fix failed to import json file in runner

.babelrc

@@ -23,5 +23,5 @@
       ]
     }
   },
-  "plugins": ["@vue/babel-plugin-jsx", "@babel/plugin-transform-runtime"]
+  "plugins": ["@vue/babel-plugin-jsx", "@babel/plugin-transform-runtime", "@babel/plugin-syntax-import-assertions"]
 }