From 8406291fb8d641b96158d87c0b9c37297dbf328b Mon Sep 17 00:00:00 2001
From: Louie Long <cainiaokan@gmail.com>
Date: Mon, 16 Dec 2019 16:19:22 +0800
Subject: [PATCH] large json parsing optimization

There's a chance that the initial state of the page may contain very large json object. The evaluation of large json object is slow compared to calling JSON.parse function.

Pls see https://www.bram.us/2019/11/25/faster-javascript-apps-with-json-parse/
---
 lib/resource.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/resource.js b/lib/resource.js
index 0139d73..49f2f7c 100644
--- a/lib/resource.js
+++ b/lib/resource.js
@@ -141,7 +141,7 @@ class Resource {
           bodyInject.push(this.createScriptSrcTag(url));
         });
         if (this.isInjectInlineResouce() && !/window.__INITIAL_STATE__/.test(html)) {
-          bodyInject.unshift(`<script> window.__INITIAL_STATE__= ${serialize(locals.state || locals, { isJSON: true })};</script>`);
+          bodyInject.unshift(`<script> window.__INITIAL_STATE__= JSON.parse('${serialize(locals.state || locals, { isJSON: true })}');</script>`);
         }
       }
       this.injectHead(headInject);