import type { ChannelEntry } from '../common';
export type ChannelChangeKind = 'added' | 'updated' | 'removed' | 'reset';
/**
 * The scope of a change event.
 * - `global`: Change affects all sessions
 * - `session`: Change affects only a specific session
 */
export type ChannelChangeScope = 'global' | 'session';
export type ChannelChangeEvent = {
    kind: ChannelChangeKind;
    /** Whether the change affects all sessions or a specific session */
    changeScope: ChannelChangeScope;
    sessionId?: string;
    relatedRequestId?: string;
    version: number;
    snapshot: readonly ChannelEntry[];
};
type Listener = (e: ChannelChangeEvent) => void;
export declare class ChannelEmitter {
    private listeners;
    on(l: Listener): () => void;
    emit(e: ChannelChangeEvent): void;
}
export {};
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