import { IterableChanges, IterableChangeRecord, IterableDiffer, IterableDifferFactory, TrackByFunction } from '@angular/core';
export declare class FastIterableDiffer<T> implements IterableDiffer<T>, IterableChanges<T> {
    private trackByFn;
    private current;
    private previous;
    private operations;
    private identityChanges;
    constructor(trackByFn?: TrackByFunction<T> | null);
    diff(collection: T[]): this | null;
    forEachItem(fn: (record: IterableChangeRecord<T>) => void): void;
    forEachOperation(fn: (record: IterableChangeRecord<T>, previousIndex: number | null, currentIndex: number | null) => void): void;
    forEachPreviousItem(fn: (record: IterableChangeRecord<T>) => void): void;
    forEachAddedItem(fn: (record: IterableChangeRecord<T>) => void): void;
    forEachMovedItem(fn: (record: IterableChangeRecord<T>) => void): void;
    forEachRemovedItem(fn: (record: IterableChangeRecord<T>) => void): void;
    forEachIdentityChange(fn: (record: IterableChangeRecord<T>) => void): void;
    check(next: T[]): boolean;
    private reset;
}
export declare class FastIterableDifferFactory implements IterableDifferFactory {
    supports(objects: any): boolean;
    create<T>(trackByFn?: TrackByFunction<T>): IterableDiffer<T>;
}