chore(docs): add gtm tag to docs (#32048)

Docusarus gtm langchain v2

Author: eyurtsev

docs/docusaurus.config.js

@@ -65,7 +65,7 @@ const config = {
             },
             {
               test: /\.ya?ml$/,
-              use: 'yaml-loader'
+              use: "yaml-loader",
             },
             {
               test: /\.ipynb$/,
@@ -86,7 +86,8 @@ const config = {
       /** @type {import('@docusaurus/preset-classic').Options} */
       ({
         docs: {
-          editUrl: "https://github.com/langchain-ai/langchain/edit/master/docs/",
+          editUrl:
+            "https://github.com/langchain-ai/langchain/edit/master/docs/",
           sidebarPath: require.resolve("./sidebars.js"),
           remarkPlugins: [
             [require("@docusaurus/remark-plugin-npm2yarn"), { sync: true }],
@@ -120,6 +121,9 @@ const config = {
         theme: {
           customCss: require.resolve("./src/css/custom.css"),
         },
+        googleTagManager: {
+          containerId: "GTM-MH4VTX4V",
+        },
       }),
     ],
   ],
@@ -140,7 +144,7 @@ const config = {
       announcementBar: {
         content:
           '<strong>Our <a href="https://academy.langchain.com/courses/ambient-agents/?utm_medium=internal&utm_source=docs&utm_campaign=q2-2025_ambient-agents_co" target="_blank">Building Ambient Agents with LangGraph</a> course is now available on LangChain Academy!</strong>',
-          backgroundColor: '#d0c9fe'
+        backgroundColor: "#d0c9fe",
       },
       prism: {
         theme: {
@@ -160,7 +164,10 @@ const config = {
       },
       image: "img/brand/theme-image.png",
       navbar: {
-        logo: {src: "img/brand/wordmark.png", srcDark: "img/brand/wordmark-dark.png"},
+        logo: {
+          src: "img/brand/wordmark.png",
+          srcDark: "img/brand/wordmark-dark.png",
+        },
         items: [
           {
             type: "docSidebar",
@@ -193,8 +200,9 @@ const config = {
                 label: "Error reference",
               },
               {
-                type: 'html',
-                value: '<hr class="dropdown-separator" style="margin-top: 0.5rem; margin-bottom: 0.5rem">',
+                type: "html",
+                value:
+                  '<hr class="dropdown-separator" style="margin-top: 0.5rem; margin-bottom: 0.5rem">',
               },
               {
                 href: "https://docs.smith.langchain.com",
@@ -212,7 +220,7 @@ const config = {
                 href: "https://js.langchain.com",
                 label: "LangChain JS/TS",
               },
-            ]
+            ],
           },
           {
             type: "dropdown",
@@ -221,17 +229,17 @@ const config = {
             items: [
               {
                 label: "v0.3",
-                href: "/docs/introduction"
+                href: "/docs/introduction",
               },
               {
                 label: "v0.2",
-                href: "https://python.langchain.com/v0.2/docs/introduction"
+                href: "https://python.langchain.com/v0.2/docs/introduction",
               },
               {
                 label: "v0.1",
-                href: "https://python.langchain.com/v0.1/docs/get_started/introduction"
-              }
-            ]
+                href: "https://python.langchain.com/v0.1/docs/get_started/introduction",
+              },
+            ],
           },
           {
             to: "https://chat.langchain.com",
@@ -313,15 +321,6 @@ const config = {
         contextualSearch: false,
       },
     }),
-
-  scripts: [
-    baseUrl + "js/google_analytics.js",
-    {
-      src: "https://www.googletagmanager.com/gtag/js?id=G-9B66JQQH2F",
-      async: true,
-    },
-  ],
-
   customFields: {
     supabasePublicKey: process.env.NEXT_PUBLIC_SUPABASE_PUBLIC_KEY,
     supabaseUrl: process.env.NEXT_PUBLIC_SUPABASE_URL,

docs/package.json

@@ -23,6 +23,7 @@
   },
   "dependencies": {
     "@docusaurus/core": "3.5.2",
+    "@docusaurus/plugin-google-tag-manager": "^3.8.1",
     "@docusaurus/preset-classic": "3.5.2",
     "@docusaurus/remark-plugin-npm2yarn": "^3.5.2",
     "@docusaurus/theme-mermaid": "3.5.2",