@arcjet/headers/README.md

Arcjet extension of the Headers class

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# `@arcjet/headers`

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[Arcjet][arcjet] extension of the Headers class.

- [npm package (`@arcjet/headers`)](https://www.npmjs.com/package/@arcjet/headers)
- [GitHub source code (`headers/` in `arcjet/arcjet-js`)](https://github.com/arcjet/arcjet-js/tree/main/headers)

## What is this?

This is an internal utility to help us deal with [`Headers`][mdn-headers].
This exists to prevent the `cookie` header from being set and non-string values
from being set.

## When should I use this?

You should not use this but use `Headers` or plain objects instead.
This package matches our current needs which are likely different from yours.

## Install

This package is ESM only.
Install with npm in Node.js:

```sh
npm install @arcjet/headers
```

## Use

```ts
import ArcjetHeaders from "@arcjet/headers";

const headers = new ArcjetHeaders({ abc: "123" });

console.log(headers.get("abc")); // => "123"
```

## License

[Apache License, Version 2.0][apache-license] © [Arcjet Labs, Inc.][arcjet]

[arcjet]: https://arcjet.com
[apache-license]: http://www.apache.org/licenses/LICENSE-2.0
[mdn-headers]: https://developer.mozilla.org/en-US/docs/Web/API/Headers