export declare function unionSorted<T, U, R>(ts: T[], us: U[], comparators: Array<(a: T, b: U) => number>, mergeOperator: (a: T, b: U) => R, tTransformer: (t: T) => R, uTransformer: (u: U) => R): R[];
export declare function mergeSorted<T, U, R>(ts: T[], us: U[], comparators: Array<(a: T, b: U) => number>, tTransformer: (t: T) => R, uTransformer: (u: U) => R): R[];
export declare function intersectionSorted<T, U, R>(ts: T[], us: U[], comparators: Array<(a: T, b: U) => number>, mergeOperator: (a: T, b: U) => R): R[];
export declare function differenceSorted<T, U>(ts: T[], us: U[], comparators: Array<(a: T, b: U) => number>): T[];