import type { CommittedPageOperation, PageOperationRequest, PageSessionSnapshot } from './protocol.js';
import type { AnnotationOperationRequest, AnnotationPreview, AnnotationSessionSnapshot, CommittedAnnotationOperation } from './annotation-protocol.js';
import type { CommittedFormOperation, FormOperationRequest, FormSessionSnapshot } from './form-protocol.js';
/** Messages accepted from a browser client by the reference relay. */
export type ClientRelayMessage = {
    readonly type: 'session.join';
    readonly sessionId: string;
    readonly memberToken?: string;
    readonly actorId?: string;
    readonly displayName?: string;
} | {
    readonly type: 'session.approve';
    readonly sessionId: string;
    readonly requestId: string;
} | {
    readonly type: 'session.reject';
    readonly sessionId: string;
    readonly requestId: string;
} | {
    readonly type: 'page.operation';
    readonly sessionId: string;
    readonly request: PageOperationRequest;
} | {
    readonly type: 'annotation.operation';
    readonly sessionId: string;
    readonly request: AnnotationOperationRequest;
} | {
    readonly type: 'annotation.preview';
    readonly sessionId: string;
    readonly preview: AnnotationPreview;
} | {
    readonly type: 'form.operation';
    readonly sessionId: string;
    readonly request: FormOperationRequest;
};
/** Snapshots, commits, and structured errors emitted by the reference relay. */
export type ServerRelayMessage = {
    readonly type: 'session.snapshot';
    readonly sessionId: string;
    readonly snapshot: PageSessionSnapshot;
} | {
    readonly type: 'annotation.snapshot';
    readonly sessionId: string;
    readonly snapshot: AnnotationSessionSnapshot;
} | {
    readonly type: 'form.snapshot';
    readonly sessionId: string;
    readonly snapshot: FormSessionSnapshot;
} | {
    readonly type: 'session.presence';
    readonly sessionId: string;
    readonly connectedCount: number;
} | {
    readonly type: 'page.committed';
    readonly sessionId: string;
    readonly committed: CommittedPageOperation;
} | {
    readonly type: 'annotation.committed';
    readonly sessionId: string;
    readonly committed: CommittedAnnotationOperation;
} | {
    readonly type: 'annotation.preview';
    readonly sessionId: string;
    readonly preview: AnnotationPreview;
} | {
    readonly type: 'form.committed';
    readonly sessionId: string;
    readonly committed: CommittedFormOperation;
} | {
    readonly type: 'session.join.pending';
    readonly sessionId: string;
    readonly requestId: string;
} | {
    readonly type: 'session.join.request';
    readonly sessionId: string;
    readonly requestId: string;
    readonly actorId: string;
    readonly displayName: string;
} | {
    readonly type: 'session.join.approved';
    readonly sessionId: string;
    readonly requestId: string;
    readonly memberToken: string;
} | {
    readonly type: 'session.join.rejected';
    readonly sessionId: string;
    readonly requestId: string;
    readonly retryAfterMs: number;
} | {
    readonly type: 'session.join.resolved';
    readonly sessionId: string;
    readonly requestId: string;
    readonly decision: 'approved' | 'rejected' | 'cancelled';
} | {
    readonly type: 'operation.rejected';
    readonly sessionId?: string;
    readonly operationId?: string;
    readonly code: string;
    readonly message: string;
    readonly currentRevision?: number;
};
/**
 * Parses and validates one untrusted client WebSocket payload.
 * @throws `Error` for malformed JSON, envelopes, or operations.
 * @param json - The JSON value to parse.
 * @returns The resulting ClientRelayMessage.
 *
 */
export declare function parseClientRelayMessage(json: string): ClientRelayMessage;
/**
 * Parses and validates one untrusted relay payload before changing client state.
 * @throws `Error` for malformed JSON, snapshots, commits, or errors.
 * @param json - The JSON value to parse.
 * @returns The resulting ServerRelayMessage.
 *
 */
export declare function parseServerRelayMessage(json: string): ServerRelayMessage;
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