Do not transcode images if they meet the size thresholds

.storybook/webpack.config.js

@@ -1,6 +1,8 @@
 // Copyright 2019-2020 Signal Messenger, LLC
 // SPDX-License-Identifier: AGPL-3.0-only
 
+const webpack = require('webpack');
+
 module.exports = ({ config }) => {
   config.entry.unshift(
     '!!style-loader!css-loader!sanitize.css',
@@ -29,5 +31,11 @@ module.exports = ({ config }) => {
     net: 'net',
   };
 
+  config.plugins.unshift(
+    new webpack.IgnorePlugin({
+      resourceRegExp: /sharp$/,
+    })
+  );
+
   return config;
 };