fix(mp-qq): add fix-2648 to app.json (#3419)

packages/uni-mp-qq/src/compiler/fix2648.ts

@@ -16,7 +16,7 @@ export function fix2648(bundle: OutputBundle) {
     const { usingComponents } = JSON.parse(appJsonAsset.source.toString()) as {
       usingComponents?: Record<string, string>
     }
-    if (usingComponents && !Object.keys(usingComponents).length) {
+    if (usingComponents && usingComponents['fix-2648']) {
       fs.outputFileSync(
         path.resolve(process.env.UNI_OUTPUT_DIR, 'fix-2648.json'),
         `{"component":true}`

packages/uni-mp-qq/src/compiler/options.ts

@@ -66,6 +66,17 @@ export const options: UniMiniProgramPluginOptions = {
   app: {
     darkmode: false,
     subpackages: true,
+    normalize(appJson) {
+      const hasUsingComponents =
+        appJson.usingComponents && Object.keys(appJson.usingComponents).length
+      if (!hasUsingComponents) {
+        // fix https://github.com/dcloudio/uni-app/issues/2648
+        appJson.usingComponents = {
+          'fix-2648': '/fix-2648',
+        }
+      }
+      return appJson
+    },
   },
   project: {
     filename: 'project.config.json',