# expo-constants

> Provides system information that remains constant throughout the lifetime of your app.

Latest version **57.0.18** (published 2026-09-11) · MIT license · 0 weekly downloads

## Install

```sh
npm install expo-constants
pnpm add expo-constants
yarn add expo-constants
bun add expo-constants
```

## Health

**Score 80/100 (A)** — status: active.

Positive: has types; esm support; no vulnerabilities; recently updated; high maintenance score; high quality score; popular repo; extremely popular.

Warnings: low downloads.

## Facts

| | |
|---|---|
| Version | 57.0.18 |
| Published | 2026-09-11 |
| First published | 2018-07-06 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | bundled |
| Module format | ESM + CommonJS |
| Dependencies | 1 |
| Unpacked size | 133.3 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 52188 |
| Author | 650 Industries, Inc. |
| Maintainers | ide, brentvatne, expoadmin, exponent, bycedric, kudochien, alanhughes, tsapeta, expo-bot, philpl, ccheever, wschurman |
| Keywords | react-native, expo, constants |

## Links

- npm: https://www.npmjs.com/package/expo-constants
- Repository: https://github.com/expo/expo
- Homepage: https://docs.expo.dev/versions/latest/sdk/constants/
- Issues: https://github.com/expo/expo/issues
- npm.io page: https://npm.io/package/expo-constants

## Dependencies (1)

- [@expo/env](https://npm.io/package/@expo/env.md) ~2.4.3

## Recent versions

- 57.0.18 (latest) — 2026-09-11
- 58.0.1 (next) — 2026-09-14
- 58.0.0-canary-20260909-ea7a89a (canary) — 2026-09-09
- 56.0.25 (sdk-56) — 2026-08-28
- 18.0.14 (sdk-54) — 2026-08-17
- 55.0.17 (sdk-55) — 2026-07-15
- 56.0.17-canary-20260701-9100865 (canary-sdk-56) — 2026-07-01
- 55.0.8-canary-20260429-a5e59cf (canary-sdk-55) — 2026-04-29
- 17.1.8 (sdk-53) — 2025-12-11
- 16.0.1 (sdk-51) — 2024-04-23
- 15.4.5 (sdk-50) — 2024-01-18
- 58.0.0 — 2026-09-10
- 58.0.0-canary-20260902-26df09e — 2026-09-02
- 58.0.0-canary-20260901-2164f24 — 2026-09-02
- 57.0.17 — 2026-09-01
- … 328 more at https://npm.io/package/expo-constants/versions

## README

# expo-constants

Provides system information that remains constant throughout the lifetime of your app.

# API documentation

- [Documentation for the latest stable release](https://docs.expo.dev/versions/latest/sdk/constants/)
- [Documentation for the main branch](https://docs.expo.dev/versions/unversioned/sdk/constants/)

# Installation in managed Expo projects

For [managed](https://docs.expo.dev/archive/managed-vs-bare/) Expo projects, please follow the installation instructions in the [API documentation for the latest stable release](https://docs.expo.dev/versions/latest/sdk/constants/).

# Installation in bare React Native projects

For bare React Native projects, you must ensure that you have [installed and configured the `expo` package](https://docs.expo.dev/bare/installing-expo-modules/) before continuing.

### Add the package to your npm dependencies

```
npx expo install expo-constants
```

# Contributing

Contributions are very welcome! Please refer to guidelines described in the [contributing guide](https://github.com/expo/expo#contributing).

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