[node:dns] Fix unnecessary array creation + prettier

1 files changed, 6 insertions, 9 deletions

diff --git a/src/js/node/dns.js b/src/js/node/dns.js
index bb59e702f..e82e6a4b5 100644
--- a/src/js/node/dns.js
+++ b/src/js/node/dns.js
@@ -19,15 +19,12 @@ function lookup(domain, options, callback) {
     options = { family: options };
   }
 
-  const invalidDomainValues = [
-    undefined,
-    false,
-    null,
-    ""
-  ];
-
-  if(Number.isNaN(domain) || invalidDomainValues.some(value => domain === value)) {
-    console.warn(`DeprecationWarning: The provided hostname "${String(domain)}" is not a valid hostname, and is supported in the dns module solely for compatibility.`);
+  if (domain !== domain || (typeof domain !== "number" && !domain)) {
+    console.warn(
+      `DeprecationWarning: The provided hostname "${String(
+        domain,
+      )}" is not a valid hostname, and is supported in the dns module solely for compatibility.`,
+    );
     callback(null, null, 4);
     return;
   }