doc,url: clarify domainTo* when built without ICU

Continuation of: #35099 Signed-off-by: Darshan Sen <raisinten@gmail.com>
nodejs · May 25, 2021 · 17b38d7 · 17b38d7
1 parent 7afa7b9
commit 17b38d7
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/doc/api/url.md b/doc/api/url.md
@@ -942,6 +942,9 @@ invalid domain, the empty string is returned.
 
 It performs the inverse operation to [`url.domainToUnicode()`][].
 
+This feature is only available if the `node` executable was compiled with
+[ICU][] enabled. If not, the domain names are passed through unchanged.
+
 ```mjs
 import url from 'url';
 
@@ -979,6 +982,9 @@ domain, the empty string is returned.
 
 It performs the inverse operation to [`url.domainToASCII()`][].
 
+This feature is only available if the `node` executable was compiled with
+[ICU][] enabled. If not, the domain names are passed through unchanged.
+
 ```mjs
 import url from 'url';