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

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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
/* eslint-disable @typescript-eslint/no-unused-vars, @typescript-eslint/no-explicit-any, no-var */
/// <reference no-default-lib="true" />
/// <reference lib="esnext" />
interface DomIterable<K, V> {
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;
}
interface ReadableStreamReadDoneResult<T> {
done: true;
value?: T;
}
interface ReadableStreamReadValueResult<T> {
done: false;
value: T;
}
type ReadableStreamReadResult<T> =
| ReadableStreamReadValueResult<T>
| ReadableStreamReadDoneResult<T>;
interface ReadableStreamDefaultReader<R = any> {
readonly closed: Promise<void>;
cancel(reason?: any): Promise<void>;
read(): Promise<ReadableStreamReadResult<R>>;
releaseLock(): void;
}
interface ReadableStreamReader<R = any> {
cancel(): Promise<void>;
read(): Promise<ReadableStreamReadResult<R>>;
releaseLock(): void;
}
interface ReadableByteStreamControllerCallback {
(controller: ReadableByteStreamController): void | PromiseLike<void>;
}
interface UnderlyingByteSource {
autoAllocateChunkSize?: number;
cancel?: ReadableStreamErrorCallback;
pull?: ReadableByteStreamControllerCallback;
start?: ReadableByteStreamControllerCallback;
type: "bytes";
}
interface UnderlyingSource<R = any> {
cancel?: ReadableStreamErrorCallback;
pull?: ReadableStreamDefaultControllerCallback<R>;
start?: ReadableStreamDefaultControllerCallback<R>;
type?: undefined;
}
interface ReadableStreamErrorCallback {
(reason: any): void | PromiseLike<void>;
}
interface ReadableStreamDefaultControllerCallback<R> {
(controller: ReadableStreamDefaultController<R>): void | PromiseLike<void>;
}
interface ReadableStreamDefaultController<R = any> {
readonly desiredSize: number | null;
close(): void;
enqueue(chunk: R): void;
error(error?: any): void;
}
interface ReadableByteStreamController {
readonly byobRequest: undefined;
readonly desiredSize: number | null;
close(): void;
enqueue(chunk: ArrayBufferView): void;
error(error?: any): void;
}
interface PipeOptions {
preventAbort?: boolean;
preventCancel?: boolean;
preventClose?: boolean;
signal?: AbortSignal;
}
interface QueuingStrategySizeCallback<T = any> {
(chunk: T): number;
}
interface QueuingStrategy<T = any> {
highWaterMark?: number;
size?: QueuingStrategySizeCallback<T>;
}
/** This Streams API interface provides a built-in byte length queuing strategy
* that can be used when constructing streams. */
declare class CountQueuingStrategy implements QueuingStrategy {
constructor(options: { highWaterMark: number });
highWaterMark: number;
size(chunk: any): 1;
}
declare class ByteLengthQueuingStrategy
implements QueuingStrategy<ArrayBufferView> {
constructor(options: { highWaterMark: number });
highWaterMark: number;
size(chunk: ArrayBufferView): number;
}
/** This Streams API interface represents a readable stream of byte data. The
* Fetch API offers a concrete instance of a ReadableStream through the body
* property of a Response object. */
interface ReadableStream<R = any> {
readonly locked: boolean;
cancel(reason?: any): Promise<void>;
getIterator(options?: { preventCancel?: boolean }): AsyncIterableIterator<R>;
// getReader(options: { mode: "byob" }): ReadableStreamBYOBReader;
getReader(): ReadableStreamDefaultReader<R>;
pipeThrough<T>(
{
writable,
readable,
}: {
writable: WritableStream<R>;
readable: ReadableStream<T>;
},
options?: PipeOptions,
): ReadableStream<T>;
pipeTo(dest: WritableStream<R>, options?: PipeOptions): Promise<void>;
tee(): [ReadableStream<R>, ReadableStream<R>];
[Symbol.asyncIterator](options?: {
preventCancel?: boolean;
}): AsyncIterableIterator<R>;
}
declare var ReadableStream: {
prototype: ReadableStream;
new (
underlyingSource: UnderlyingByteSource,
strategy?: { highWaterMark?: number; size?: undefined },
): ReadableStream<Uint8Array>;
new <R = any>(
underlyingSource?: UnderlyingSource<R>,
strategy?: QueuingStrategy<R>,
): ReadableStream<R>;
};
interface WritableStreamDefaultControllerCloseCallback {
(): void | PromiseLike<void>;
}
interface WritableStreamDefaultControllerStartCallback {
(controller: WritableStreamDefaultController): void | PromiseLike<void>;
}
interface WritableStreamDefaultControllerWriteCallback<W> {
(chunk: W, controller: WritableStreamDefaultController):
| void
| PromiseLike<
void
>;
}
interface WritableStreamErrorCallback {
(reason: any): void | PromiseLike<void>;
}
interface UnderlyingSink<W = any> {
abort?: WritableStreamErrorCallback;
close?: WritableStreamDefaultControllerCloseCallback;
start?: WritableStreamDefaultControllerStartCallback;
type?: undefined;
write?: WritableStreamDefaultControllerWriteCallback<W>;
}
/** This Streams API interface provides a standard abstraction for writing
* streaming data to a destination, known as a sink. This object comes with
* built-in backpressure and queuing. */
declare class WritableStream<W = any> {
constructor(
underlyingSink?: UnderlyingSink<W>,
strategy?: QueuingStrategy<W>,
);
readonly locked: boolean;
abort(reason?: any): Promise<void>;
close(): Promise<void>;
getWriter(): WritableStreamDefaultWriter<W>;
}
/** This Streams API interface represents a controller allowing control of a
* WritableStream's state. When constructing a WritableStream, the underlying
* sink is given a corresponding WritableStreamDefaultController instance to
* manipulate. */
interface WritableStreamDefaultController {
error(error?: any): void;
}
/** This Streams API interface is the object returned by
* WritableStream.getWriter() and once created locks the < writer to the
* WritableStream ensuring that no other streams can write to the underlying
* sink. */
interface WritableStreamDefaultWriter<W = any> {
readonly closed: Promise<void>;
readonly desiredSize: number | null;
readonly ready: Promise<void>;
abort(reason?: any): Promise<void>;
close(): Promise<void>;
releaseLock(): void;
write(chunk: W): Promise<void>;
}
declare class TransformStream<I = any, O = any> {
constructor(
transformer?: Transformer<I, O>,
writableStrategy?: QueuingStrategy<I>,
readableStrategy?: QueuingStrategy<O>,
);
readonly readable: ReadableStream<O>;
readonly writable: WritableStream<I>;
}
interface TransformStreamDefaultController<O = any> {
readonly desiredSize: number | null;
enqueue(chunk: O): void;
error(reason?: any): void;
terminate(): void;
}
interface Transformer<I = any, O = any> {
flush?: TransformStreamDefaultControllerCallback<O>;
readableType?: undefined;
start?: TransformStreamDefaultControllerCallback<O>;
transform?: TransformStreamDefaultControllerTransformCallback<I, O>;
writableType?: undefined;
}
interface TransformStreamDefaultControllerCallback<O> {
(controller: TransformStreamDefaultController<O>): void | PromiseLike<void>;
}
interface TransformStreamDefaultControllerTransformCallback<I, O> {
(
chunk: I,
controller: TransformStreamDefaultController<O>,
): void | PromiseLike<void>;
}
type BlobPart = BufferSource | Blob | string;
interface BlobPropertyBag {
type?: string;
ending?: "transparent" | "native";
}
/** A file-like object of immutable, raw data. Blobs represent data that isn't necessarily in a JavaScript-native format. The File interface is based on Blob, inheriting blob functionality and expanding it to support files on the user's system. */
declare class Blob {
constructor(blobParts?: BlobPart[], options?: BlobPropertyBag);
readonly size: number;
readonly type: string;
arrayBuffer(): Promise<ArrayBuffer>;
slice(start?: number, end?: number, contentType?: string): Blob;
stream(): ReadableStream;
text(): Promise<string>;
}
interface FilePropertyBag extends BlobPropertyBag {
lastModified?: number;
}
/** Provides information about files and allows JavaScript in a web page to
* access their content. */
declare class File extends Blob {
constructor(
fileBits: BlobPart[],
fileName: string,
options?: FilePropertyBag,
);
readonly lastModified: number;
readonly name: string;
}
type FormDataEntryValue = File | string;
/** 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". */
declare class FormData implements DomIterable<string, FormDataEntryValue> {
// TODO(ry) FormData constructor is non-standard.
// new(form?: HTMLFormElement): FormData;
constructor();
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;
keys(): IterableIterator<string>;
values(): IterableIterator<string>;
entries(): IterableIterator<[string, FormDataEntryValue]>;
[Symbol.iterator](): IterableIterator<[string, FormDataEntryValue]>;
forEach(
callback: (value: FormDataEntryValue, key: string, parent: this) => void,
thisArg?: any,
): void;
}
interface Body {
/** 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 `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>;
}
type HeadersInit = Headers | string[][] | Record<string, string>;
/** 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. */
interface Headers {
append(name: string, value: string): void;
delete(name: string): void;
get(name: string): string | null;
has(name: string): boolean;
set(name: string, value: string): void;
forEach(
callbackfn: (value: string, key: string, parent: Headers) => void,
thisArg?: any,
): void;
}
declare class Headers implements DomIterable<string, string> {
constructor(init?: HeadersInit);
/** 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 an iterator allowing to go through all key/value pairs
* contained in this Headers object. The both the key and value of each pairs
* are ByteString objects.
*/
entries(): IterableIterator<[string, string]>;
/** 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;
/** Returns an iterator allowing to go through all keys contained in
* this Headers object. The keys are ByteString objects.
*/
keys(): IterableIterator<string>;
/** 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 iterator allowing to go through all values contained in
* this Headers object. The values are ByteString objects.
*/
values(): IterableIterator<string>;
forEach(
callbackfn: (value: string, key: string, parent: this) => void,
thisArg?: any,
): void;
/** The Symbol.iterator well-known symbol specifies the default
* iterator for this Headers object
*/
[Symbol.iterator](): IterableIterator<[string, string]>;
}
type RequestInfo = Request | string;
type RequestCache =
| "default"
| "force-cache"
| "no-cache"
| "no-store"
| "only-if-cached"
| "reload";
type RequestCredentials = "include" | "omit" | "same-origin";
type RequestMode = "cors" | "navigate" | "no-cors" | "same-origin";
type RequestRedirect = "error" | "follow" | "manual";
type ReferrerPolicy =
| ""
| "no-referrer"
| "no-referrer-when-downgrade"
| "origin"
| "origin-when-cross-origin"
| "same-origin"
| "strict-origin"
| "strict-origin-when-cross-origin"
| "unsafe-url";
type BodyInit =
| Blob
| BufferSource
| FormData
| URLSearchParams
| ReadableStream<Uint8Array>
| string;
type RequestDestination =
| ""
| "audio"
| "audioworklet"
| "document"
| "embed"
| "font"
| "image"
| "manifest"
| "object"
| "paintworklet"
| "report"
| "script"
| "sharedworker"
| "style"
| "track"
| "video"
| "worker"
| "xslt";
interface RequestInit {
/**
* 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. */
declare class Request implements Body {
constructor(input: RequestInfo, init?: RequestInit);
/**
* 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;
/** 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 `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>;
}
interface ResponseInit {
headers?: HeadersInit;
status?: number;
statusText?: string;
}
type ResponseType =
| "basic"
| "cors"
| "default"
| "error"
| "opaque"
| "opaqueredirect";
/** This Fetch API interface represents the response to a request. */
declare class Response implements Body {
constructor(body?: BodyInit | null, init?: ResponseInit);
static error(): Response;
static redirect(url: string, status?: number): Response;
readonly headers: Headers;
readonly ok: boolean;
readonly redirected: boolean;
readonly status: number;
readonly statusText: string;
readonly trailer: Promise<Headers>;
readonly type: ResponseType;
readonly url: string;
clone(): Response;
/** 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 `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>;
}
/** Fetch a resource from the network. It returns a Promise that resolves to the
* Response to that request, whether it is successful or not.
*
* 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();
*/
declare function fetch(
input: Request | URL | string,
init?: RequestInit,
): Promise<Response>;