Update message to an optional type

jestjs · Sep 29, 2018 · eb2c1f6 · eb2c1f6
1 parent 7b73d44
commit eb2c1f6
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/jest-util/src/error_with_stack.js b/packages/jest-util/src/error_with_stack.js
@@ -8,7 +8,7 @@
  */
 
 export default class ErrorWithStack extends Error {
-  constructor(message: string, callsite: Function) {
+  constructor(message: ?string, callsite: Function) {
     super(message);
     if (Error.captureStackTrace) {
       Error.captureStackTrace(this, callsite);