fix: Explicitly set the prettier parser to 'babylon' (#1323)

Author: edmorley

lib/template-compiler/index.js

@@ -70,7 +70,7 @@ module.exports = function (html) {
 
     // prettify render fn
     if (!isProduction) {
-      code = prettier.format(code, { semi: false })
+      code = prettier.format(code, { semi: false, parser: 'babylon' })
     }
 
     // mark with stripped (this enables Vue to use correct runtime proxy detection)