# Function: exportJWK()

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▸ **exportJWK**(`key`): [`Promise`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)\<[`JWK`](../../../types/interfaces/JWK.md)\>

Exports a [CryptoKey](https://developer.mozilla.org/docs/Web/API/CryptoKey), [KeyObject](https://nodejs.org/api/crypto.html#class-keyobject), or [Uint8Array](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array) to a JWK.

This function is exported (as a named export) from the main `'jose'` module entry point as well
as from its subpath export `'jose/key/export'`.

## Parameters

| Parameter | Type | Description |
| ------ | ------ | ------ |
| `key` | [`Uint8Array`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array) \| [`CryptoKey`](https://developer.mozilla.org/docs/Web/API/CryptoKey) \| [`KeyObject`](../../../types/interfaces/KeyObject.md) | Key to export as JWK. |

## Returns

[`Promise`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)\<[`JWK`](../../../types/interfaces/JWK.md)\>

## Example

```js
const privateJwk = await jose.exportJWK(privateKey)
const publicJwk = await jose.exportJWK(publicKey)

console.log(privateJwk)
console.log(publicJwk)
```