/**
 * standard keyboard constants
 */
export declare const KEY: {
    BACKSPACE: number;
    TAB: number;
    ENTER: number;
    SHIFT: number;
    CTRL: number;
    ALT: number;
    PAUSE: number;
    CAPS_LOCK: number;
    ESC: number;
    SPACE: number;
    PAGE_UP: number;
    PAGE_DOWN: number;
    END: number;
    HOME: number;
    LEFT: number;
    UP: number;
    RIGHT: number;
    DOWN: number;
    PRINT_SCREEN: number;
    INSERT: number;
    DELETE: number;
    NUM0: number;
    NUM1: number;
    NUM2: number;
    NUM3: number;
    NUM4: number;
    NUM5: number;
    NUM6: number;
    NUM7: number;
    NUM8: number;
    NUM9: number;
    A: number;
    B: number;
    C: number;
    D: number;
    E: number;
    F: number;
    G: number;
    H: number;
    I: number;
    J: number;
    K: number;
    L: number;
    M: number;
    N: number;
    O: number;
    P: number;
    Q: number;
    R: number;
    S: number;
    T: number;
    U: number;
    V: number;
    W: number;
    X: number;
    Y: number;
    Z: number;
    WINDOW_KEY: number;
    NUMPAD0: number;
    NUMPAD1: number;
    NUMPAD2: number;
    NUMPAD3: number;
    NUMPAD4: number;
    NUMPAD5: number;
    NUMPAD6: number;
    NUMPAD7: number;
    NUMPAD8: number;
    NUMPAD9: number;
    MULTIPLY: number;
    ADD: number;
    SUBSTRACT: number;
    DECIMAL: number;
    DIVIDE: number;
    F1: number;
    F2: number;
    F3: number;
    F4: number;
    F5: number;
    F6: number;
    F7: number;
    F8: number;
    F9: number;
    F10: number;
    F11: number;
    F12: number;
    TILDE: number;
    NUM_LOCK: number;
    SCROLL_LOCK: number;
    SEMICOLON: number;
    PLUS: number;
    COMMA: number;
    MINUS: number;
    PERIOD: number;
    FORWAND_SLASH: number;
    GRAVE_ACCENT: number;
    OPEN_BRACKET: number;
    BACK_SLASH: number;
    CLOSE_BRACKET: number;
    SINGLE_QUOTE: number;
};
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