---
title: "FetchFunction"
summary: "@slack/webhook / FetchFunction"
url: "https://docs.slack.dev/tools/node-slack-sdk/reference/webhook/type-aliases/FetchFunction"
type: "guide"
---

Source: https://docs.slack.dev/tools/node-slack-sdk/reference/webhook/type-aliases/FetchFunction

[@slack/webhook](https://docs.slack.dev/tools/node-slack-sdk/reference/webhook.md) / FetchFunction

# Type Alias: FetchFunction

```
type FetchFunction = (url, init?) => Promise<FetchResponse>;
```

Defined in: [packages/webhook/src/IncomingWebhook.ts:32](https://github.com/slackapi/node-slack-sdk/blob/main/packages/webhook/src/IncomingWebhook.ts#L32)

## Parameters {#parameters}

### url {#url}

`string` | `URL`

### init? {#init}

`FetchRequestInit`

## Returns {#returns}

`Promise`<`FetchResponse`\>