import type { ISink, ITime } from '../stream/index.js';
export declare function tryEvent<T>(sink: ISink<T>, time: ITime, value: T): void;
export declare function tryEnd(sink: ISink<unknown>, time: ITime): void;
/**
 * Immutably append an element to an array
 * Optimized for small arrays (common case for multicast)
 */
export declare function append<T>(array: readonly T[], element: T): readonly T[];
/**
 * Immutably remove an element at index from an array
 * Optimized for small arrays (common case for multicast)
 */
export declare function remove<T>(array: readonly T[], index: number): readonly T[];