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denoland-deno/ext/web/lib.deno_web.d.ts

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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// deno-lint-ignore-file no-explicit-any no-var
/// <reference no-default-lib="true" />
/// <reference lib="esnext" />
/** @category Platform */
interface DOMException extends Error {
readonly name: string;
readonly message: string;
/** @deprecated */
readonly code: number;
readonly INDEX_SIZE_ERR: 1;
readonly DOMSTRING_SIZE_ERR: 2;
readonly HIERARCHY_REQUEST_ERR: 3;
readonly WRONG_DOCUMENT_ERR: 4;
readonly INVALID_CHARACTER_ERR: 5;
readonly NO_DATA_ALLOWED_ERR: 6;
readonly NO_MODIFICATION_ALLOWED_ERR: 7;
readonly NOT_FOUND_ERR: 8;
readonly NOT_SUPPORTED_ERR: 9;
readonly INUSE_ATTRIBUTE_ERR: 10;
readonly INVALID_STATE_ERR: 11;
readonly SYNTAX_ERR: 12;
readonly INVALID_MODIFICATION_ERR: 13;
readonly NAMESPACE_ERR: 14;
readonly INVALID_ACCESS_ERR: 15;
readonly VALIDATION_ERR: 16;
readonly TYPE_MISMATCH_ERR: 17;
readonly SECURITY_ERR: 18;
readonly NETWORK_ERR: 19;
readonly ABORT_ERR: 20;
readonly URL_MISMATCH_ERR: 21;
readonly QUOTA_EXCEEDED_ERR: 22;
readonly TIMEOUT_ERR: 23;
readonly INVALID_NODE_TYPE_ERR: 24;
readonly DATA_CLONE_ERR: 25;
}
/** @category Platform */
declare var DOMException: {
readonly prototype: DOMException;
new (message?: string, name?: string): DOMException;
readonly INDEX_SIZE_ERR: 1;
readonly DOMSTRING_SIZE_ERR: 2;
readonly HIERARCHY_REQUEST_ERR: 3;
readonly WRONG_DOCUMENT_ERR: 4;
readonly INVALID_CHARACTER_ERR: 5;
readonly NO_DATA_ALLOWED_ERR: 6;
readonly NO_MODIFICATION_ALLOWED_ERR: 7;
readonly NOT_FOUND_ERR: 8;
readonly NOT_SUPPORTED_ERR: 9;
readonly INUSE_ATTRIBUTE_ERR: 10;
readonly INVALID_STATE_ERR: 11;
readonly SYNTAX_ERR: 12;
readonly INVALID_MODIFICATION_ERR: 13;
readonly NAMESPACE_ERR: 14;
readonly INVALID_ACCESS_ERR: 15;
readonly VALIDATION_ERR: 16;
readonly TYPE_MISMATCH_ERR: 17;
readonly SECURITY_ERR: 18;
readonly NETWORK_ERR: 19;
readonly ABORT_ERR: 20;
readonly URL_MISMATCH_ERR: 21;
readonly QUOTA_EXCEEDED_ERR: 22;
readonly TIMEOUT_ERR: 23;
readonly INVALID_NODE_TYPE_ERR: 24;
readonly DATA_CLONE_ERR: 25;
};
/** @category Events */
interface EventInit {
bubbles?: boolean;
cancelable?: boolean;
composed?: boolean;
}
/** An event which takes place in the DOM.
*
* @category Events
*/
interface Event {
/** Returns true or false depending on how event was initialized. True if
* event goes through its target's ancestors in reverse tree order, and
* false otherwise. */
readonly bubbles: boolean;
/** @deprecated */
cancelBubble: boolean;
/** Returns true or false depending on how event was initialized. Its return
* value does not always carry meaning, but true can indicate that part of the
* operation during which event was dispatched, can be canceled by invoking
* the preventDefault() method. */
readonly cancelable: boolean;
/** Returns true or false depending on how event was initialized. True if
* event invokes listeners past a ShadowRoot node that is the root of its
* target, and false otherwise. */
readonly composed: boolean;
/** Returns the object whose event listener's callback is currently being
* invoked. */
readonly currentTarget: EventTarget | null;
/** Returns true if preventDefault() was invoked successfully to indicate
* cancellation, and false otherwise. */
readonly defaultPrevented: boolean;
/** Returns the event's phase, which is one of NONE, CAPTURING_PHASE,
* AT_TARGET, and BUBBLING_PHASE. */
readonly eventPhase: number;
/** Returns true if event was dispatched by the user agent, and false
* otherwise. */
readonly isTrusted: boolean;
/** @deprecated */
returnValue: boolean;
/** @deprecated */
readonly srcElement: EventTarget | null;
/** Returns the object to which event is dispatched (its target). */
readonly target: EventTarget | null;
/** Returns the event's timestamp as the number of milliseconds measured
* relative to the time origin. */
readonly timeStamp: number;
/** Returns the type of event, e.g. "click", "hashchange", or "submit". */
readonly type: string;
/** Returns the invocation target objects of event's path (objects on which
* listeners will be invoked), except for any nodes in shadow trees of which
* the shadow root's mode is "closed" that are not reachable from event's
* currentTarget. */
composedPath(): EventTarget[];
/** @deprecated */
initEvent(type: string, bubbles?: boolean, cancelable?: boolean): void;
/** If invoked when the cancelable attribute value is true, and while
* executing a listener for the event with passive set to false, signals to
* the operation that caused event to be dispatched that it needs to be
* canceled. */
preventDefault(): void;
/** Invoking this method prevents event from reaching any registered event
* listeners after the current one finishes running and, when dispatched in a
* tree, also prevents event from reaching any other objects. */
stopImmediatePropagation(): void;
/** When dispatched in a tree, invoking this method prevents event from
* reaching any objects other than the current object. */
stopPropagation(): void;
readonly NONE: 0;
readonly CAPTURING_PHASE: 1;
readonly AT_TARGET: 2;
readonly BUBBLING_PHASE: 3;
}
/** An event which takes place in the DOM.
*
* @category Events
*/
declare var Event: {
readonly prototype: Event;
new (type: string, eventInitDict?: EventInit): Event;
readonly NONE: 0;
readonly CAPTURING_PHASE: 1;
readonly AT_TARGET: 2;
readonly BUBBLING_PHASE: 3;
};
/**
* EventTarget is a DOM interface implemented by objects that can receive events
* and may have listeners for them.
*
* @category Events
*/
interface EventTarget {
/** Appends an event listener for events whose type attribute value is type.
* The callback argument sets the callback that will be invoked when the event
* is dispatched.
*
* The options argument sets listener-specific options. For compatibility this
* can be a boolean, in which case the method behaves exactly as if the value
* was specified as options's capture.
*
* When set to true, options's capture prevents callback from being invoked
* when the event's eventPhase attribute value is BUBBLING_PHASE. When false
* (or not present), callback will not be invoked when event's eventPhase
* attribute value is CAPTURING_PHASE. Either way, callback will be invoked if
* event's eventPhase attribute value is AT_TARGET.
*
* When set to true, options's passive indicates that the callback will not
* cancel the event by invoking preventDefault(). This is used to enable
* performance optimizations described in § 2.8 Observing event listeners.
*
* When set to true, options's once indicates that the callback will only be
* invoked once after which the event listener will be removed.
*
* The event listener is appended to target's event listener list and is not
* appended if it has the same type, callback, and capture. */
addEventListener(
type: string,
listener: EventListenerOrEventListenerObject | null,
options?: boolean | AddEventListenerOptions,
): void;
/** Dispatches a synthetic event to event target and returns true if either
* event's cancelable attribute value is false or its preventDefault() method
* was not invoked, and false otherwise. */
dispatchEvent(event: Event): boolean;
/** Removes the event listener in target's event listener list with the same
* type, callback, and options. */
removeEventListener(
type: string,
callback: EventListenerOrEventListenerObject | null,
options?: EventListenerOptions | boolean,
): void;
}
/**
* EventTarget is a DOM interface implemented by objects that can receive events
* and may have listeners for them.
*
* @category Events
*/
declare var EventTarget: {
readonly prototype: EventTarget;
new (): EventTarget;
};
/** @category Events */
interface EventListener {
(evt: Event): void;
}
/** @category Events */
interface EventListenerObject {
handleEvent(evt: Event): void;
}
/** @category Events */
type EventListenerOrEventListenerObject =
| EventListener
| EventListenerObject;
/** @category Events */
interface AddEventListenerOptions extends EventListenerOptions {
once?: boolean;
passive?: boolean;
signal?: AbortSignal;
}
/** @category Events */
interface EventListenerOptions {
capture?: boolean;
}
/** @category Events */
interface ProgressEventInit extends EventInit {
lengthComputable?: boolean;
loaded?: number;
total?: number;
}
/** Events measuring progress of an underlying process, like an HTTP request
* (for an XMLHttpRequest, or the loading of the underlying resource of an
* <img>, <audio>, <video>, <style> or <link>).
*
* @category Events
*/
interface ProgressEvent<T extends EventTarget = EventTarget> extends Event {
readonly lengthComputable: boolean;
readonly loaded: number;
readonly target: T | null;
readonly total: number;
}
/** Events measuring progress of an underlying process, like an HTTP request
* (for an XMLHttpRequest, or the loading of the underlying resource of an
* <img>, <audio>, <video>, <style> or <link>).
*
* @category Events
*/
declare var ProgressEvent: {
readonly prototype: ProgressEvent;
new (type: string, eventInitDict?: ProgressEventInit): ProgressEvent;
};
/** Decodes a string of data which has been encoded using base-64 encoding.
*
* ```
* console.log(atob("aGVsbG8gd29ybGQ=")); // outputs 'hello world'
* ```
*
* @category Encoding
*/
declare function atob(s: string): string;
/** Creates a base-64 ASCII encoded string from the input string.
*
* ```
* console.log(btoa("hello world")); // outputs "aGVsbG8gd29ybGQ="
* ```
*
* @category Encoding
*/
declare function btoa(s: string): string;
/** @category Encoding */
interface TextDecoderOptions {
fatal?: boolean;
ignoreBOM?: boolean;
}
/** @category Encoding */
interface TextDecodeOptions {
stream?: boolean;
}
/**
* Represents a decoder for a specific text encoding, allowing you to convert
* binary data into a string given the encoding.
*
* @example
* ```ts
* const decoder = new TextDecoder('utf-8');
* const buffer = new Uint8Array([72, 101, 108, 108, 111]);
* const decodedString = decoder.decode(buffer);
* console.log(decodedString); // Outputs: "Hello"
* ```
*
* @category Encoding
*/
interface TextDecoder extends TextDecoderCommon {
/** Turns binary data, often in the form of a Uint8Array, into a string given
* the encoding.
*/
decode(input?: BufferSource, options?: TextDecodeOptions): string;
}
/** @category Encoding */
declare var TextDecoder: {
readonly prototype: TextDecoder;
new (label?: string, options?: TextDecoderOptions): TextDecoder;
};
/** @category Encoding */
interface TextDecoderCommon {
/** Returns encoding's name, lowercased. */
readonly encoding: string;
/** Returns true if error mode is "fatal", otherwise false. */
readonly fatal: boolean;
/** Returns the value of ignore BOM. */
readonly ignoreBOM: boolean;
}
/** @category Encoding */
interface TextEncoderEncodeIntoResult {
read: number;
written: number;
}
/** @category Encoding */
interface TextEncoder extends TextEncoderCommon {
/** Returns the result of running UTF-8's encoder. */
encode(input?: string): Uint8Array;
encodeInto(input: string, dest: Uint8Array): TextEncoderEncodeIntoResult;
}
/**
* Allows you to convert a string into binary data (in the form of a Uint8Array)
* given the encoding.
*
* @example
* ```ts
* const encoder = new TextEncoder();
* const str = "Hello";
* const encodedData = encoder.encode(str);
* console.log(encodedData); // Outputs: Uint8Array(5) [72, 101, 108, 108, 111]
* ```
*
* @category Encoding
*/
interface TextEncoder extends TextEncoderCommon {
/** Turns a string into binary data (in the form of a Uint8Array) using UTF-8 encoding. */
encode(input?: string): Uint8Array;
/** Encodes a string into the destination Uint8Array and returns the result of the encoding. */
encodeInto(input: string, dest: Uint8Array): TextEncoderEncodeIntoResult;
}
/** @category Encoding */
declare var TextEncoder: {
readonly prototype: TextEncoder;
new (): TextEncoder;
};
/** @category Encoding */
interface TextEncoderCommon {
/** Returns "utf-8". */
readonly encoding: string;
}
/** @category Encoding */
interface TextDecoderStream extends GenericTransformStream, TextDecoderCommon {
readonly readable: ReadableStream<string>;
readonly writable: WritableStream<BufferSource>;
}
/** @category Encoding */
declare var TextDecoderStream: {
readonly prototype: TextDecoderStream;
new (label?: string, options?: TextDecoderOptions): TextDecoderStream;
};
/** @category Encoding */
interface TextEncoderStream extends GenericTransformStream, TextEncoderCommon {
readonly readable: ReadableStream<Uint8Array>;
readonly writable: WritableStream<string>;
}
/** @category Encoding */
declare var TextEncoderStream: {
readonly prototype: TextEncoderStream;
new (): TextEncoderStream;
};
/** A controller object that allows you to abort one or more DOM requests as and
* when desired.
*
* @category Platform
*/
interface AbortController {
/** Returns the AbortSignal object associated with this object. */
readonly signal: AbortSignal;
/** Invoking this method will set this object's AbortSignal's aborted flag and
* signal to any observers that the associated activity is to be aborted. */
abort(reason?: any): void;
}
/** A controller object that allows you to abort one or more DOM requests as and
* when desired.
*
* @category Platform
*/
declare var AbortController: {
readonly prototype: AbortController;
new (): AbortController;
};
/** @category Platform */
interface AbortSignalEventMap {
abort: Event;
}
/** A signal object that allows you to communicate with a DOM request (such as a
* Fetch) and abort it if required via an AbortController object.
*
* @category Platform
*/
interface AbortSignal extends EventTarget {
/** Returns true if this AbortSignal's AbortController has signaled to abort,
* and false otherwise. */
readonly aborted: boolean;
readonly reason: any;
onabort: ((this: AbortSignal, ev: Event) => any) | null;
addEventListener<K extends keyof AbortSignalEventMap>(
type: K,
listener: (this: AbortSignal, ev: AbortSignalEventMap[K]) => any,
options?: boolean | AddEventListenerOptions,
): void;
addEventListener(
type: string,
listener: EventListenerOrEventListenerObject,
options?: boolean | AddEventListenerOptions,
): void;
removeEventListener<K extends keyof AbortSignalEventMap>(
type: K,
listener: (this: AbortSignal, ev: AbortSignalEventMap[K]) => any,
options?: boolean | EventListenerOptions,
): void;
removeEventListener(
type: string,
listener: EventListenerOrEventListenerObject,
options?: boolean | EventListenerOptions,
): void;
/** Throws this AbortSignal's abort reason, if its AbortController has
* signaled to abort; otherwise, does nothing. */
throwIfAborted(): void;
}
/** @category Platform */
declare var AbortSignal: {
readonly prototype: AbortSignal;
new (): never;
abort(reason?: any): AbortSignal;
any(signals: AbortSignal[]): AbortSignal;
timeout(milliseconds: number): AbortSignal;
};
/** @category File */
interface FileReaderEventMap {
"abort": ProgressEvent<FileReader>;
"error": ProgressEvent<FileReader>;
"load": ProgressEvent<FileReader>;
"loadend": ProgressEvent<FileReader>;
"loadstart": ProgressEvent<FileReader>;
"progress": ProgressEvent<FileReader>;
}
/** Lets web applications asynchronously read the contents of files (or raw data
* buffers) stored on the user's computer, using File or Blob objects to specify
* the file or data to read.
*
* @category File
*/
interface FileReader extends EventTarget {
readonly error: DOMException | null;
onabort: ((this: FileReader, ev: ProgressEvent<FileReader>) => any) | null;
onerror: ((this: FileReader, ev: ProgressEvent<FileReader>) => any) | null;
onload: ((this: FileReader, ev: ProgressEvent<FileReader>) => any) | null;
onloadend: ((this: FileReader, ev: ProgressEvent<FileReader>) => any) | null;
onloadstart:
| ((this: FileReader, ev: ProgressEvent<FileReader>) => any)
| null;
onprogress: ((this: FileReader, ev: ProgressEvent<FileReader>) => any) | null;
readonly readyState:
| typeof FileReader.EMPTY
| typeof FileReader.LOADING
| typeof FileReader.DONE;
readonly result: string | ArrayBuffer | null;
abort(): void;
readAsArrayBuffer(blob: Blob): void;
/** @deprecated */
readAsBinaryString(blob: Blob): void;
readAsDataURL(blob: Blob): void;
readAsText(blob: Blob, encoding?: string): void;
readonly EMPTY: 0;
readonly LOADING: 1;
readonly DONE: 2;
addEventListener<K extends keyof FileReaderEventMap>(
type: K,
listener: (this: FileReader, ev: FileReaderEventMap[K]) => any,
options?: boolean | AddEventListenerOptions,
): void;
addEventListener(
type: string,
listener: EventListenerOrEventListenerObject,
options?: boolean | AddEventListenerOptions,
): void;
removeEventListener<K extends keyof FileReaderEventMap>(
type: K,
listener: (this: FileReader, ev: FileReaderEventMap[K]) => any,
options?: boolean | EventListenerOptions,
): void;
removeEventListener(
type: string,
listener: EventListenerOrEventListenerObject,
options?: boolean | EventListenerOptions,
): void;
}
/** @category File */
declare var FileReader: {
readonly prototype: FileReader;
new (): FileReader;
readonly EMPTY: 0;
readonly LOADING: 1;
readonly DONE: 2;
};
/** @category File */
type BlobPart = BufferSource | Blob | string;
/** @category File */
type EndingType = "transparent" | "native";
/** @category File */
interface BlobPropertyBag {
type?: string;
endings?: EndingType;
}
/** 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.
*
* @category File
*/
interface Blob {
readonly size: number;
readonly type: string;
arrayBuffer(): Promise<ArrayBuffer>;
bytes(): Promise<Uint8Array>;
slice(start?: number, end?: number, contentType?: string): Blob;
stream(): ReadableStream<Uint8Array>;
text(): Promise<string>;
}
/** 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.
*
* @category File
*/
declare var Blob: {
readonly prototype: Blob;
new (blobParts?: BlobPart[], options?: BlobPropertyBag): Blob;
};
/** @category File */
interface FilePropertyBag extends BlobPropertyBag {
lastModified?: number;
}
/** Provides information about files and allows JavaScript in a web page to
* access their content.
*
* @category File
*/
interface File extends Blob {
readonly lastModified: number;
readonly name: string;
readonly webkitRelativePath: string;
}
/** Provides information about files and allows JavaScript in a web page to
* access their content.
*
* @category File
*/
declare var File: {
readonly prototype: File;
new (fileBits: BlobPart[], fileName: string, options?: FilePropertyBag): File;
};
/** @category Streams */
type ReadableStreamReader<T> =
| ReadableStreamDefaultReader<T>
| ReadableStreamBYOBReader;
/** @category Streams */
type ReadableStreamController<T> =
| ReadableStreamDefaultController<T>
| ReadableByteStreamController;
/** @category Streams */
interface ReadableStreamGenericReader {
readonly closed: Promise<undefined>;
cancel(reason?: any): Promise<void>;
}
/** @category Streams */
interface ReadableStreamReadDoneResult<T> {
done: true;
value?: T;
}
/** @category Streams */
interface ReadableStreamReadValueResult<T> {
done: false;
value: T;
}
/** @category Streams */
type ReadableStreamReadResult<T> =
| ReadableStreamReadValueResult<T>
| ReadableStreamReadDoneResult<T>;
/** @category Streams */
interface ReadableStreamDefaultReader<R = any>
extends ReadableStreamGenericReader {
read(): Promise<ReadableStreamReadResult<R>>;
releaseLock(): void;
}
/** @category Streams */
declare var ReadableStreamDefaultReader: {
readonly prototype: ReadableStreamDefaultReader;
new <R = any>(stream: ReadableStream<R>): ReadableStreamDefaultReader<R>;
};
/** @category Streams */
interface ReadableStreamBYOBReaderReadOptions {
min?: number;
}
/** @category Streams */
interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
read<T extends ArrayBufferView>(
view: T,
options?: ReadableStreamBYOBReaderReadOptions,
): Promise<ReadableStreamReadResult<T>>;
releaseLock(): void;
}
/** @category Streams */
declare var ReadableStreamBYOBReader: {
readonly prototype: ReadableStreamBYOBReader;
new (stream: ReadableStream<Uint8Array>): ReadableStreamBYOBReader;
};
/** @category Streams */
interface ReadableStreamBYOBRequest {
readonly view: ArrayBufferView | null;
respond(bytesWritten: number): void;
respondWithNewView(view: ArrayBufferView): void;
}
/** @category Streams */
declare var ReadableStreamBYOBRequest: {
readonly prototype: ReadableStreamBYOBRequest;
new (): never;
};
/** @category Streams */
interface UnderlyingByteSource {
autoAllocateChunkSize?: number;
cancel?: UnderlyingSourceCancelCallback;
pull?: (controller: ReadableByteStreamController) => void | PromiseLike<void>;
start?: (controller: ReadableByteStreamController) => any;
type: "bytes";
}
/** @category Streams */
interface UnderlyingDefaultSource<R = any> {
cancel?: UnderlyingSourceCancelCallback;
pull?: (
controller: ReadableStreamDefaultController<R>,
) => void | PromiseLike<void>;
start?: (controller: ReadableStreamDefaultController<R>) => any;
type?: undefined;
}
/** @category Streams */
interface UnderlyingSink<W = any> {
abort?: UnderlyingSinkAbortCallback;
close?: UnderlyingSinkCloseCallback;
start?: UnderlyingSinkStartCallback;
type?: undefined;
write?: UnderlyingSinkWriteCallback<W>;
}
/** @category Streams */
type ReadableStreamType = "bytes";
/** @category Streams */
interface UnderlyingSource<R = any> {
autoAllocateChunkSize?: number;
cancel?: UnderlyingSourceCancelCallback;
pull?: UnderlyingSourcePullCallback<R>;
start?: UnderlyingSourceStartCallback<R>;
type?: ReadableStreamType;
}
/** @category Streams */
interface UnderlyingSourceCancelCallback {
(reason?: any): void | PromiseLike<void>;
}
/** @category Streams */
interface UnderlyingSourcePullCallback<R> {
(controller: ReadableStreamController<R>): void | PromiseLike<void>;
}
/** @category Streams */
interface UnderlyingSourceStartCallback<R> {
(controller: ReadableStreamController<R>): any;
}
/** @category Streams */
interface ReadableStreamDefaultController<R = any> {
readonly desiredSize: number | null;
close(): void;
enqueue(chunk?: R): void;
error(e?: any): void;
}
/** @category Streams */
declare var ReadableStreamDefaultController: {
readonly prototype: ReadableStreamDefaultController;
new (): never;
};
/** @category Streams */
interface ReadableByteStreamController {
readonly byobRequest: ReadableStreamBYOBRequest | null;
readonly desiredSize: number | null;
close(): void;
enqueue(chunk: ArrayBufferView): void;
error(e?: any): void;
}
/** @category Streams */
declare var ReadableByteStreamController: {
readonly prototype: ReadableByteStreamController;
new (): never;
};
/** @category Streams */
interface StreamPipeOptions {
preventAbort?: boolean;
preventCancel?: boolean;
preventClose?: boolean;
signal?: AbortSignal;
}
/** @category Streams */
interface QueuingStrategySize<T = any> {
(chunk: T): number;
}
/** @category Streams */
interface QueuingStrategy<T = any> {
highWaterMark?: number;
size?: QueuingStrategySize<T>;
}
/** This Streams API interface provides a built-in byte length queuing strategy
* that can be used when constructing streams.
*
* @category Streams
*/
interface CountQueuingStrategy extends QueuingStrategy {
readonly highWaterMark: number;
readonly size: QueuingStrategySize;
}
/** @category Streams */
declare var CountQueuingStrategy: {
readonly prototype: CountQueuingStrategy;
new (init: QueuingStrategyInit): CountQueuingStrategy;
};
/** @category Streams */
interface ByteLengthQueuingStrategy extends QueuingStrategy<ArrayBufferView> {
readonly highWaterMark: number;
readonly size: QueuingStrategySize<ArrayBufferView>;
}
/** @category Streams */
declare var ByteLengthQueuingStrategy: {
readonly prototype: ByteLengthQueuingStrategy;
new (init: QueuingStrategyInit): ByteLengthQueuingStrategy;
};
/** @category Streams */
interface QueuingStrategyInit {
highWaterMark: 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.
*
* @category Streams
*/
interface ReadableStream<R = any> {
readonly locked: boolean;
cancel(reason?: any): Promise<void>;
getReader(options: { mode: "byob" }): ReadableStreamBYOBReader;
getReader(): ReadableStreamDefaultReader<R>;
getReader(options?: ReadableStreamGetReaderOptions): ReadableStreamReader<R>;
pipeThrough<T>(
transform: ReadableWritablePair<T, R>,
options?: StreamPipeOptions,
): ReadableStream<T>;
pipeTo(
destination: WritableStream<R>,
options?: StreamPipeOptions,
): Promise<void>;
tee(): [ReadableStream<R>, ReadableStream<R>];
values(options?: ReadableStreamIteratorOptions): AsyncIterableIterator<R>;
[Symbol.asyncIterator](
options?: ReadableStreamIteratorOptions,
): AsyncIterableIterator<R>;
}
/** @category Streams */
declare var ReadableStream: {
readonly prototype: ReadableStream;
new (
underlyingSource: UnderlyingByteSource,
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strategy?: { highWaterMark?: number },
): ReadableStream<Uint8Array>;
new <R = any>(
underlyingSource: UnderlyingDefaultSource<R>,
strategy?: QueuingStrategy<R>,
): ReadableStream<R>;
new <R = any>(
underlyingSource?: UnderlyingSource<R>,
strategy?: QueuingStrategy<R>,
): ReadableStream<R>;
from<R>(
asyncIterable: AsyncIterable<R> | Iterable<R | PromiseLike<R>> & object,
): ReadableStream<R>;
};
/** @category Streams */
interface ReadableStreamIteratorOptions {
preventCancel?: boolean;
}
/** @category Streams */
type ReadableStreamReaderMode = "byob";
/** @category Streams */
interface ReadableStreamGetReaderOptions {
mode?: ReadableStreamReaderMode;
}
/** @category Streams */
interface ReadableWritablePair<R = any, W = any> {
readable: ReadableStream<R>;
writable: WritableStream<W>;
}
/** @category Streams */
interface UnderlyingSinkCloseCallback {
(): void | PromiseLike<void>;
}
/** @category Streams */
interface UnderlyingSinkStartCallback {
(controller: WritableStreamDefaultController): any;
}
/** @category Streams */
interface UnderlyingSinkWriteCallback<W> {
(
chunk: W,
controller: WritableStreamDefaultController,
): void | PromiseLike<void>;
}
/** @category Streams */
interface UnderlyingSinkAbortCallback {
(reason?: any): void | PromiseLike<void>;
}
/** 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.
*
* @category Streams
*/
interface WritableStream<W = any> {
readonly locked: boolean;
abort(reason?: any): Promise<void>;
close(): Promise<void>;
getWriter(): WritableStreamDefaultWriter<W>;
}
/** @category Streams */
declare var WritableStream: {
readonly prototype: WritableStream;
new <W = any>(
underlyingSink?: UnderlyingSink<W>,
strategy?: QueuingStrategy<W>,
): WritableStream<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.
*
* @category Streams
*/
interface WritableStreamDefaultController {
readonly signal: AbortSignal;
error(e?: any): void;
}
/** @category Streams */
declare var WritableStreamDefaultController: {
readonly prototype: WritableStreamDefaultController;
new (): never;
};
/** 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.
*
* @category Streams
*/
interface WritableStreamDefaultWriter<W = any> {
readonly closed: Promise<undefined>;
readonly desiredSize: number | null;
readonly ready: Promise<undefined>;
abort(reason?: any): Promise<void>;
close(): Promise<void>;
releaseLock(): void;
write(chunk?: W): Promise<void>;
}
/** @category Streams */
declare var WritableStreamDefaultWriter: {
readonly prototype: WritableStreamDefaultWriter;
new <W = any>(stream: WritableStream<W>): WritableStreamDefaultWriter<W>;
};
/** @category Streams */
interface TransformStream<I = any, O = any> {
readonly readable: ReadableStream<O>;
readonly writable: WritableStream<I>;
}
/** @category Streams */
declare var TransformStream: {
readonly prototype: TransformStream;
new <I = any, O = any>(
transformer?: Transformer<I, O>,
writableStrategy?: QueuingStrategy<I>,
readableStrategy?: QueuingStrategy<O>,
): TransformStream<I, O>;
};
/** @category Streams */
interface TransformStreamDefaultController<O = any> {
readonly desiredSize: number | null;
enqueue(chunk?: O): void;
error(reason?: any): void;
terminate(): void;
}
/** @category Streams */
declare var TransformStreamDefaultController: {
readonly prototype: TransformStreamDefaultController;
new (): never;
};
/** @category Streams */
interface Transformer<I = any, O = any> {
flush?: TransformerFlushCallback<O>;
readableType?: undefined;
start?: TransformerStartCallback<O>;
transform?: TransformerTransformCallback<I, O>;
cancel?: TransformerCancelCallback;
writableType?: undefined;
}
/** @category Streams */
interface TransformerFlushCallback<O> {
(controller: TransformStreamDefaultController<O>): void | PromiseLike<void>;
}
/** @category Streams */
interface TransformerStartCallback<O> {
(controller: TransformStreamDefaultController<O>): any;
}
/** @category Streams */
interface TransformerTransformCallback<I, O> {
(
chunk: I,
controller: TransformStreamDefaultController<O>,
): void | PromiseLike<void>;
}
/** @category Streams */
interface TransformerCancelCallback {
(reason: any): void | PromiseLike<void>;
}
/** @category Streams */
interface GenericTransformStream {
readonly readable: ReadableStream;
readonly writable: WritableStream;
}
/** @category Events */
type MessageEventSource = Window | MessagePort;
/** @category Events */
interface MessageEventInit<T = any> extends EventInit {
data?: T;
lastEventId?: string;
origin?: string;
ports?: MessagePort[];
source?: MessageEventSource | null;
}
/** @category Events */
interface MessageEvent<T = any> extends Event {
/**
* Returns the data of the message.
*/
readonly data: T;
/**
* Returns the origin of the message, for server-sent events.
*/
readonly origin: string;
/**
* Returns the last event ID string, for server-sent events.
*/
readonly lastEventId: string;
readonly source: MessageEventSource | null;
/**
* Returns transferred ports.
*/
readonly ports: ReadonlyArray<MessagePort>;
/** @deprecated */
initMessageEvent(
type: string,
bubbles?: boolean,
cancelable?: boolean,
data?: any,
origin?: string,
lastEventId?: string,
source?: MessageEventSource | null,
ports?: MessagePort[],
): void;
}
/** @category Events */
declare var MessageEvent: {
readonly prototype: MessageEvent;
new <T>(type: string, eventInitDict?: MessageEventInit<T>): MessageEvent<T>;
};
/** @category Events */
type Transferable = MessagePort | ArrayBuffer;
/** @category Platform */
interface StructuredSerializeOptions {
transfer?: Transferable[];
}
/** The MessageChannel interface of the Channel Messaging API allows us to
* create a new message channel and send data through it via its two MessagePort
* properties.
*
* @category Messaging
*/
interface MessageChannel {
readonly port1: MessagePort;
readonly port2: MessagePort;
}
/** The MessageChannel interface of the Channel Messaging API allows us to
* create a new message channel and send data through it via its two MessagePort
* properties.
*
* @category Messaging
*/
declare var MessageChannel: {
readonly prototype: MessageChannel;
new (): MessageChannel;
};
/** @category Messaging */
interface MessagePortEventMap {
"message": MessageEvent;
"messageerror": MessageEvent;
}
/** The MessagePort interface of the Channel Messaging API represents one of the
* two ports of a MessageChannel, allowing messages to be sent from one port and
* listening out for them arriving at the other.
*
* @category Messaging
*/
interface MessagePort extends EventTarget {
onmessage: ((this: MessagePort, ev: MessageEvent) => any) | null;
onmessageerror: ((this: MessagePort, ev: MessageEvent) => any) | null;
/**
* Disconnects the port, so that it is no longer active.
*/
close(): void;
/**
* Posts a message through the channel. Objects listed in transfer are
* transferred, not just cloned, meaning that they are no longer usable on the
* sending side.
*
* Throws a "DataCloneError" DOMException if transfer contains duplicate
* objects or port, or if message could not be cloned.
*/
postMessage(message: any, transfer: Transferable[]): void;
postMessage(message: any, options?: StructuredSerializeOptions): void;
/**
* Begins dispatching messages received on the port. This is implicitly called
* when assigning a value to `this.onmessage`.
*/
start(): void;
addEventListener<K extends keyof MessagePortEventMap>(
type: K,
listener: (this: MessagePort, ev: MessagePortEventMap[K]) => any,
options?: boolean | AddEventListenerOptions,
): void;
addEventListener(
type: string,
listener: EventListenerOrEventListenerObject,
options?: boolean | AddEventListenerOptions,
): void;
removeEventListener<K extends keyof MessagePortEventMap>(
type: K,
listener: (this: MessagePort, ev: MessagePortEventMap[K]) => any,
options?: boolean | EventListenerOptions,
): void;
removeEventListener(
type: string,
listener: EventListenerOrEventListenerObject,
options?: boolean | EventListenerOptions,
): void;
}
/** The MessagePort interface of the Channel Messaging API represents one of the
* two ports of a MessageChannel, allowing messages to be sent from one port and
* listening out for them arriving at the other.
*
* @category Messaging
*/
declare var MessagePort: {
readonly prototype: MessagePort;
new (): never;
};
/**
* Creates a deep copy of a given value using the structured clone algorithm.
*
* Unlike a shallow copy, a deep copy does not hold the same references as the
* source object, meaning its properties can be changed without affecting the
* source. For more details, see
* [MDN](https://developer.mozilla.org/en-US/docs/Glossary/Deep_copy).
*
* Throws a `DataCloneError` if any part of the input value is not
* serializable.
*
* @example
* ```ts
* const object = { x: 0, y: 1 };
*
* const deepCopy = structuredClone(object);
* deepCopy.x = 1;
* console.log(deepCopy.x, object.x); // 1 0
*
* const shallowCopy = object;
* shallowCopy.x = 1;
* // shallowCopy.x is pointing to the same location in memory as object.x
* console.log(shallowCopy.x, object.x); // 1 1
* ```
*
* @category Platform
*/
declare function structuredClone<T = any>(
value: T,
options?: StructuredSerializeOptions,
): T;
/**
* An API for compressing a stream of data.
*
* @example
* ```ts
* await Deno.stdin.readable
* .pipeThrough(new CompressionStream("gzip"))
* .pipeTo(Deno.stdout.writable);
* ```
*
* @category Streams
*/
interface CompressionStream extends GenericTransformStream {
readonly readable: ReadableStream<Uint8Array>;
readonly writable: WritableStream<BufferSource>;
}
/** @category Streams */
type CompressionFormat = "deflate" | "deflate-raw" | "gzip";
/**
* An API for compressing a stream of data.
*
* @example
* ```ts
* await Deno.stdin.readable
* .pipeThrough(new CompressionStream("gzip"))
* .pipeTo(Deno.stdout.writable);
* ```
*
* @category Streams
*/
declare var CompressionStream: {
readonly prototype: CompressionStream;
/**
* Creates a new `CompressionStream` object which compresses a stream of
* data.
*
* Throws a `TypeError` if the format passed to the constructor is not
* supported.
*/
new (format: CompressionFormat): CompressionStream;
};
/**
* An API for decompressing a stream of data.
*
* @example
* ```ts
* const input = await Deno.open("./file.txt.gz");
* const output = await Deno.create("./file.txt");
*
* await input.readable
* .pipeThrough(new DecompressionStream("gzip"))
* .pipeTo(output.writable);
* ```
*
* @category Streams
*/
interface DecompressionStream extends GenericTransformStream {
readonly readable: ReadableStream<Uint8Array>;
readonly writable: WritableStream<BufferSource>;
}
/**
* An API for decompressing a stream of data.
*
* @example
* ```ts
* const input = await Deno.open("./file.txt.gz");
* const output = await Deno.create("./file.txt");
*
* await input.readable
* .pipeThrough(new DecompressionStream("gzip"))
* .pipeTo(output.writable);
* ```
*
* @category Streams
*/
declare var DecompressionStream: {
readonly prototype: DecompressionStream;
/**
* Creates a new `DecompressionStream` object which decompresses a stream of
* data.
*
* Throws a `TypeError` if the format passed to the constructor is not
* supported.
*/
new (format: CompressionFormat): DecompressionStream;
};
/** Dispatch an uncaught exception. Similar to a synchronous version of:
* ```ts
* setTimeout(() => { throw error; }, 0);
* ```
* The error can not be caught with a `try/catch` block. An error event will
* be dispatched to the global scope. You can prevent the error from being
* reported to the console with `Event.prototype.preventDefault()`:
* ```ts
* addEventListener("error", (event) => {
* event.preventDefault();
* });
* reportError(new Error("foo")); // Will not be reported.
* ```
* In Deno, this error will terminate the process if not intercepted like above.
*
* @category Platform
*/
declare function reportError(
error: any,
): void;
/** @category Platform */
type PredefinedColorSpace = "srgb" | "display-p3";
/** @category Platform */
interface ImageDataSettings {
readonly colorSpace?: PredefinedColorSpace;
}
/** @category Platform */
interface ImageData {
readonly colorSpace: PredefinedColorSpace;
readonly data: Uint8ClampedArray;
readonly height: number;
readonly width: number;
}
/** @category Platform */
declare var ImageData: {
readonly prototype: ImageData;
new (sw: number, sh: number, settings?: ImageDataSettings): ImageData;
new (
data: Uint8ClampedArray,
sw: number,
sh?: number,
settings?: ImageDataSettings,
): ImageData;
};