Update: improve isNaNIdentifier to detect Number.isNaN (fixes #14715

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eslint · Jun 18, 2021 · e4d0b42 · e4d0b42
1 parent a47e5e3
commit e4d0b42
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/lib/rules/use-isnan.js b/lib/rules/use-isnan.js
@@ -21,7 +21,10 @@ const astUtils = require("./utils/ast-utils");
  * @returns {boolean} `true` if the node is 'NaN' identifier.
  */
 function isNaNIdentifier(node) {
-    return Boolean(node) && node.type === "Identifier" && node.name === "NaN";
+    return Boolean(node) && (node.type === "Identifier" && node.name === "NaN" ||
+        (node.type === "MemberExpression" &&
+        node.object.type === "Identifier" && node.object.name === "Number" &&
+        node.property.type === "Identifier" && node.property.name === "NaN"));
 }
 
 //------------------------------------------------------------------------------