import { Source, Subscriber, Subscription } from "../_core";
import { Transaction } from "../_tx";
export interface Indexed<T> {
    idx: number;
    val: T;
}
export interface IndexedEndSubscriber<T> {
    iend(tx: Transaction, idx: number, source: IndexedSource<T>): void;
}
export declare class IndexedSource<T> implements Source<Indexed<T>>, Subscription {
    private sources;
    readonly weight: number;
    private ies;
    private subs;
    constructor(sources: Array<Source<T>>);
    activate(initialNeeded: boolean): void;
    size(): number;
    setEndSubscriber(ies: IndexedEndSubscriber<T>): void;
    subscribe(subscriber: Subscriber<Indexed<T>>, order: number): Subscription;
    disposeIdx(idx: number): void;
    dispose(): void;
    reorder(order: number): void;
}