import { type JsonRpcId } from './json-rpc-protocol.ts';
import type { Cursor, EventSelector } from './workflow-event-feed.ts';
type JsonRpcErrorPayload = {
    readonly code: number;
    readonly message: string;
    readonly data?: Record<string, unknown>;
};
export type SubscribeParamsValidation = {
    readonly ok: true;
    readonly workflowId: string;
    readonly selector: EventSelector;
    readonly fromCursor: Cursor | undefined;
} | {
    readonly ok: false;
    readonly error: JsonRpcErrorPayload;
};
export type MessageFrameValidation = {
    readonly ok: false;
    readonly error: JsonRpcErrorPayload;
    readonly id: null;
} | {
    readonly ok: true;
    readonly parsed: Record<string, unknown>;
    readonly method: unknown;
    readonly id: JsonRpcId | undefined;
    readonly params: Record<string, unknown> | undefined;
    readonly hasRequestId: boolean;
    readonly rawId: unknown;
};
export declare function validateSubscribeParams(params: Record<string, unknown> | undefined): SubscribeParamsValidation;
export declare function validateMessageFrame(frame: string, maxFrameBytes: number): MessageFrameValidation;
export declare function validateSessionPrimitiveFrame(frame: Extract<MessageFrameValidation, {
    ok: true;
}>): {
    readonly error: JsonRpcErrorPayload;
    readonly id: JsonRpcId | null;
} | null;
export {};