/**
 * Key code definitions for keyboard input.
 */
export interface KeyDefinition {
    key: string;
    code: string;
    keyCode: number;
    text?: string;
    location?: number;
    shiftKey?: string;
    shiftKeyCode?: number;
    shiftText?: string;
}
/**
 * Modifier key flags
 */
export declare const Modifiers: {
    readonly None: 0;
    readonly Alt: 1;
    readonly Control: 2;
    readonly Meta: 4;
    readonly Shift: 8;
};
/**
 * Key definitions for common keys.
 */
export declare const Keys: Record<string, KeyDefinition>;
/**
 * Get key definition from a key name.
 * Supports both key names (Enter, Shift) and single characters.
 */
export declare function getKeyDefinition(key: string): KeyDefinition | null;
/**
 * Parse a key combination string like "Control+Shift+A".
 */
export declare function parseKeyCombination(combo: string): {
    modifiers: number;
    key: KeyDefinition | null;
};
/**
 * Get key definition with shift applied if needed.
 * When shiftPressed is true and the key has a shift variant,
 * returns a modified definition with the shifted key/text.
 */
export declare function getKeyDefinitionWithShift(key: string, shiftPressed: boolean): KeyDefinition | null;
/**
 * Reverse lookup: find key definition from a character.
 * Used for typing shifted characters like '!' or 'A'.
 * Returns the base key definition and whether shift is needed.
 */
export declare function getKeyDefinitionFromChar(char: string): {
    definition: KeyDefinition;
    needsShift: boolean;
} | null;
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