HandlerExtensionBuilder

Extensions that add a callable signature to the client.

IMPORTANT

Always use the satifies operator to validate your extension, which preserves the resulting extension type.

Type Definition

// Internal use only
type Fn<T = any> = (...args: any[]) => T
type HandlerExtension = Fn

// Use this type to create extensions
type HandlerExtensionBuilder = (client: ApiClient) => HandlerExtension

Example

import type { HandlerExtensionBuilder } from 'apiful'
import { createClient } from 'apiful'
import { ofetch } from 'ofetch'

const callableExtension = (
  client => ofetch.create(client.defaultOptions)
) satisfies HandlerExtensionBuilder

const client = createClient()
  .with(callableExtension)