export declare const buttonVars: {
    appearances: import("../../utils/key-mirror").KeyMirror<["primary", "secondary", "transparent", "outline"]>;
    sizes: import("../../utils/key-mirror").KeyMirror<["small", "large", "block"]>;
    iconPositions: import("../../utils/key-mirror").KeyMirror<["left", "right", "side"]>;
};