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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This file contains some DOM element properties that are available in Chrome
// but not in TypeScript lib.d.ts since they're not generally available on all
// browsers.
// The following interface are removed from TypeScript 4.4 default
// lib.dom.d.ts.
// See https://github.com/microsoft/TypeScript-DOM-lib-generator/issues/1029
// for detail.
interface DocumentOrShadowRoot {
getSelection(): Selection|null;
}
interface HTMLElement {
scrollIntoViewIfNeeded(): void;
}
interface HTMLDialogElement {
close(returnValue?: string): void;
open: boolean;
returnValue: string;
showModal(): void;
}
// https://developer.mozilla.org/en-US/docs/Web/API/UIEvent/sourceCapabilities
interface UIEvent extends Event {
readonly sourceCapabilities: InputDeviceCapabilities|null;
}
// https://developer.mozilla.org/en-US/docs/Web/API/InputDeviceCapabilities
declare class InputDeviceCapabilities {
readonly firesTouchEvents: boolean;
readonly pointerMovementScrolls: boolean;
constructor(param: {firesTouchEvents: boolean});
}
interface UIEventInit {
// https://developer.mozilla.org/en-US/docs/Web/API/UIEvent/sourceCapabilities
sourceCapabilities?: InputDeviceCapabilities|null;
}
// Barcode Detection API, this is currently only supported in Chrome on
// ChromeOS, Android or macOS.
// https://wicg.github.io/shape-detection-api/
// https://developer.mozilla.org/en-US/docs/Web/API/BarcodeDetector
declare class BarcodeDetector {
static getSupportedFormats(): Promise<BarcodeFormat[]>;
constructor(barcodeDetectorOptions?: BarcodeDetectorOptions);
detect(image: ImageBitmapSource): Promise<DetectedBarcode[]>;
}
interface BarcodeDetectorOptions {
formats?: BarcodeFormat[];
}
interface DetectedBarcode {
boundingBox: DOMRectReadOnly;
rawValue: string;
format: BarcodeFormat;
cornerPoints: ReadonlyArray<{x: number, y: number}>;
}
type BarcodeFormat =
'aztec'|'codabar'|'code_39'|'code_93'|'code_128'|'data_matrix'|'ean_8'|
'ean_13'|'itf'|'pdf417'|'qr_code'|'unknown'|'upc_a'|'upc_e';
// TODO(b/338624981): This should be exported in mediapipe's vision.d.ts.
/** A two-dimensional matrix. */
declare interface Matrix {
/** The number of rows. */
rows: number;
/** The number of columns. */
columns: number;
/** The values as a flattened one-dimensional array. */
data: number[];
}
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set/
interface Set<T> {
difference(other: Set<T>): Set<T>;
}
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