export interface IEqualityComparer<T> {
    Equals(x: T, y: T): boolean;
    GetHashCode(obj: T): number;
}
export declare abstract class EqualityComparer<T> implements IEqualityComparer<T> {
    abstract Equals(x: T, y: T): boolean;
    GetHashCode(obj: T): number;
    static Default<T>(): EqualityComparer<T>;
}