Use of Fetch

By default, @kubb/plugin-client uses the import client from @kubb/plugin-client/client as its client, which is based on the Axios instance interface for making API calls.

However, there are cases where you might want to customize the client. For example, you might prefer to use Fetch or Ky.

Create a kubb.config.ts with the following config

importPath can be a relative, import alias, or an import to another library(default @kubb/plugin-client/client will be used).

See plugins/plugin-client.

import { defineConfig } from '@kubb/core'
import { pluginClient } from '@kubb/plugin-client'
import { pluginOas } from '@kubb/plugin-oas'
import { pluginTs } from '@kubb/plugin-ts'

export default defineConfig(() => {
  return {
    root: '.',
    input: {
      path: './petStore.yaml',
    },
    output: {
      path: './src/gen',
      clean: true,
    },
    plugins: [
      pluginOas({
        validate: false,
        generators: [],
      }),
      pluginTs({
        output: { path: 'models.ts' },
      }),
      pluginClient({
        output: {
          path: '.',
        },
        importPath: '../client.ts',
      }),
    ],
  }
})

Add client.ts with the following config

In the background, every POST, PUT, GET, PATCH, and DELETE request will utilize the importPath and invoke the default export of that file with a configuration shaped by RequestConfig, which is modeled after the AxiosRequest interface/config.

export type RequestConfig<TData = unknown> = {
  url?: string
  method: 'get' | 'put' | 'patch' | 'post' | 'delete'
  params?: object
  data?: TData | FormData
  responseType?: 'arraybuffer' | 'blob' | 'document' | 'json' | 'text' | 'stream'
  signal?: AbortSignal
  headers?: HeadersInit
}

export type ResponseConfig<TData = unknown> = {
  data: TData
  status: number
  statusText: string
}

export const fetchClient = async <TData, TError = unknown, TVariables = unknown>(config: RequestConfig<TVariables>): Promise<ResponseConfig<TData>> => {
  const response = await fetch('https://example.org/post', {
    method: config.method.toUpperCase(),
    body: JSON.stringify(config.data),
    signal: config.signal,
    headers: config.headers,
  })

  const data = await response.json()

  return {
    data,
    status: response.status,
    statusText: response.statusText,
  }
}

export default fetchClient

View the generated code

import client from '../client.ts'
import type { ResponseConfig } from '../client.ts'
import type { GetPetByIdQueryResponse, GetPetByIdPathParams } from './models.ts'

/**
 * @description Returns a single pet
 * @summary Find pet by ID
 * @link /pet/:petId
 */
export async function getPetById(
  petId: GetPetByIdPathParams['petId'],
  options: Partial<Parameters<typeof client>[0]> = {},
): Promise<ResponseConfig<GetPetByIdQueryResponse>['data']> {
  const res = await client<GetPetByIdQueryResponse>({ method: 'get', url: `/pet/${petId}`, ...options })
  return res.data
}

Example