@arki/ts

TypeScript utility types — Prettify, DeepPartial, SnakeToCamel, RecordToPath, and other type helpers.

Installation

npm install @arki/ts
# or
bun add @arki/ts
# or
pnpm add @arki/ts

Usage

import type {
  Prettify,
  DeepPartial,
  DeepRequired,
  SnakeToCamel,
  CamelToSnake,
  RecordToPath,
  PathValue,
  Nullable,
  Serializable,
  Autocomplete,
  Without,
} from '@arki/ts';

type Flat = Prettify<{ a: string } & { b: number }>;
// { a: string; b: number }

type Optional = DeepPartial<{ a: { b: { c: number } } }>;
// { a?: { b?: { c?: number } } }

type CamelKeys = SnakeToCamel<'user_name'>;
// 'userName'

const config = { http: { port: 8080 } } as const;
type Path = RecordToPath<typeof config>;
// 'http' | 'http.port'
type Value = PathValue<typeof config, 'http.port'>;
// 8080

API

Object shape helpers

• Prettify<T> — flatten an intersection so the IDE shows the resolved shape.
• DeepPartial<T> — recursively mark every property optional.
• DeepRequired<T> — recursively mark every property required.
• Nullable<T, K> — make selected keys nullable.
• Without<T, W> — Omit variant that does not flatten unions.
• Serializable<T> — strip non-serializable (function) props.

Casing

• SnakeToCamel<T> / DeepSnakeToCamel<T> — convert snake_case to camelCase, optionally recursing.
• CamelToSnake<T> / DeepCamelToSnake<T> — reverse direction.

Path helpers

• RecordToPath<T> — union of all nested keys ('a' | 'a.b' | 'c').
• PathValue<T, P> — read the type at a dotted path.

Misc

• Autocomplete<U, T> — union that still autocompletes literal members.

Subpath imports

Individual modules are also exposed:

import type { Prettify } from '@arki/ts/prettify';
import type { DeepPartial } from '@arki/ts/utils';

Documentation

@arki/ts is framework-agnostic and works on its own. When you compose it with the @arki/dot application framework, see packages/dot/docs/ for plugin authoring, lifecycle, and diagnostics.

License

MIT. See LICENSE.