/**
 * Type-safe Map wrapper for request-scoped context.
 * Flows from auth middleware through generate/stream/tools/memory.
 * Reserved keys (prefixed neurolink__) cannot be overridden by client code.
 */
export declare const NEUROLINK_RESOURCE_ID_KEY = "neurolink__resourceId";
export declare const NEUROLINK_THREAD_ID_KEY = "neurolink__threadId";
export declare class RequestContext<T extends Record<string, unknown> = Record<string, unknown>> {
    private registry;
    constructor(initial?: Partial<T> | [string, unknown][]);
    set<K extends string>(key: K, value: unknown): void;
    get<K extends string>(key: K): unknown;
    has(key: string): boolean;
    delete(key: string): boolean;
    get size(): number;
    /**
     * Merge client-provided values, but SKIP reserved keys that are already set.
     * This prevents clients from overriding auth middleware values.
     */
    mergeClientContext(clientContext: Record<string, unknown>): void;
    toJSON(): Record<string, unknown>;
    private isSerializable;
}