export declare const flipInX: ({
    easing: string;
    offset: number;
    opacity: string;
    transform: string;
} | {
    easing: string;
    offset: number;
    transform: string;
    opacity?: undefined;
} | {
    offset: number;
    opacity: string;
    transform: string;
    easing?: undefined;
} | {
    offset: number;
    transform: string;
    easing?: undefined;
    opacity?: undefined;
})[];
