import { KeyMatcher } from '@ryusei/code';
/**
 * Mocks the keydown event.
 *
 * @param elm   - A target element.
 * @param key   - A key.
 * @param input - Optional. Whether to also trigger the input event or not.
 */
export declare function pressKey(elm: HTMLElement | Window, key: string | KeyMatcher, input?: boolean): void;
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