Current Dev State

static/js/ketcher2/node_modules/eslint/lib/rules/use-isnan.js

@@ -0,0 +1,34 @@
+/**
+ * @fileoverview Rule to flag comparisons to the value NaN
+ * @author James Allardice
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require calls to `isNaN()` when checking for `NaN`",
+            category: "Possible Errors",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        return {
+            BinaryExpression(node) {
+                if (/^(?:[<>]|[!=]=)=?$/.test(node.operator) && (node.left.name === "NaN" || node.right.name === "NaN")) {
+                    context.report({ node, message: "Use the isNaN function to compare with NaN." });
+                }
+            }
+        };
+
+    }
+};