From 0f46f38b771b2d81135432d57ec11f9c07b670eb Mon Sep 17 00:00:00 2001
From: Ashley Harrison <ashley.harrison@grafana.com>
Date: Mon, 15 Dec 2025 12:56:29 +0000
Subject: [PATCH] mock out testing libraries in prod builds

---
 scripts/webpack/empty.js        | 2 ++
 scripts/webpack/webpack.prod.js | 7 ++++++-
 2 files changed, 8 insertions(+), 1 deletion(-)
 create mode 100644 scripts/webpack/empty.js

diff --git a/scripts/webpack/empty.js b/scripts/webpack/empty.js
new file mode 100644
index 00000000000..c6c83d26ad6
--- /dev/null
+++ b/scripts/webpack/empty.js
@@ -0,0 +1,2 @@
+// Empty module used by webpack to replace test libraries in production builds
+module.exports = {};
diff --git a/scripts/webpack/webpack.prod.js b/scripts/webpack/webpack.prod.js
index 4a23f28b60d..96a9376dc04 100644
--- a/scripts/webpack/webpack.prod.js
+++ b/scripts/webpack/webpack.prod.js
@@ -6,7 +6,7 @@ const { EsbuildPlugin } = require('esbuild-loader');
 const { resolveToEsbuildTarget } = require('esbuild-plugin-browserslist');
 const MiniCssExtractPlugin = require('mini-css-extract-plugin');
 const path = require('path');
-const { EnvironmentPlugin } = require('webpack');
+const { EnvironmentPlugin, NormalModuleReplacementPlugin } = require('webpack');
 const WebpackAssetsManifest = require('webpack-assets-manifest');
 const { WebpackManifestPlugin } = require('webpack-manifest-plugin');
 const { merge } = require('webpack-merge');
@@ -75,6 +75,11 @@ module.exports = (env = {}) =>
           },
 
     plugins: [
+      // Replace any imports of test libraries with empty modules to prevent them from being bundled
+      // TODO figure out where these are being included, stop that from happening and remove this
+      new NormalModuleReplacementPlugin(/@testing-library/, (resource) => {
+        resource.request = require.resolve('./empty.js');
+      }),
       new MiniCssExtractPlugin({
         filename: 'grafana.[name].[contenthash].css',
       }),