Arktype patterns for discriminated unions using .merge() and .or(), spread key syntax, and type composition. Use when building union types, combining base schemas with variants, or defining command/event schemas with arktype.
Quickly install arktype AI skill to your development environment via command line
Source: epicenterhq/epicenter.
Patterns for composing discriminated unions with arktype's .merge() and .or() methods.
Use when you have shared base fields and per-variant payloads discriminated on a literal key. .merge() distributes over unions — it merges the base into each branch of the union automatically.
| Base is a real Type | Reusable, composable, inspectable at runtime | | .merge() distributes | No need to repeat base.merge(...) per variant | | type.or() is flat | All variants in one list — easy to read and add to | | Base appears once | DRY — change base fields in one place | | Auto-discrimination | No manual discriminant config needed |
Arktype patterns for discriminated unions using .merge() and .or(), spread key syntax, and type composition. Use when building union types, combining base schemas with variants, or defining command/event schemas with arktype. Source: epicenterhq/epicenter.
Stable fields and commands for AI/search citations.
npx skills add https://github.com/epicenterhq/epicenter --skill arktypeArktype patterns for discriminated unions using .merge() and .or(), spread key syntax, and type composition. Use when building union types, combining base schemas with variants, or defining command/event schemas with arktype. Source: epicenterhq/epicenter.
Open your terminal or command line tool (Terminal, iTerm, Windows Terminal, etc.) Copy and run this command: npx skills add https://github.com/epicenterhq/epicenter --skill arktype Once installed, the skill will be automatically configured in your AI coding environment and ready to use in Claude Code, Cursor, or OpenClaw
https://github.com/epicenterhq/epicenter