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Frontend-Learner/node_modules/eslint/lib/rules/no-useless-catch.js

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+/**
+ * @fileoverview Reports useless `catch` clauses that just rethrow their error.
+ * @author Teddy Katz
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../types').Rule.RuleModule} */
+module.exports = {
+	meta: {
+		type: "suggestion",
+
+		docs: {
+			description: "Disallow unnecessary `catch` clauses",
+			recommended: true,
+			url: "https://eslint.org/docs/latest/rules/no-useless-catch",
+		},
+
+		schema: [],
+
+		messages: {
+			unnecessaryCatchClause: "Unnecessary catch clause.",
+			unnecessaryCatch: "Unnecessary try/catch wrapper.",
+		},
+	},
+
+	create(context) {
+		return {
+			CatchClause(node) {
+				if (
+					node.param &&
+					node.param.type === "Identifier" &&
+					node.body.body.length &&
+					node.body.body[0].type === "ThrowStatement" &&
+					node.body.body[0].argument.type === "Identifier" &&
+					node.body.body[0].argument.name === node.param.name
+				) {
+					if (node.parent.finalizer) {
+						context.report({
+							node,
+							messageId: "unnecessaryCatchClause",
+						});
+					} else {
+						context.report({
+							node: node.parent,
+							messageId: "unnecessaryCatch",
+						});
+					}
+				}
+			},
+		};
+	},
+};