From c610df97b67af9c2d59fc5db540933ec1b2b7b5c Mon Sep 17 00:00:00 2001
From: endiliey <endiliey@gmail.com>
Date: Thu, 28 Nov 2019 00:00:33 +0700
Subject: [PATCH] perf(v2): add link rel preconnect for google analytics &
 google tags plugin

---
 .../src/index.js                              | 14 +++++++++++++
 .../src/index.js                              | 21 +++++++++++++++++++
 2 files changed, 35 insertions(+)

diff --git a/packages/docusaurus-plugin-google-analytics/src/index.js b/packages/docusaurus-plugin-google-analytics/src/index.js
index 6a5cdaa2c1e8..ecc91601b43f 100644
--- a/packages/docusaurus-plugin-google-analytics/src/index.js
+++ b/packages/docusaurus-plugin-google-analytics/src/index.js
@@ -14,5 +14,19 @@ module.exports = function() {
     getClientModules() {
       return [path.resolve(__dirname, './analytics')];
     },
+
+    injectHtmlTags() {
+      return {
+        headTags: [
+          {
+            tagName: 'link',
+            attributes: {
+              rel: 'preconnect',
+              href: 'https://www.google-analytics.com',
+            },
+          },
+        ],
+      };
+    },
   };
 };
diff --git a/packages/docusaurus-plugin-google-gtag/src/index.js b/packages/docusaurus-plugin-google-gtag/src/index.js
index b6a79fee9709..482487c14bf9 100644
--- a/packages/docusaurus-plugin-google-gtag/src/index.js
+++ b/packages/docusaurus-plugin-google-gtag/src/index.js
@@ -14,5 +14,26 @@ module.exports = function() {
     getClientModules() {
       return [path.resolve(__dirname, './gtag')];
     },
+
+    injectHtmlTags() {
+      return {
+        headTags: [
+          {
+            tagName: 'link',
+            attributes: {
+              rel: 'preconnect',
+              href: 'https://www.google-analytics.com',
+            },
+          },
+          {
+            tagName: 'link',
+            attributes: {
+              rel: 'preconnect',
+              href: 'https://www.googletagmanager.com',
+            },
+          },
+        ],
+      };
+    },
   };
 };