diff --git a/packages/codegen/bin/cmk.mjs b/packages/codegen/bin/cmk.mjs
index 80e24f37..e2816a63 100755
--- a/packages/codegen/bin/cmk.mjs
+++ b/packages/codegen/bin/cmk.mjs
@@ -19,7 +19,7 @@ try {
     process.exit(0);
   }
 
-  await runCMK(args.project, args.clean, logger);
+  await runCMK(args, logger);
 } catch (e) {
   if (e instanceof SystemError) {
     logger.logSystemError(e);
diff --git a/packages/codegen/src/runner.test.ts b/packages/codegen/src/runner.test.ts
index 093eea46..04a35b57 100644
--- a/packages/codegen/src/runner.test.ts
+++ b/packages/codegen/src/runner.test.ts
@@ -4,12 +4,11 @@ import dedent from 'dedent';
 import { describe, expect, test } from 'vitest';
 import { ReadCSSModuleFileError } from './error.js';
 import { runCMK } from './runner.js';
+import { fakeParsedArgs } from './test/faker.js';
 import { createIFF } from './test/fixture.js';
 import { createLoggerSpy } from './test/logger.js';
 import { mockProcessExit, ProcessExitError } from './test/process.js';
 
-const clean = false;
-
 function formatDiagnostic(diagnostic: Diagnostic, rootDir: string) {
   return {
     text: diagnostic.text.replace(rootDir, '<rootDir>'),
@@ -40,7 +39,7 @@ describe('runCMK', () => {
       'src/a.module.css': '.a1 { color: red; }',
       'src/b.module.css': '.b1 { color: blue; }',
     });
-    await runCMK(iff.rootDir, clean, createLoggerSpy());
+    await runCMK(fakeParsedArgs({ project: iff.rootDir }), createLoggerSpy());
     expect(await iff.readFile('generated/src/a.module.css.d.ts')).toMatchInlineSnapshot(`
       "// @ts-nocheck
       declare const styles = {
@@ -68,7 +67,7 @@ describe('runCMK', () => {
       'src/a.module.css': '.a1 { color: red; }',
       'src/b.css': '.b1 { color: red; }',
     });
-    await runCMK(iff.rootDir, clean, createLoggerSpy());
+    await runCMK(fakeParsedArgs({ project: iff.rootDir }), createLoggerSpy());
     await expect(access(iff.join('generated/src/a.module.css.d.ts'))).resolves.not.toThrow();
     await expect(access(iff.join('generated/src/b.css.d.ts'))).rejects.toThrow();
   });
@@ -83,7 +82,7 @@ describe('runCMK', () => {
       'src/b.module.css': '.b1 { color: blue; }',
       'src/c.css': '.c1 { color: red; }',
     });
-    await runCMK(iff.rootDir, clean, createLoggerSpy());
+    await runCMK(fakeParsedArgs({ project: iff.rootDir }), createLoggerSpy());
     expect(await iff.readFile('generated/src/a.module.css.d.ts')).toMatchInlineSnapshot(`
       "// @ts-nocheck
       declare const styles = {
@@ -102,7 +101,7 @@ describe('runCMK', () => {
       `,
     });
     const loggerSpy = createLoggerSpy();
-    await runCMK(iff.rootDir, clean, loggerSpy);
+    await runCMK(fakeParsedArgs({ project: iff.rootDir }), loggerSpy);
     expect(loggerSpy.logDiagnostics).toHaveBeenCalledTimes(1);
     expect(formatDiagnostics(loggerSpy.logDiagnostics.mock.calls[0]![0], iff.rootDir)).toMatchInlineSnapshot(`
       [
@@ -123,7 +122,9 @@ describe('runCMK', () => {
       'src/a.module.css': '.a1 { color: red; }',
     });
     await chmod(iff.paths['src/a.module.css'], 0o200); // Remove read permission
-    await expect(runCMK(iff.rootDir, clean, createLoggerSpy())).rejects.toThrow(ReadCSSModuleFileError);
+    await expect(runCMK(fakeParsedArgs({ project: iff.rootDir }), createLoggerSpy())).rejects.toThrow(
+      ReadCSSModuleFileError,
+    );
   });
   test('support ./ in `pattern`', async () => {
     const iff = await createIFF({
@@ -135,7 +136,7 @@ describe('runCMK', () => {
       'src/a.module.css': `@import './b.css'; .a1 { color: red; }`,
       'src/b.css': '.b1 { color: red; }',
     });
-    await runCMK(iff.rootDir, clean, createLoggerSpy());
+    await runCMK(fakeParsedArgs({ project: iff.rootDir }), createLoggerSpy());
     expect(await iff.readFile('generated/src/a.module.css.d.ts')).toMatchInlineSnapshot(`
       "// @ts-nocheck
       declare const styles = {
@@ -155,7 +156,7 @@ describe('runCMK', () => {
       `,
     });
     const loggerSpy = createLoggerSpy();
-    await expect(runCMK(iff.rootDir, clean, loggerSpy)).rejects.toThrow(ProcessExitError);
+    await expect(runCMK(fakeParsedArgs({ project: iff.rootDir }), loggerSpy)).rejects.toThrow(ProcessExitError);
     expect(loggerSpy.logDiagnostics).toHaveBeenCalledTimes(1);
     expect(formatDiagnostics(loggerSpy.logDiagnostics.mock.calls[0]![0], iff.rootDir)).toMatchInlineSnapshot(`
       [
@@ -177,7 +178,7 @@ describe('runCMK', () => {
       'src/b.module.css': '@value;',
     });
     const loggerSpy = createLoggerSpy();
-    await expect(runCMK(iff.rootDir, clean, loggerSpy)).rejects.toThrow(ProcessExitError);
+    await expect(runCMK(fakeParsedArgs({ project: iff.rootDir }), loggerSpy)).rejects.toThrow(ProcessExitError);
     expect(loggerSpy.logDiagnostics).toHaveBeenCalledTimes(1);
     expect(formatDiagnostics(loggerSpy.logDiagnostics.mock.calls[0]![0], iff.rootDir)).toMatchInlineSnapshot(`
       [
@@ -220,7 +221,7 @@ describe('runCMK', () => {
       `,
     });
     const loggerSpy = createLoggerSpy();
-    await expect(runCMK(iff.rootDir, clean, loggerSpy)).rejects.toThrow(ProcessExitError);
+    await expect(runCMK(fakeParsedArgs({ project: iff.rootDir }), loggerSpy)).rejects.toThrow(ProcessExitError);
     expect(loggerSpy.logDiagnostics).toHaveBeenCalledTimes(1);
     expect(formatDiagnostics(loggerSpy.logDiagnostics.mock.calls[0]![0], iff.rootDir)).toMatchInlineSnapshot(`
       [
@@ -259,7 +260,7 @@ test('removes output directory before generating files when `clean` is true', as
     'src/a.module.css': '.a1 { color: red; }',
     'generated/src/old.module.css.d.ts': '',
   });
-  await runCMK(iff.rootDir, true, createLoggerSpy());
+  await runCMK(fakeParsedArgs({ project: iff.rootDir, clean: true }), createLoggerSpy());
   await expect(access(iff.join('generated/src/a.module.css.d.ts'))).resolves.not.toThrow();
   await expect(access(iff.join('generated/src/old.module.css.d.ts'))).rejects.toThrow();
 });
diff --git a/packages/codegen/src/runner.ts b/packages/codegen/src/runner.ts
index ca2424ad..b524d647 100644
--- a/packages/codegen/src/runner.ts
+++ b/packages/codegen/src/runner.ts
@@ -19,6 +19,7 @@ import {
   readConfigFile,
 } from '@css-modules-kit/core';
 import ts from 'typescript';
+import type { ParsedArgs } from './cli.js';
 import { writeDtsFile } from './dts-writer.js';
 import { ReadCSSModuleFileError } from './error.js';
 import type { Logger } from './logger/logger.js';
@@ -63,8 +64,8 @@ async function writeDtsByCSSModule(
  * @throws {ReadCSSModuleFileError} When failed to read CSS Module file.
  * @throws {WriteDtsFileError}
  */
-export async function runCMK(project: string, clean: boolean, logger: Logger): Promise<void> {
-  const config = readConfigFile(project);
+export async function runCMK(args: ParsedArgs, logger: Logger): Promise<void> {
+  const config = readConfigFile(args.project);
   if (config.diagnostics.length > 0) {
     logger.logDiagnostics(config.diagnostics);
     // eslint-disable-next-line n/no-process-exit
@@ -120,7 +121,7 @@ export async function runCMK(project: string, clean: boolean, logger: Logger): P
     process.exit(1);
   }
 
-  if (clean) {
+  if (args.clean) {
     await rm(config.dtsOutDir, { recursive: true, force: true });
   }
   await Promise.all(
diff --git a/packages/codegen/src/test/faker.ts b/packages/codegen/src/test/faker.ts
new file mode 100644
index 00000000..908cacf7
--- /dev/null
+++ b/packages/codegen/src/test/faker.ts
@@ -0,0 +1,12 @@
+import type { ParsedArgs } from '../cli.js';
+
+export function fakeParsedArgs(args?: Partial<ParsedArgs>): ParsedArgs {
+  return {
+    help: false,
+    version: false,
+    project: '.',
+    pretty: undefined,
+    clean: false,
+    ...args,
+  };
+}