import { DryContextType, ServerContext } from '../../context';
declare type ContextType = Required<DryContextType>;
/**
 * Load values sent by the server at initialization.
 *
 * @param context - The server context.
 * @param a - The option to load.
 * @returns The value.
 */
export declare function preload<A extends keyof ContextType>(context: ServerContext | undefined, a: A): ContextType[A] | undefined;
/**
 * Load values sent by the server at initialization.
 *
 * @param context - The server context.
 * @param a - The option to load.
 * @param b - The sub-option if any.
 * @returns The value.
 */
export declare function preload<A extends keyof ContextType, B extends keyof ContextType[A]>(context: ServerContext | undefined, a: A, b: B): ContextType[A][B] | undefined;
export {};