1 files changed, 41 insertions, 0 deletions

diff --git a/subprojects/docs/src/plugins/swcMinifyPlugin.ts b/subprojects/docs/src/plugins/swcMinifyPlugin.ts
new file mode 100644
index 00000000..ecac654b
--- /dev/null
+++ b/subprojects/docs/src/plugins/swcMinifyPlugin.ts
@@ -0,0 +1,41 @@
+/*
+ * SPDX-FileCopyrightText: 2024 The Refinery Authors
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
+import type { Plugin } from '@docusaurus/types';
+import TerserPlugin from 'terser-webpack-plugin';
+
+/**
+ * A Docusarus plugin that replaces the built-in Javascript minifier with swc.
+ *
+ * See
+ * https://github.com/facebook/docusaurus/issues/4765#issuecomment-1679863984
+ * but we use swc instead of esbuild.
+ *
+ * @returns The Docusarus plugin.
+ */
+export default function swcMinifyPlugin(): Plugin {
+  return {
+    name: 'refinery-swc-minify-plugin',
+    configureWebpack: (config) => ({
+      mergeStrategy: {
+        'optimization.minimizer': 'replace',
+      },
+      optimization: {
+        minimizer:
+          config.optimization?.minimizer?.map((plugin) => {
+            // `instanceof` seems to be broken, because a different version of
+            // `TerserPlguin` is coming from Docusaurus than the one we import.
+            if (plugin?.constructor.name === TerserPlugin.name) {
+              return new TerserPlugin({
+                minify: TerserPlugin.swcMinify,
+              });
+            }
+            return plugin;
+          }) ?? [],
+      },
+    }),
+  };
+}