fix incorrect grouping in conditional as result linting

see #3017
mochajs · Sep 29, 2017 · 547612c · 547612c
1 parent 0f816ac
commit 547612c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/runner.js b/lib/runner.js
@@ -229,7 +229,7 @@ Runner.prototype.fail = function (test, err) {
   ++this.failures;
   test.state = 'failed';
 
-  if (!((err instanceof Error || err) && typeof err.message === 'string')) {
+  if (!(err instanceof Error || (err && typeof err.message === 'string'))) {
     err = new Error('the ' + type(err) + ' ' + stringify(err) + ' was thrown, throw an Error :)');
   }