fix type-check issue

Author: dmytrokirpa

scripts/projects-test/src/performBrowserTest.ts

@@ -95,7 +95,7 @@ export async function performBrowserTest(publicDirectory: string) {
     }
   });
   page.on('pageerror', pageError => {
-    error = pageError;
+    error = pageError as Error;
   });
 
   await visitUrl(page, url);

scripts/test-ssr/src/utils/visitPage.ts

@@ -42,7 +42,7 @@ export async function visitPage(browser: Browser, url: string) {
   });
 
   page.on('pageerror', err => {
-    error = err;
+    error = err as Error;
   });
 
   await visitUrl(page, url);