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TypeScript discriminated unions: variants and invalid states v1.0.0

Use this resource to model mutually exclusive variants with TypeScript discriminated unions

New

  • 446 downloads
  • 187 likes
  • 167 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install typescript-discriminated-unions

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent spots objects whose fields depend on a variant, replaces them with a discriminated union, then checks that every case is handled. It avoids forcing the pattern when a single shape is enough.

Mostly picked by

Updated November 2, 2026

Card for the “TypeScript discriminated unions: variants and invalid states” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: workflow, scope and modeling rules
  • SKILL.md: practical uses: application state, function arguments and React props

Good fit for

  • An object has optional fields that only apply to some cases
  • A state can be loading, success or error, and invalid combinations are possible

Not for

    Tags

    • TypeScript
    • discriminated unions
    • modeling
    • states
    • exhaustiveness

    About

    You say

    “Model this loading state as a discriminated union: loading, success and error.”

    Card for the “TypeScript discriminated unions: variants and invalid states” skill

    Skill published by mkosir under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to model mutually exclusive variants with TypeScript discriminated unions
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md10 KB

    Origin and licence

    Listed unmodified

    Author
    mkosir
    Source
    github.com/mkosir/typescript-style-guide/tree/170074a0df9b07f4a4a78e3596ec1edf06a14da7/skills/typescript-discriminated-unions
    Licence
    MIT

    Notice

    « typescript-discriminated-unions » (mkosir, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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