Add components

slider/node_modules/eslint/lib/rules/no-eq-null.js

@@ -0,0 +1,51 @@
+/**
+ * @fileoverview Rule to flag comparisons to null without a type-checking
+ * operator.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../types').Rule.RuleModule} */
+module.exports = {
+	meta: {
+		type: "suggestion",
+
+		docs: {
+			description:
+				"Disallow `null` comparisons without type-checking operators",
+			recommended: false,
+			url: "https://eslint.org/docs/latest/rules/no-eq-null",
+		},
+
+		schema: [],
+
+		messages: {
+			unexpected: "Use '===' to compare with null.",
+		},
+	},
+
+	create(context) {
+		return {
+			BinaryExpression(node) {
+				const badOperator =
+					node.operator === "==" || node.operator === "!=";
+
+				if (
+					(node.right.type === "Literal" &&
+						node.right.raw === "null" &&
+						badOperator) ||
+					(node.left.type === "Literal" &&
+						node.left.raw === "null" &&
+						badOperator)
+				) {
+					context.report({ node, messageId: "unexpected" });
+				}
+			},
+		};
+	},
+};