyn <al3x.nag@gmail.com>

package.json

@@ -73,7 +73,7 @@
         "vitest": "^0.34.5"
     },
     "peerDependencies": {
-        "@vue/compiler-sfc": ">=3.0.0",
+        "@vue/compiler-sfc": "2.7.x || 3.x",
         "prettier": "2 || 3"
     },
     "peerDependenciesMeta": {

src/preprocessors/vue.ts

@@ -1,4 +1,4 @@
-import type { parse as Parse } from '@vue/compiler-sfc';
+import type { parse as Parse, SFCDescriptor } from '@vue/compiler-sfc';
 
 import { ImportOrderParserPlugin } from '../../types';
 import { PrettierOptions } from '../types';
@@ -7,8 +7,12 @@ import { preprocessor } from './preprocessor';
 
 export function vuePreprocessor(code: string, options: PrettierOptions) {
     try {
-        const { parse }: { parse: typeof Parse } = require('@vue/compiler-sfc');
-        const { descriptor } = parse(code);
+        const { parse, transformRef } = require('@vue/compiler-sfc');
+        const descriptor: SFCDescriptor = transformRef
+            ? // @vue/compiler-sfc 3.x
+              parse(code).descriptor
+            : // @vue/compiler-sfc 2.7.x
+              parse({ source: code });
 
         // 1. Filter valid blocks.
         const blocks = [descriptor.script, descriptor.scriptSetup].filter(

yarn.lock

@@ -164,7 +164,7 @@
     "@babel/parser" "^7.22.15"
     "@babel/types" "^7.22.15"
 
-"@babel/traverse@^7.21.5", "@babel/traverse@^7.23.2":
+"@babel/traverse@^7.23.2":
   version "7.23.2"
   resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.23.2.tgz#329c7a06735e144a506bdb2cad0268b7f46f4ad8"
   integrity sha512-azpe59SQ48qG6nu2CzcMLbxUudtN+dOM9kDbUqGq3HXUJRlo7i8fvPoxQUzYgLZ4cMVmuZgm8vvBpNeRhd6XSw==