import { SyncSender } from './sync-sender.mjs';
import { Receiver } from './receiver.mjs';
/**
 * An bounded synchronous channel. Values sent into this channel are queued
 * up to the given bound limit with senders able to await until the queue
 * capacity permits additional values.
 */
export declare class SyncChannel<T = any> implements SyncSender<T>, Receiver<T> {
    #private;
    /** Creates a new SyncChannel */
    constructor(bounds?: number);
    /** Async iterator for this channel */
    [Symbol.asyncIterator](): AsyncGenerator<Awaited<Awaited<T> & undefined> | Awaited<Awaited<T> & {}>, void, unknown>;
    /** Sends the given value to this channel. If channel has ended no action. */
    send(value: T): Promise<void>;
    /** Sends the given error to this channel causing the receiver to throw on next(). If channel has ended no action. */
    error(error: Error): Promise<void>;
    /** Ends this channel. */
    end(): Promise<void>;
    /** Returns the next value from this channel or null if EOF. */
    next(): Promise<T | null>;
}