sindresorhus

    sindresorhus/type-fest

    #547 this week

    A collection of essential TypeScript types

    web
    npm-package
    types
    typescript
    typescript-definitions
    utilities
    TypeScript
    CC0-1.0
    17.5K stars
    743 forks
    17.5K GitHub watchers
    Updated Oct 16, 2026
    View on GitHub

    Build with Backblaze B2

    SDKs, agent skills, IDE extensions, and reference pipelines from Backblaze Labs. All open source.

    Explore Backblaze Labs

    Loading star history...

    Where it stands

    Rank, growth pace and release cadence relative to everything GStars tracks.

    Ranks #547 of 2,845 repositories GStars tracks this week (top 19%).

    2 releases in the last 90 days, the latest 29 days ago, with 220 contributors on GitHub.

    Gained 36% fewer stars in the last 90 days than in the 90 days before.

    Use Cases & Benefits

    • Provides a comprehensive collection of essential TypeScript types to enhance type safety and expressiveness in projects.
    • Offers a wide variety of reusable, well-maintained types that fill gaps not covered by built-in TypeScript types, improving developer productivity.
    • Use for improving type definitions in TypeScript projects to ensure stricter type checking and reduce runtime errors.
    • Use for creating complex type utilities like deep merges, conditional picks, and readonly transformations in large-scale applications.
    • Use for building type-safe APIs and libraries that require precise and expressive type manipulations to improve code maintainability.

    Should you depend on it?

    License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.

    License

    CC0 1.0

    Public-domain style: no conditions on use.

    Community files

    • README: present
    • Contributing guide: present
    • Code of conduct: present

    Watch-outs

    No watch-outs from GStars' checks.

    General guidance from repository metadata, not legal advice. How we score

    From the README

    A collection of essential TypeScript types

    Effortless backends with infrastructure from code

    Many of the types here should have been built-in. You can help by suggesting some of them to the TypeScript project.

    Either add this package as a dependency or copy-paste the needed types. No credit required. 👌

    PR welcome for additional commonly needed types and docs improvements. Read the contributing guidelines first.

    Help wanted with reviewing proposals and pull requests.

    Requires TypeScript >=5.9, ESM, and {strict: true} in your tsconfig.

    Excerpt from the sindresorhus/type-fest README on GitHub (CC0-1.0 license). © its authors.Read the full README on GitHub

    Daily snapshots

    Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots

    Forks

    743+18

    Open issues

    108-106

    Compared with peers in Web

    Fastest-growing repositories GStars tracks in this cohort for the week of Oct 11, by 7-day star growth

    sindresorhus/type-fest compared with Web repositories by stars, 7-day star growth, health score and last release
    RepositoryStars+7dHealthLast release
    mksglu/context-mode31.8K+4.2K75115 days ago
    MadsLorentzen/ai-job-search60.6K+2.8K601 day ago
    pbakaus/impeccable85.0K+2.6K753 days ago
    vercel-labs/skills36.2K+1.7K553 days ago
    DmNote-App/DmNote5.2K+1.6K7550 days ago
    sindresorhus/type-fest17.5K+07529 days ago
    Category median36.2K+2.6K75—

    Also by sindresorhus

    Other repositories from this maintainer that GStars tracks

    Discover Repositories

    Search across tracked repositories by name or description