Merge pull request #17606 from yanick/patch-3

Core: Fix core.builder check
storybookjs · Mar 7, 2022 · 40d2e9c · 40d2e9c
2 parents 86730d1 + 19e49d8
commit 40d2e9c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/core-server/src/utils/get-preview-builder.ts b/lib/core-server/src/utils/get-preview-builder.ts
@@ -6,7 +6,7 @@ export async function getPreviewBuilder(configDir: Options['configDir']) {
   const mainFile = getInterpretedFile(main);
   const { core } = mainFile ? serverRequire(mainFile) : { core: null };
   let builderPackage: string;
-  if (core) {
+  if (core?.builder) {
     const builderName = typeof core.builder === 'string' ? core.builder : core.builder?.name;
     builderPackage = require.resolve(
       ['webpack4', 'webpack5'].includes(builderName)