doc: Add example of null to assert.ifError

PR-URL: #18236 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Michaël Zasso <[email protected]>
nodejs · Feb 27, 2018 · d554b8a · d554b8a
1 parent 74d86cc
commit d554b8a
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/doc/api/assert.md b/doc/api/assert.md
@@ -337,6 +337,8 @@ argument in callbacks.
 ```js
 const assert = require('assert');
 
+assert.ifError(null);
+// OK
 assert.ifError(0);
 // OK
 assert.ifError(1);