diff --git a/packages/playwright/src/common/config.ts b/packages/playwright/src/common/config.ts
index cf126efa29..affa72f772 100644
--- a/packages/playwright/src/common/config.ts
+++ b/packages/playwright/src/common/config.ts
@@ -73,8 +73,8 @@ export class FullConfigInternal {
     const privateConfiguration = (userConfig as any)['@playwright/test'];
     this.plugins = (privateConfiguration?.plugins || []).map((p: any) => ({ factory: p }));
 
-    this.globalSetups = (Array.isArray(userConfig.globalSetup) ? userConfig.globalSetup : [userConfig.globalSetup]).map(s => resolveScript(s, configDir)).filter((script): script is string => !!script);
-    this.globalTeardowns = (Array.isArray(userConfig.globalTeardown) ? userConfig.globalTeardown : [userConfig.globalTeardown]).map(s => resolveScript(s, configDir)).filter((script): script is string => !!script);
+    this.globalSetups = (Array.isArray(userConfig.globalSetup) ? userConfig.globalSetup : [userConfig.globalSetup]).map(s => resolveScript(s, configDir)).filter(script => script !== undefined);
+    this.globalTeardowns = (Array.isArray(userConfig.globalTeardown) ? userConfig.globalTeardown : [userConfig.globalTeardown]).map(s => resolveScript(s, configDir)).filter(script => script !== undefined);
 
     this.config = {
       configFile: resolvedConfigFile,