Fix crash when Promise rejects with null

jestjs · Aug 27, 2018 · 56f452a · 56f452a
1 parent c93e027
commit 56f452a
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/packages/jest-jasmine2/src/is_error.js b/packages/jest-jasmine2/src/is_error.js
@@ -13,6 +13,7 @@ export default function isError(potentialError: any) {
   // duck-type Error, see #2549
   const isError =
     typeof potentialError === 'object' &&
+    potentialError !== null &&
     typeof potentialError.message === 'string' &&
     typeof potentialError.name === 'string';
   const message = isError