/**
 * Layout attributes.
 * @enum {String}
 */
declare var Attribute: {
    CONST: string;
    NOTANATTRIBUTE: string;
    VARIABLE: string;
    LEFT: string;
    RIGHT: string;
    TOP: string;
    BOTTOM: string;
    WIDTH: string;
    HEIGHT: string;
    CENTERX: string;
    CENTERY: string;
    /** Used by the extended VFL syntax. */
    ZINDEX: string;
};
export default Attribute;
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