# expo-structured-headers

> Expo module implementation of a parser based on https://httpwg.org/specs/rfc8941.html

Latest version **57.0.1** (published 2026-09-11) · MIT license · 0 weekly downloads

## Install

```sh
npm install expo-structured-headers
pnpm add expo-structured-headers
yarn add expo-structured-headers
bun add expo-structured-headers
```

## Health

**Score 65/100 (B)** — status: active.

Positive: no vulnerabilities; recently updated; high maintenance score; popular repo; extremely popular.

Warnings: low downloads; no types; no esm support.

## Facts

| | |
|---|---|
| Version | 57.0.1 |
| Published | 2026-09-11 |
| First published | 2021-03-10 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | none |
| Module format | CommonJS |
| Dependencies | 0 |
| Unpacked size | 102.1 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 52355 |
| Author | 650 Industries, Inc. |
| Maintainers | ide, brentvatne, expoadmin, exponent, bycedric, kudochien, alanhughes, tsapeta, expo-bot, philpl, ccheever, wschurman |
| Keywords | react-native, expo, expo-structured-headers |

## Links

- npm: https://www.npmjs.com/package/expo-structured-headers
- Repository: https://github.com/expo/expo
- Homepage: https://github.com/expo/expo/tree/main/packages/expo-structured-headers
- Issues: https://github.com/expo/expo/issues
- npm.io page: https://npm.io/package/expo-structured-headers

## Recent versions

- 57.0.1 (latest) — 2026-09-11
- 58.0.0 (next) — 2026-09-10
- 58.0.0-canary-20260909-ea7a89a (canary) — 2026-09-09
- 56.0.1-canary-20260701-9100865 (canary-sdk-56) — 2026-07-01
- 55.0.1-canary-20260429-a5e59cf (canary-sdk-55) — 2026-04-29
- 3.8.0 (sdk-51) — 2024-04-18
- 3.7.2 (sdk-50) — 2024-01-18
- 58.0.0-canary-20260908-e343e6e — 2026-09-08
- 58.0.0-canary-20260902-26df09e — 2026-09-02
- 58.0.0-canary-20260901-2164f24 — 2026-09-02
- 58.0.0-canary-20260812-27f94d4 — 2026-08-12
- 58.0.0-canary-20260806-8c2d007 — 2026-08-06
- 57.0.0-canary-20260723-64edab9 — 2026-07-23
- 57.0.0-canary-20260720-b6d63bc — 2026-07-20
- 57.0.0-canary-20260718-7cbcda5 — 2026-07-18
- … 179 more at https://npm.io/package/expo-structured-headers/versions

## README

# expo-structured-headers

Java and Objective-C (partial) implementations of https://httpwg.org/specs/rfc8941.html.

The Objective-C implementation only includes the parsing component and does not include serialization. It also ignores ordering of dictionaries.

The Java implementation is a derivative of https://github.com/reschke/structured-fields, modified for Android API level 21 compatibility and with the package name in each source file changed.

## API documentation

## Installation in managed Expo projects

## Installation in bare React Native projects

## 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-structured-headers · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._