doc,url: clarify domainTo* when built without ICU

Continuation of: nodejs#35099 Signed-off-by: Darshan Sen <[email protected]> PR-URL: nodejs#38789 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>
foxxyz · Oct 18, 2021 · d81846d · d81846d
1 parent 0efdeea
commit d81846d
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/doc/api/url.md b/doc/api/url.md
@@ -913,6 +913,9 @@ 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.
+
 ```js
 const url = require('url');
 console.log(url.domainToASCII('español.com'));
@@ -938,6 +941,9 @@ 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.
+
 ```js
 const url = require('url');
 console.log(url.domainToUnicode('xn--espaol-zwa.com'));