doc: Add example of null to assert.ifError

PR-URL: #18236 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Michaël Zasso <targos@protonmail.com>
nodejs · Jan 30, 2018 · 01599e2 · 01599e2
1 parent 1556228
commit 01599e2
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/doc/api/assert.md b/doc/api/assert.md
@@ -375,6 +375,8 @@ argument in callbacks.
 ```js
 const assert = require('assert');
 
+assert.ifError(null);
+// OK
 assert.ifError(0);
 // OK
 assert.ifError(1);