import { IEqualityComparer } from './IEqualityComparer';
/**
 * Equality comparer that tests equality using a given predicate function.
 */
export declare class PredicateEqualityComparer<T> implements IEqualityComparer<T> {
    private readonly _predicate;
    constructor(_predicate: (a: T, b: T) => boolean);
    equals(a: T, b: T): boolean;
}