import { NamespacedPrimaryIndexOptions, AnonymousPrimaryIndexOptions } from './options';
import { BaseIndex } from './base';
export declare class AnonymousPrimaryIndex<T = any> extends BaseIndex<T> {
    readonly options: AnonymousPrimaryIndexOptions<T>;
    constructor(options?: AnonymousPrimaryIndexOptions<T>);
}
export declare class NamespacedPrimaryIndex<T = any> extends BaseIndex<T> {
    readonly options: NamespacedPrimaryIndexOptions<T>;
    constructor(options: NamespacedPrimaryIndexOptions<T>);
}
export declare type PrimaryIndex<T = any> = NamespacedPrimaryIndex<T> | AnonymousPrimaryIndex<T>;
export declare function isPrimary<T>(index: BaseIndex<T>): index is PrimaryIndex<T>;