export declare function IsArray(value: unknown): value is unknown[];
export declare function IsString(value: unknown): value is string;
export declare function IsEqual(left: unknown, right: unknown): boolean;
export declare function TakeLeft<T, True extends (left: T, right: T[]) => unknown, False extends () => unknown>(array: T[], true_: True, false_: False): ReturnType<True> | ReturnType<False>;