feat(cli): use special errorCode for missing rules/config #4142

@commitlint/cli/src/cli.test.ts

@@ -107,7 +107,7 @@ test('should produce help for empty config', async () => {
 	const result = cli([], {cwd})('foo: bar');
 	const output = await result;
 	expect(output.stdout.trim()).toContain('Please add rules');
-	expect(result.exitCode).toBe(1);
+	expect(result.exitCode).toBe(9);
 });
 
 test('should produce help for problems', async () => {
@@ -137,7 +137,7 @@ test('should fail for input from stdin without rules', async () => {
 	const cwd = await gitBootstrap('fixtures/empty');
 	const result = cli([], {cwd})('foo: bar');
 	await result;
-	expect(result.exitCode).toBe(1);
+	expect(result.exitCode).toBe(9);
 });
 
 test('should succeed for input from stdin with rules', async () => {

@commitlint/cli/src/cli.ts

@@ -316,6 +316,7 @@ async function main(args: MainArgs): Promise<void> {
 		messages.map((message) => lint(message, loaded.rules, opts))
 	);
 
+	let isRulesEmpty = false;
 	if (Object.keys(loaded.rules).length === 0) {
 		let input = '';
 
@@ -340,6 +341,8 @@ async function main(args: MainArgs): Promise<void> {
 			warnings: [],
 			input,
 		});
+
+		isRulesEmpty = true;
 	}
 
 	const report = results.reduce<{
@@ -384,6 +387,9 @@ async function main(args: MainArgs): Promise<void> {
 			throw new CliError(output, pkg.name, 2);
 		}
 	}
+	if (!report.valid && isRulesEmpty) {
+		throw new CliError(output, pkg.name, 9);
+	}
 	if (!report.valid) {
 		throw new CliError(output, pkg.name);
 	}