From bcad85653d77dbe2c352e6839f24f1882e1842df Mon Sep 17 00:00:00 2001
From: Michael Shilman <michael@lab80.co>
Date: Sat, 10 Apr 2021 21:29:23 +0800
Subject: [PATCH] Core: Enable community builders

---
 lib/core-server/src/utils/get-preview-builder.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/core-server/src/utils/get-preview-builder.ts b/lib/core-server/src/utils/get-preview-builder.ts
index 55eacbbf83f6..111a5694741c 100644
--- a/lib/core-server/src/utils/get-preview-builder.ts
+++ b/lib/core-server/src/utils/get-preview-builder.ts
@@ -8,7 +8,10 @@ export async function getPreviewBuilder(configDir: Options['configDir']) {
   const mainFile = getInterpretedFile(main);
   const { core } = mainFile ? serverRequire(mainFile) : { core: null };
   const builder = core?.builder || DEFAULT_WEBPACK;
+  const builderPackage = ['webpack4', 'webpack5'].includes(builder)
+    ? `@storybook/builder-${builder}`
+    : builder;
 
-  const previewBuilder = await import(`@storybook/builder-${builder}`);
+  const previewBuilder = await import(builderPackage);
   return previewBuilder;
 }