import { ShortcutSignatureInfo } from '../../../../components/shortcut-provider/src/types';
export declare function isKeyboardEvent(event: any): event is KeyboardEvent;
export declare function normalizeSignatureInfo(info: KeyboardEvent | Partial<ShortcutSignatureInfo>): Required<ShortcutSignatureInfo>;
export declare function getKeySignature(info: KeyboardEvent | Partial<ShortcutSignatureInfo>): string;
export declare function inKeyBlackList(key: string): boolean;
export declare function isInvalidSignatureAtInput(info: KeyboardEvent, allowSpace?: boolean): boolean;
export declare function isInvalidSignature(info: KeyboardEvent | Partial<ShortcutSignatureInfo>): boolean;
export declare function getDisplaySignature(info: KeyboardEvent | Partial<ShortcutSignatureInfo>): string;
export declare function transformKey2DisplaySignature(keySignature: string): string;
export declare function isShortcutProvider(ele: HTMLElement): boolean;