refactor: Add lint rule no-unused-param-in-catch-clause (#5868)

👕 Add lint rule `no-unused-param-in-catch-clause`

packages/@n8n_io/eslint-config/base.js

@@ -343,6 +343,8 @@ const config = (module.exports = {
 
 		'n8n-local-rules/no-interpolation-in-regular-string': 'error',
 
+		'n8n-local-rules/no-unused-param-in-catch-clause': 'error',
+
 		// ******************************************************************
 		//                    overrides to base ruleset
 		// ******************************************************************

packages/@n8n_io/eslint-config/local-rules.js

@@ -140,6 +140,36 @@ module.exports = {
 		},
 	},
 
+	'no-unused-param-in-catch-clause': {
+		meta: {
+			type: 'problem',
+			docs: {
+				description: 'Unused param in catch clause must be omitted.',
+				recommended: 'error',
+			},
+			messages: {
+				removeUnusedParam: 'Remove unused param in catch clause',
+			},
+			fixable: 'code',
+		},
+		create(context) {
+			return {
+				CatchClause(node) {
+					if (node.param?.name.startsWith('_')) {
+						const start = node.range[0] + 'catch '.length;
+						const end = node.param.range[1] + '()'.length;
+
+						context.report({
+							messageId: 'removeUnusedParam',
+							node,
+							fix: (fixer) => fixer.removeRange([start, end]),
+						});
+					}
+				},
+			};
+		},
+	},
+
 	'no-interpolation-in-regular-string': {
 		meta: {
 			type: 'problem',

packages/cli/src/CommunityNodes/helpers.ts

@@ -216,7 +216,7 @@ export function removePackageFromMissingList(packageName: string): void {
 		);
 
 		config.set('nodes.packagesMissing', packageFailedToLoad.join(' '));
-	} catch (_error) {
+	} catch {
 		// Do nothing
 	}
 }

packages/nodes-base/nodes/Github/SearchFunctions.ts

@@ -72,7 +72,7 @@ export async function getRepositories(
 			{},
 			{ q, page, per_page },
 		);
-	} catch (_error) {
+	} catch {
 		// will fail if the owner does not have any repositories
 	}
 

packages/workflow/src/Extensions/StringExtensions.ts

@@ -185,7 +185,7 @@ function isUrl(value: string) {
 	let url: URL;
 	try {
 		url = new URL(value);
-	} catch (_error) {
+	} catch {
 		return false;
 	}