1 | import type { BaseQueryFn } from './baseQueryTypes';
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2 | import type { MaybePromise, Override } from './tsHelpers';
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3 | export declare type ResponseHandler = 'json' | 'text' | ((response: Response) => Promise<any>);
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4 | declare type CustomRequestInit = Override<RequestInit, {
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5 | headers?: Headers | string[][] | Record<string, string | undefined> | undefined;
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6 | }>;
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7 | export interface FetchArgs extends CustomRequestInit {
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8 | url: string;
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9 | params?: Record<string, any>;
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10 | body?: any;
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11 | responseHandler?: ResponseHandler;
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12 | validateStatus?: (response: Response, body: any) => boolean;
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13 | }
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14 | export declare type FetchBaseQueryError = {
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15 | /**
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16 | * * `number`:
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17 | * HTTP status code
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18 | */
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19 | status: number;
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20 | data: unknown;
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21 | } | {
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22 | /**
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23 | * * `"FETCH_ERROR"`:
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24 | * An error that occured during execution of `fetch` or the `fetchFn` callback option
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25 | **/
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26 | status: 'FETCH_ERROR';
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27 | data?: undefined;
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28 | error: string;
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29 | } | {
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30 | /**
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31 | * * `"PARSING_ERROR"`:
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32 | * An error happened during parsing.
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33 | * Most likely a non-JSON-response was returned with the default `responseHandler` "JSON",
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34 | * or an error occured while executing a custom `responseHandler`.
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35 | **/
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36 | status: 'PARSING_ERROR';
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37 | originalStatus: number;
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38 | data: string;
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39 | error: string;
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40 | } | {
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41 | /**
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42 | * * `"CUSTOM_ERROR"`:
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43 | * A custom error type that you can return from your `fetchFn` where another error might not make sense.
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44 | **/
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45 | status: 'CUSTOM_ERROR';
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46 | data?: unknown;
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47 | error: string;
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48 | };
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49 | export declare type FetchBaseQueryArgs = {
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50 | baseUrl?: string;
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51 | prepareHeaders?: (headers: Headers, api: {
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52 | getState: () => unknown;
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53 | }) => MaybePromise<Headers>;
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54 | fetchFn?: (input: RequestInfo, init?: RequestInit | undefined) => Promise<Response>;
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55 | } & RequestInit;
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56 | export declare type FetchBaseQueryMeta = {
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57 | request: Request;
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58 | response?: Response;
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59 | };
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60 | /**
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61 | * This is a very small wrapper around fetch that aims to simplify requests.
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62 | *
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63 | * @example
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64 | * ```ts
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65 | * const baseQuery = fetchBaseQuery({
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66 | * baseUrl: 'https://api.your-really-great-app.com/v1/',
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67 | * prepareHeaders: (headers, { getState }) => {
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68 | * const token = (getState() as RootState).auth.token;
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69 | * // If we have a token set in state, let's assume that we should be passing it.
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70 | * if (token) {
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71 | * headers.set('authorization', `Bearer ${token}`);
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72 | * }
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73 | * return headers;
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74 | * },
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75 | * })
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76 | * ```
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77 | *
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78 | * @param {string} baseUrl
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79 | * The base URL for an API service.
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80 | * Typically in the format of http://example.com/
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81 | *
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82 | * @param {(headers: Headers, api: { getState: () => unknown }) => Headers} prepareHeaders
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83 | * An optional function that can be used to inject headers on requests.
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84 | * Provides a Headers object, as well as the `getState` function from the
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85 | * redux store. Can be useful for authentication.
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86 | *
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87 | * @link https://developer.mozilla.org/en-US/docs/Web/API/Headers
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88 | *
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89 | * @param {(input: RequestInfo, init?: RequestInit | undefined) => Promise<Response>} fetchFn
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90 | * Accepts a custom `fetch` function if you do not want to use the default on the window.
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91 | * Useful in SSR environments if you need to use a library such as `isomorphic-fetch` or `cross-fetch`
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92 | *
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93 | */
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94 | export declare function fetchBaseQuery({ baseUrl, prepareHeaders, fetchFn, ...baseFetchOptions }?: FetchBaseQueryArgs): BaseQueryFn<string | FetchArgs, unknown, FetchBaseQueryError, {}, FetchBaseQueryMeta>;
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95 | export {};
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