refactor: extract wizard infrastructure into utils

packages/create-cli/src/index.ts

@@ -1,5 +1,4 @@
 #! /usr/bin/env node
-import yargs from 'yargs';
 import { hideBin } from 'yargs/helpers';
 import { axeSetupBinding } from '@code-pushup/axe-plugin';
 import { coverageSetupBinding } from '@code-pushup/coverage-plugin';
@@ -8,13 +7,8 @@ import { jsPackagesSetupBinding } from '@code-pushup/js-packages-plugin';
 import { jsDocsSetupBinding } from '@code-pushup/jsdocs-plugin';
 import { lighthouseSetupBinding } from '@code-pushup/lighthouse-plugin';
 import { typescriptSetupBinding } from '@code-pushup/typescript-plugin';
-import { parsePluginSlugs, validatePluginSlugs } from './lib/setup/plugins.js';
-import {
-  CI_PROVIDERS,
-  CONFIG_FILE_FORMATS,
-  type PluginSetupBinding,
-  SETUP_MODES,
-} from './lib/setup/types.js';
+import { yargsCli } from './lib/setup/cli-args.js';
+import type { PluginSetupBinding } from './lib/setup/types.js';
 import { runSetupWizard } from './lib/setup/wizard.js';
 
 const bindings: PluginSetupBinding[] = [
@@ -27,42 +21,6 @@ const bindings: PluginSetupBinding[] = [
   jsDocsSetupBinding,
 ];
 
-const argv = await yargs(hideBin(process.argv))
-  .option('dry-run', {
-    type: 'boolean',
-    default: false,
-    describe: 'Preview changes without writing files',
-  })
-  .option('yes', {
-    alias: 'y',
-    type: 'boolean',
-    default: false,
-    describe: 'Skip prompts and use defaults',
-  })
-  .option('config-format', {
-    type: 'string',
-    choices: CONFIG_FILE_FORMATS,
-    describe: 'Config file format (default: auto-detected from project)',
-  })
-  .option('plugins', {
-    type: 'string',
-    describe: 'Comma-separated plugin slugs to include (e.g. eslint,coverage)',
-    coerce: parsePluginSlugs,
-  })
-  .option('mode', {
-    type: 'string',
-    choices: SETUP_MODES,
-    describe: 'Setup mode (default: auto-detected from project)',
-  })
-  .option('ci', {
-    type: 'string',
-    choices: CI_PROVIDERS,
-    describe: 'CI/CD integration (github, gitlab, or none)',
-  })
-  .check(parsed => {
-    validatePluginSlugs(bindings, parsed.plugins);
-    return true;
-  })
-  .parse();
+const argv = await yargsCli(bindings).parse(hideBin(process.argv));
 
 await runSetupWizard(bindings, argv);

packages/create-cli/src/lib/setup/ci.unit.test.ts

@@ -1,9 +1,9 @@
 import { select } from '@inquirer/prompts';
 import { vol } from 'memfs';
 import { MEMFS_VOLUME } from '@code-pushup/test-utils';
+import { createTree } from '@code-pushup/utils';
 import { promptCiProvider, resolveCi } from './ci.js';
 import type { ConfigContext } from './types.js';
-import { createTree } from './virtual-fs.js';
 
 vi.mock('@inquirer/prompts', () => ({
   select: vi.fn(),

packages/create-cli/src/lib/setup/cli-args.ts

@@ -0,0 +1,53 @@
+import yargs, { type Argv } from 'yargs';
+import { parsePluginSlugs, validatePluginSlugs } from './plugins.js';
+import {
+  CI_PROVIDERS,
+  CONFIG_FILE_FORMATS,
+  type PluginSetupBinding,
+  SETUP_MODES,
+} from './types.js';
+
+export function yargsCli(bindings: PluginSetupBinding[]): Argv {
+  return yargs()
+    .scriptName('create-cli')
+    .usage('$0 [options]')
+    .parserConfiguration({ 'dot-notation': false })
+    .option('dry-run', {
+      type: 'boolean',
+      default: false,
+      describe: 'Preview changes without writing files',
+    })
+    .option('yes', {
+      alias: 'y',
+      type: 'boolean',
+      default: false,
+      describe: 'Skip prompts and use defaults',
+    })
+    .option('config-format', {
+      type: 'string',
+      choices: CONFIG_FILE_FORMATS,
+      describe: 'Config file format (default: auto-detected from project)',
+    })
+    .option('plugins', {
+      type: 'string',
+      describe:
+        'Comma-separated plugin slugs to include (e.g. eslint,coverage)',
+      coerce: parsePluginSlugs,
+    })
+    .option('mode', {
+      type: 'string',
+      choices: SETUP_MODES,
+      describe: 'Setup mode (default: auto-detected from project)',
+    })
+    .option('ci', {
+      type: 'string',
+      choices: CI_PROVIDERS,
+      describe: 'CI/CD integration (github, gitlab, or none)',
+    })
+    .check(parsed => {
+      validatePluginSlugs(bindings, parsed.plugins);
+      return true;
+    })
+    .help()
+    .version();
+}

packages/create-cli/src/lib/setup/cli-args.unit.test.ts

@@ -0,0 +1,34 @@
+import { yargsCli } from './cli-args.js';
+import type { PluginSetupBinding } from './types.js';
+
+const bareBindings: PluginSetupBinding[] = [
+  {
+    slug: 'eslint',
+    title: 'ESLint',
+    packageName: '@code-pushup/eslint-plugin',
+    generateConfig: () => ({ imports: [], pluginInit: [] }),
+  },
+];
+
+describe('yargsCli', () => {
+  it('should expose --eslint.patterns as a flat key', async () => {
+    const argv = await yargsCli(bareBindings).parse([
+      '--eslint.patterns',
+      'src',
+    ]);
+
+    expect(argv['eslint.patterns']).toBe('src');
+  });
+
+  it('should expose --no-eslint.categories as a flat false', async () => {
+    const argv = await yargsCli(bareBindings).parse(['--no-eslint.categories']);
+
+    expect(argv['eslint.categories']).toBeFalse();
+  });
+
+  it('should expose --eslint.categories without a value as a flat true', async () => {
+    const argv = await yargsCli(bareBindings).parse(['--eslint.categories']);
+
+    expect(argv['eslint.categories']).toBeTrue();
+  });
+});

packages/create-cli/src/lib/setup/gitignore.unit.test.ts

@@ -1,8 +1,8 @@
 import { vol } from 'memfs';
 import { readFile } from 'node:fs/promises';
 import { MEMFS_VOLUME } from '@code-pushup/test-utils';
+import { createTree } from '@code-pushup/utils';
 import { resolveGitignore } from './gitignore.js';
-import { createTree } from './virtual-fs.js';
 
 describe('resolveGitignore', () => {
   it('should create .gitignore with comment when it does not exist', async () => {

packages/create-cli/src/lib/setup/monorepo.unit.test.ts

@@ -1,10 +1,9 @@
 import { select } from '@inquirer/prompts';
 import { vol } from 'memfs';
 import { MEMFS_VOLUME } from '@code-pushup/test-utils';
-import { logger } from '@code-pushup/utils';
+import { createTree, logger } from '@code-pushup/utils';
 import { addCodePushUpCommand, promptSetupMode } from './monorepo.js';
 import type { WizardProject } from './types.js';
-import { createTree } from './virtual-fs.js';
 
 vi.mock('@inquirer/prompts', () => ({
   select: vi.fn(),

packages/create-cli/src/lib/setup/types.ts

@@ -1,16 +1,19 @@
 import type { PluginCodegenResult } from '@code-pushup/models';
-import type { MonorepoTool } from '@code-pushup/utils';
+import type { MonorepoTool, Tree } from '@code-pushup/utils';
 
 export type {
   CategoryCodegenConfig,
   ImportDeclarationStructure,
   PluginAnswer,
+  PluginCodegenInput,
   PluginCodegenResult,
   PluginPromptDescriptor,
   PluginSetupBinding,
   PluginSetupTree,
 } from '@code-pushup/models';
 
+export type { FileChange, FileSystemAdapter, Tree } from '@code-pushup/utils';
+
 export const CI_PROVIDERS = ['github', 'gitlab', 'none'] as const;
 export type CiProvider = (typeof CI_PROVIDERS)[number];
 
@@ -58,31 +61,3 @@ export type WriteContext = {
   configFilename: string;
   isEsm: boolean;
 };
-
-/** A single file operation recorded by the virtual tree. */
-export type FileChange = {
-  path: string;
-  type: 'CREATE' | 'UPDATE';
-  content: string;
-};
-
-/** Virtual file system that buffers writes in memory until flushed to disk. */
-export type Tree = {
-  root: string;
-  exists: (filePath: string) => Promise<boolean>;
-  read: (filePath: string) => Promise<string | null>;
-  write: (filePath: string, content: string) => Promise<void>;
-  listChanges: () => FileChange[];
-  flush: () => Promise<void>;
-};
-
-/** Abstraction over `node:fs` used by the virtual tree for disk I/O. */
-export type FileSystemAdapter = {
-  readFile: (path: string, encoding: 'utf8') => Promise<string>;
-  writeFile: (path: string, content: string) => Promise<void>;
-  exists: (path: string) => Promise<boolean>;
-  mkdir: (
-    path: string,
-    options: { recursive: true },
-  ) => Promise<string | undefined>;
-};