import { NodeBootDriver } from "../core";
import { Action, ParamMetadata } from "@nodeboot/context";
/**
 * Handles action parameter.
 */
export declare class ActionParameterHandler<TServer, TDriver extends NodeBootDriver<TServer>> {
    private readonly driver;
    constructor(driver: TDriver);
    /**
     * Handles action parameter.
     */
    handle(action: Action, param: ParamMetadata): Promise<any>;
    /**
     * Handles non-promise value.
     */
    protected handleValue(value: any, action: Action, param: ParamMetadata): Promise<any>;
    /**
     * Normalizes parameter value.
     */
    protected normalizeParamValue(value: any, param: ParamMetadata): Promise<any>;
    private extractPrimitiveParam;
    /**
     * Parses string value into a JSON object.
     */
    protected parseValue(value: any, paramMetadata: ParamMetadata): Promise<any>;
    /**
     * Perform class-transformation if enabled.
     */
    protected transformValue(value: any, paramMetadata: ParamMetadata): Promise<any>;
    /**
     * Perform class-validation if enabled.
     */
    protected validateValue(value: any, paramMetadata: ParamMetadata): Promise<any>;
}
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