CLI: Remove any return type of getAbsolutePath

[nzws]

What I did

Removes the unnecessary any return type from the auto-generated getAbsolutePath function in the .storybook/main.ts file of monorepo projects.

This function always return a string. I also checked past PRs related to this code but found no clear reason why the any type was specified. In general, when a project uses linter like ESLint, the any type would trigger an error, so unnecessary any types should not be used.

ref: https://nodejs.org/docs/latest-v20.x/api/path.html#pathdirnamepath
ref: #23458

Checklist for Contributors

Testing

The changes in this PR are covered in the following automated tests:

• stories
• unit tests
• integration tests
• end-to-end tests

Manual testing

Since I wasn’t sure how to create a monorepo project on the Storybook sandbox, I manually set up the environment.

1. Create a monorepo project with npx create-turbo@latest
2. Inside the generated frontend application, run yarn add path/to/create-storybook
3. Run yarn create-storybook
4. After completion, check the output of .storybook/main.ts

Documentation

• Add or update documentation reflecting your changes
• If you are deprecating/removing a feature, make sure to update
  MIGRATION.MD

Checklist for Maintainers

• When this PR is ready for testing, make sure to add ci:normal, ci:merged or ci:daily GH label to it to run a specific set of sandboxes. The particular set of sandboxes can be found in code/lib/cli-storybook/src/sandbox-templates.ts

• Make sure this PR contains one of the labels below:

  Available labels

  • bug: Internal changes that fixes incorrect behavior.
  • maintenance: User-facing maintenance tasks.
  • dependencies: Upgrading (sometimes downgrading) dependencies.
  • build: Internal-facing build tooling & test updates. Will not show up in release changelog.
  • cleanup: Minor cleanup style change. Will not show up in release changelog.
  • documentation: Documentation only changes. Will not show up in release changelog.
  • feature request: Introducing a new feature.
  • BREAKING CHANGE: Changes that break compatibility in some way with current major version.
  • other: Changes that don't fit in the above categories.

🦋 Canary release

This PR does not have a canary release associated. You can request a canary release of this pull request by mentioning the @storybookjs/core team here.

core team members can create a canary release here or locally with gh workflow run --repo storybookjs/storybook publish.yml --field pr=<PR_NUMBER>

Summary by CodeRabbit

• Refactor
  • Improved TypeScript type annotations for internal functions to enhance code quality.

[coderabbitai]

📝 Walkthrough

Walkthrough

A single function's explicit return type annotation has been removed from a generated code snippet within the baseGenerator, changing the getAbsolutePath function signature by dropping the : any type indicator.

Changes

Cohort / File(s)	Summary
Type annotation removal code/lib/create-storybook/src/generators/baseGenerator.ts	Removed explicit : any return type annotation from getAbsolutePath function signature in generated main.js template string

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

✨ Finishing touches

• 📝 Generate docstrings

---

📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between b9695ea and 4ee83ef.

📒 Files selected for processing (1)

• code/lib/create-storybook/src/generators/baseGenerator.ts (1 hunks)

🧰 Additional context used

📓 Path-based instructions (4)

**/*.{js,jsx,json,html,ts,tsx,mjs}

📄 CodeRabbit inference engine (.github/copilot-instructions.md)

**/*.{js,jsx,json,html,ts,tsx,mjs}: Run Prettier formatting on changed files before committing
Run ESLint on changed files and fix all errors/warnings before committing (use yarn lint:js:cmd <file>)

Files:

• code/lib/create-storybook/src/generators/baseGenerator.ts

**/*.{ts,tsx,js,jsx,mjs}

📄 CodeRabbit inference engine (.github/copilot-instructions.md)

Export functions from modules when they need to be unit-tested

Files:

• code/lib/create-storybook/src/generators/baseGenerator.ts

code/**/*.{ts,tsx,js,jsx,mjs}

📄 CodeRabbit inference engine (.github/copilot-instructions.md)

In application code, use Storybook loggers instead of console.* (client code: storybook/internal/client-logger; server code: storybook/internal/node-logger)

Files:

• code/lib/create-storybook/src/generators/baseGenerator.ts

{code/**,scripts/**}/**/*.{ts,tsx,js,jsx,mjs}

📄 CodeRabbit inference engine (.github/copilot-instructions.md)

Do not use console.log, console.warn, or console.error directly unless in isolated files where importing loggers would significantly increase bundle size

Files:

• code/lib/create-storybook/src/generators/baseGenerator.ts

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)

• GitHub Check: normal

🔇 Additional comments (1)

code/lib/create-storybook/src/generators/baseGenerator.ts (1)

418-420: LGTM! Removing the unnecessary any type annotation.

TypeScript will correctly infer the return type as string from the implementation, since dirname() returns a string. This change improves type safety and resolves potential linting errors in generated projects.

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[storybook-app-bot]

Package Benchmarks

^{Commit: 4ee83ef, ran on 10 November 2025 at 14:36:43 UTC}

The following packages have significant changes to their size or dependencies:

@storybook/react-native-web-vite

	Before	After	Difference
Dependency count	156	157	🚨 +1 🚨
Self size	31 KB	31 KB	🚨 +150 B 🚨
Dependency size	23.05 MB	23.11 MB	🚨 +64 KB 🚨
Bundle Size Analyzer	Link	Link