feat: update formatting for mpx json

Author: wangshunnn

packages/language-core/src/plugins/mpx-sfc-json.ts

@@ -21,7 +21,11 @@ const plugin: MpxLanguagePlugin = () => {
     resolveEmbeddedCode(_fileName, sfc, embeddedFile) {
       const json = /json_(js|json)/.test(embeddedFile.id) ? sfc.json : undefined
       if (json) {
-        embeddedFile.content.push([json.content, json.name, 0, allCodeFeatures])
+        let content = json.content
+        if (content.startsWith('\n')) {
+          content = content.slice(1)
+        }
+        embeddedFile.content.push([content, json.name, 1, allCodeFeatures])
       }
     },
   }

packages/language-service/src/plugins/mpx-sfc-json-json.ts

@@ -7,6 +7,14 @@ export function create(): LanguageServicePlugin {
       // mpx script-json json 语法模块允许注释和尾随逗号
       return { comments: 'ignore', trailingCommas: 'ignore' }
     },
+    getFormattingOptions: async (_document, options, context) => {
+      return {
+        ...options,
+        ...(await context.env.getConfiguration?.('json.format')),
+        // 最后一行换行避免和 </script> 标签同一行
+        insertFinalNewline: true,
+      }
+    },
   })
 
   return base