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denoland-deno/ext/fetch/lib.deno_fetch.d.ts

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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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// deno-lint-ignore-file no-explicit-any no-var
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/// <reference no-default-lib="true" />
/// <reference lib="esnext" />
/** @category Platform */
declare interface DomIterable<K, V> {
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keys(): IterableIterator<K>;
values(): IterableIterator<V>;
entries(): IterableIterator<[K, V]>;
[Symbol.iterator](): IterableIterator<[K, V]>;
forEach(
callback: (value: V, key: K, parent: this) => void,
thisArg?: any,
): void;
}
/** @category Fetch */
declare type FormDataEntryValue = File | string;
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/** Provides a way to easily construct a set of key/value pairs representing
* form fields and their values, which can then be easily sent using the
* XMLHttpRequest.send() method. It uses the same format a form would use if the
* encoding type were set to "multipart/form-data".
*
* @category Fetch
*/
declare interface FormData extends DomIterable<string, FormDataEntryValue> {
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append(name: string, value: string | Blob, fileName?: string): void;
delete(name: string): void;
get(name: string): FormDataEntryValue | null;
getAll(name: string): FormDataEntryValue[];
has(name: string): boolean;
set(name: string, value: string | Blob, fileName?: string): void;
}
/** @category Fetch */
declare var FormData: {
readonly prototype: FormData;
new (): FormData;
};
/** @category Fetch */
declare interface Body {
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/** A simple getter used to expose a `ReadableStream` of the body contents. */
readonly body: ReadableStream<Uint8Array> | null;
/** Stores a `Boolean` that declares whether the body has been used in a
* response yet.
*/
readonly bodyUsed: boolean;
/** Takes a `Response` stream and reads it to completion. It returns a promise
* that resolves with an `ArrayBuffer`.
*/
arrayBuffer(): Promise<ArrayBuffer>;
/** Takes a `Response` stream and reads it to completion. It returns a promise
* that resolves with a `Blob`.
*/
blob(): Promise<Blob>;
/** Takes a `Response` stream and reads it to completion. It returns a promise
* that resolves with a `Uint8Array`.
*/
bytes(): Promise<Uint8Array>;
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/** Takes a `Response` stream and reads it to completion. It returns a promise
* that resolves with a `FormData` object.
*/
formData(): Promise<FormData>;
/** Takes a `Response` stream and reads it to completion. It returns a promise
* that resolves with the result of parsing the body text as JSON.
*/
json(): Promise<any>;
/** Takes a `Response` stream and reads it to completion. It returns a promise
* that resolves with a `USVString` (text).
*/
text(): Promise<string>;
}
/** @category Fetch */
declare type HeadersInit = Iterable<string[]> | Record<string, string>;
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/** This Fetch API interface allows you to perform various actions on HTTP
* request and response headers. These actions include retrieving, setting,
* adding to, and removing. A Headers object has an associated header list,
* which is initially empty and consists of zero or more name and value pairs.
* You can add to this using methods like append() (see Examples). In all
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* methods of this interface, header names are matched by case-insensitive byte
* sequence.
*
* @category Fetch
*/
declare interface Headers extends DomIterable<string, string> {
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/** Appends a new value onto an existing header inside a `Headers` object, or
* adds the header if it does not already exist.
*/
append(name: string, value: string): void;
/** Deletes a header from a `Headers` object. */
delete(name: string): void;
/** Returns a `ByteString` sequence of all the values of a header within a
* `Headers` object with a given name.
*/
get(name: string): string | null;
/** Returns a boolean stating whether a `Headers` object contains a certain
* header.
*/
has(name: string): boolean;
/** Sets a new value for an existing header inside a Headers object, or adds
* the header if it does not already exist.
*/
set(name: string, value: string): void;
/** Returns an array containing the values of all `Set-Cookie` headers
* associated with a response.
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*/
getSetCookie(): string[];
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}
/** This Fetch API interface allows you to perform various actions on HTTP
* request and response headers. These actions include retrieving, setting,
* adding to, and removing. A Headers object has an associated header list,
* which is initially empty and consists of zero or more name and value pairs.
* You can add to this using methods like append() (see Examples). In all
* methods of this interface, header names are matched by case-insensitive byte
* sequence.
*
* @category Fetch
*/
declare var Headers: {
readonly prototype: Headers;
new (init?: HeadersInit): Headers;
};
/** @category Fetch */
declare type RequestInfo = Request | string;
/** @category Fetch */
declare type RequestCache =
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| "default"
| "force-cache"
| "no-cache"
| "no-store"
| "only-if-cached"
| "reload";
/** @category Fetch */
declare type RequestCredentials = "include" | "omit" | "same-origin";
/** @category Fetch */
declare type RequestMode = "cors" | "navigate" | "no-cors" | "same-origin";
/** @category Fetch */
declare type RequestRedirect = "error" | "follow" | "manual";
/** @category Fetch */
declare type ReferrerPolicy =
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| ""
| "no-referrer"
| "no-referrer-when-downgrade"
| "origin"
| "origin-when-cross-origin"
| "same-origin"
| "strict-origin"
| "strict-origin-when-cross-origin"
| "unsafe-url";
/** @category Fetch */
declare type BodyInit =
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| Blob
| BufferSource
| FormData
| URLSearchParams
| ReadableStream<Uint8Array>
| string;
/** @category Fetch */
declare type RequestDestination =
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| ""
| "audio"
| "audioworklet"
| "document"
| "embed"
| "font"
| "image"
| "manifest"
| "object"
| "paintworklet"
| "report"
| "script"
| "sharedworker"
| "style"
| "track"
| "video"
| "worker"
| "xslt";
/** @category Fetch */
declare interface RequestInit {
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/**
* A BodyInit object or null to set request's body.
*/
body?: BodyInit | null;
/**
* A string indicating how the request will interact with the browser's cache
* to set request's cache.
*/
cache?: RequestCache;
/**
* A string indicating whether credentials will be sent with the request
* always, never, or only when sent to a same-origin URL. Sets request's
* credentials.
*/
credentials?: RequestCredentials;
/**
* A Headers object, an object literal, or an array of two-item arrays to set
* request's headers.
*/
headers?: HeadersInit;
/**
* A cryptographic hash of the resource to be fetched by request. Sets
* request's integrity.
*/
integrity?: string;
/**
* A boolean to set request's keepalive.
*/
keepalive?: boolean;
/**
* A string to set request's method.
*/
method?: string;
/**
* A string to indicate whether the request will use CORS, or will be
* restricted to same-origin URLs. Sets request's mode.
*/
mode?: RequestMode;
/**
* A string indicating whether request follows redirects, results in an error
* upon encountering a redirect, or returns the redirect (in an opaque
* fashion). Sets request's redirect.
*/
redirect?: RequestRedirect;
/**
* A string whose value is a same-origin URL, "about:client", or the empty
* string, to set request's referrer.
*/
referrer?: string;
/**
* A referrer policy to set request's referrerPolicy.
*/
referrerPolicy?: ReferrerPolicy;
/**
* An AbortSignal to set request's signal.
*/
signal?: AbortSignal | null;
/**
* Can only be null. Used to disassociate request from any Window.
*/
window?: any;
}
/** This Fetch API interface represents a resource request.
*
* @category Fetch
*/
declare interface Request extends Body {
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/**
* Returns the cache mode associated with request, which is a string
* indicating how the request will interact with the browser's cache when
* fetching.
*/
readonly cache: RequestCache;
/**
* Returns the credentials mode associated with request, which is a string
* indicating whether credentials will be sent with the request always, never,
* or only when sent to a same-origin URL.
*/
readonly credentials: RequestCredentials;
/**
* Returns the kind of resource requested by request, e.g., "document" or "script".
*/
readonly destination: RequestDestination;
/**
* Returns a Headers object consisting of the headers associated with request.
* Note that headers added in the network layer by the user agent will not be
* accounted for in this object, e.g., the "Host" header.
*/
readonly headers: Headers;
/**
* Returns request's subresource integrity metadata, which is a cryptographic
* hash of the resource being fetched. Its value consists of multiple hashes
* separated by whitespace. [SRI]
*/
readonly integrity: string;
/**
* Returns a boolean indicating whether or not request is for a history
* navigation (a.k.a. back-forward navigation).
*/
readonly isHistoryNavigation: boolean;
/**
* Returns a boolean indicating whether or not request is for a reload
* navigation.
*/
readonly isReloadNavigation: boolean;
/**
* Returns a boolean indicating whether or not request can outlive the global
* in which it was created.
*/
readonly keepalive: boolean;
/**
* Returns request's HTTP method, which is "GET" by default.
*/
readonly method: string;
/**
* Returns the mode associated with request, which is a string indicating
* whether the request will use CORS, or will be restricted to same-origin
* URLs.
*/
readonly mode: RequestMode;
/**
* Returns the redirect mode associated with request, which is a string
* indicating how redirects for the request will be handled during fetching. A
* request will follow redirects by default.
*/
readonly redirect: RequestRedirect;
/**
* Returns the referrer of request. Its value can be a same-origin URL if
* explicitly set in init, the empty string to indicate no referrer, and
* "about:client" when defaulting to the global's default. This is used during
* fetching to determine the value of the `Referer` header of the request
* being made.
*/
readonly referrer: string;
/**
* Returns the referrer policy associated with request. This is used during
* fetching to compute the value of the request's referrer.
*/
readonly referrerPolicy: ReferrerPolicy;
/**
* Returns the signal associated with request, which is an AbortSignal object
* indicating whether or not request has been aborted, and its abort event
* handler.
*/
readonly signal: AbortSignal;
/**
* Returns the URL of request as a string.
*/
readonly url: string;
clone(): Request;
}
/** This Fetch API interface represents a resource request.
*
* @category Fetch
*/
declare var Request: {
readonly prototype: Request;
new (input: RequestInfo | URL, init?: RequestInit): Request;
};
/** @category Fetch */
declare interface ResponseInit {
headers?: HeadersInit;
status?: number;
statusText?: string;
}
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/** @category Fetch */
declare type ResponseType =
| "basic"
| "cors"
| "default"
| "error"
| "opaque"
| "opaqueredirect";
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/** This Fetch API interface represents the response to a request.
*
* @category Fetch
*/
declare interface Response extends Body {
readonly headers: Headers;
readonly ok: boolean;
readonly redirected: boolean;
readonly status: number;
readonly statusText: string;
readonly type: ResponseType;
readonly url: string;
clone(): Response;
}
/** This Fetch API interface represents the response to a request.
*
* @category Fetch
*/
declare var Response: {
readonly prototype: Response;
new (body?: BodyInit | null, init?: ResponseInit): Response;
json(data: unknown, init?: ResponseInit): Response;
error(): Response;
redirect(url: string | URL, status?: number): Response;
};
/** Fetch a resource from the network. It returns a `Promise` that resolves to the
* `Response` to that `Request`, whether it is successful or not.
*
* ```ts
* const response = await fetch("http://my.json.host/data.json");
* console.log(response.status); // e.g. 200
* console.log(response.statusText); // e.g. "OK"
* const jsonData = await response.json();
* ```
*
* @tags allow-net, allow-read
* @category Fetch
*/
declare function fetch(
input: URL | Request | string,
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init?: RequestInit,
): Promise<Response>;
/**
* @category Fetch
*/
declare interface EventSourceInit {
withCredentials?: boolean;
}
/**
* @category Fetch
*/
declare interface EventSourceEventMap {
"error": Event;
"message": MessageEvent;
"open": Event;
}
/**
* @category Fetch
*/
declare interface EventSource extends EventTarget {
onerror: ((this: EventSource, ev: Event) => any) | null;
onmessage: ((this: EventSource, ev: MessageEvent) => any) | null;
onopen: ((this: EventSource, ev: Event) => any) | null;
/**
* Returns the state of this EventSource object's connection. It can have the values described below.
*/
readonly readyState: number;
/**
* Returns the URL providing the event stream.
*/
readonly url: string;
/**
* Returns true if the credentials mode for connection requests to the URL providing the event stream is set to "include", and false otherwise.
*/
readonly withCredentials: boolean;
/**
* Aborts any instances of the fetch algorithm started for this EventSource object, and sets the readyState attribute to CLOSED.
*/
close(): void;
readonly CONNECTING: 0;
readonly OPEN: 1;
readonly CLOSED: 2;
addEventListener<K extends keyof EventSourceEventMap>(
type: K,
listener: (this: EventSource, ev: EventSourceEventMap[K]) => any,
options?: boolean | AddEventListenerOptions,
): void;
addEventListener(
type: string,
listener: (this: EventSource, event: MessageEvent) => any,
options?: boolean | AddEventListenerOptions,
): void;
addEventListener(
type: string,
listener: EventListenerOrEventListenerObject,
options?: boolean | AddEventListenerOptions,
): void;
removeEventListener<K extends keyof EventSourceEventMap>(
type: K,
listener: (this: EventSource, ev: EventSourceEventMap[K]) => any,
options?: boolean | EventListenerOptions,
): void;
removeEventListener(
type: string,
listener: (this: EventSource, event: MessageEvent) => any,
options?: boolean | EventListenerOptions,
): void;
removeEventListener(
type: string,
listener: EventListenerOrEventListenerObject,
options?: boolean | EventListenerOptions,
): void;
}
/**
* @category Fetch
*/
declare var EventSource: {
prototype: EventSource;
new (url: string | URL, eventSourceInitDict?: EventSourceInit): EventSource;
readonly CONNECTING: 0;
readonly OPEN: 1;
readonly CLOSED: 2;
};