doc: Add example of null to assert.ifError

PR-URL: nodejs#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]>
BridgeAR · Jan 21, 2018 · 08ada72 · 08ada72
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commit 08ada72
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/doc/api/assert.md b/doc/api/assert.md
@@ -442,6 +442,8 @@ argument in callbacks.
 ```js
 const assert = require('assert').strict;
 
+assert.ifError(null);
+// OK
 assert.ifError(0);
 // OK
 assert.ifError(1);