# justypes

> Dumb types for TypeScript in the real world

Latest version **4.5.0** (published 2026-02-15) · MIT license · 0 weekly downloads

## Install

```sh
npm install justypes
pnpm add justypes
yarn add justypes
bun add justypes
```

## Health

**Score 55/100 (C)** — status: stable.

Positive: has types; no vulnerabilities; high quality score.

Warnings: low downloads; no esm support.

## Facts

| | |
|---|---|
| Version | 4.5.0 |
| Published | 2026-02-15 |
| First published | 2021-03-17 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | bundled |
| Module format | CommonJS |
| Dependencies | 0 |
| Unpacked size | 16.4 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 0 |
| Author | BlackGlory |
| Maintainers | black_glory |
| Keywords | types, typescript |

## Links

- npm: https://www.npmjs.com/package/justypes
- Repository: https://github.com/BlackGlory/justypes
- Homepage: https://github.com/BlackGlory/justypes#readme
- Issues: https://github.com/BlackGlory/justypes/issues
- npm.io page: https://npm.io/package/justypes

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## Recent versions

- 4.5.0 (latest) — 2026-02-15
- 4.4.1 — 2024-10-30
- 4.4.0 — 2024-10-30
- 4.3.0 — 2024-09-02
- 4.2.1 — 2023-06-11
- 4.2.0 — 2023-03-10
- 4.1.0 — 2023-01-02
- 4.0.0 — 2022-12-19
- 3.1.2 — 2022-11-24
- 3.1.1 — 2022-11-24
- 3.1.0 — 2022-11-24
- 3.0.0 — 2022-09-13
- 2.3.0 — 2022-09-13
- 2.2.0 — 2022-08-20
- 2.1.0 — 2022-08-16
- … 11 more at https://npm.io/package/justypes/versions

## README

# justypes
Dumb types for TypeScript in the real world.

`justypes` contains these types:
- A new type is an interface.
- A new type is a collection of types.
- A new type is a mapping of type A to type B.

## Install
```sh
npm install --save justypes
# or
yarn add justypes
```

## Types
- Arrayable
- Awaitable
- Cons
- Constructor
- Dictionary
- EmptyObject
- FixedLengthArray
- Matrix
- Falsy
- Getter
- JSONValue
- JSONObject
- JSONSerializable
- NonEmptyArray
- Nullish
- TypedArray
- TypedArrayConstructor
- SignedTypedArray
- SignedTypedArrayConsturctor
- UnsignedTypedArray
- UnsignedTypedArrayConstructor
- TypedArrayOfConstructor
- ConstructorOfTypedArray

---
_Source: https://npm.io/package/justypes · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._