a11y.ts — astro Source File

Source Code

/**
 * https://github.com/sveltejs/svelte/blob/61e5e53eee82e895c1a5b4fd36efb87eafa1fc2d/LICENSE.md
 * @license MIT
 *
 * Copyright (c) 2016-23 [these people](https://github.com/sveltejs/svelte/graphs/contributors)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import type { ARIARoleDefinitionKey } from 'aria-query';
import { aria, roles } from 'aria-query';
// @ts-expect-error package does not provide types
import { AXObjectRoles, elementAXObjects } from 'axobject-query';
import type { AuditRuleWithSelector } from './index.js';

const WHITESPACE_REGEX = /\s+/;

const a11y_required_attributes = {
	a: ['href'],
	area: ['alt', 'aria-label', 'aria-labelledby'],
	// html-has-lang
	html: ['lang'],
	// iframe-has-title
	iframe: ['title'],
	img: ['alt'],
	object: ['title', 'aria-label', 'aria-labelledby'],
};

const MAYBE_INTERACTIVE = new Map([
	['a', 'href'],
	['input', 'type'],
	['audio', 'controls'],
	['img', 'usemap'],
	['object', 'usemap'],
	['video', 'controls'],
]);

const interactiveElements = [
	'button',
	'details',
	'embed',
	'iframe',
	'label',
	'select',
// ... (650 more lines)