import { type ArvoContract, type ArvoEvent } from 'arvo-core';
import type IArvoEventHandler from '../IArvoEventHandler';
import type { ArvoEventHandlerOpenTelemetryOptions, ArvoEventHandlerOtelSpanOptions } from '../types';
import type { ArvoEventHandlerFunction, ArvoEventHandlerParam } from './types';
/**
 * The foundational component for building stateless,
 * contract-bound services in the Arvo system.
 */
export default class ArvoEventHandler<TContract extends ArvoContract> implements IArvoEventHandler {
    /** Contract instance that defines the event schema and validation rules */
    readonly contract: TContract;
    /** Computational cost metric associated with event handling operations */
    readonly executionunits: number;
    /** OpenTelemetry configuration for event handling spans */
    readonly spanOptions: ArvoEventHandlerOtelSpanOptions;
    /** Version-specific event handler implementation map */
    readonly handler: ArvoEventHandlerFunction<TContract>;
    /** The source identifier for events produced by this handler */
    get source(): TContract['type'];
    /** Domains for routing events */
    readonly defaultEventEmissionDomains: Required<NonNullable<ArvoEventHandlerParam<TContract>['defaultEventEmissionDomains']>>;
    /** The contract-defined domain for the handler */
    get domain(): string | null;
    constructor(param: ArvoEventHandlerParam<TContract>);
    /**
     * Processes an incoming event according to the handler's contract specifications. This method
     * handles the complete lifecycle of event processing including validation, execution, error
     * handling, and multi-domain event broadcasting, while maintaining detailed telemetry through OpenTelemetry.
     *
     * @throws {ContractViolation} when input or output event data violates the contract schema,
     *                             or when event emission fails due to invalid data
     * @throws {ConfigViolation} when event type doesn't match contract type, when the
     *                           contract version expected by the event does not exist
     *                           in handler configuration, or when contract URI mismatch occurs
     * @throws {ExecutionViolation} for explicitly handled runtime errors that should bubble up
     */
    execute(event: ArvoEvent, opentelemetry?: ArvoEventHandlerOpenTelemetryOptions): Promise<{
        events: ArvoEvent[];
    }>;
    /**
     * Provides access to the system error event schema configuration.
     */
    get systemErrorSchema(): import("arvo-core").ArvoContractRecord<`sys.${string}.error`, import("zod").ZodObject<{
        errorName: import("zod").ZodString;
        errorMessage: import("zod").ZodString;
        errorStack: import("zod").ZodNullable<import("zod").ZodString>;
    }, "strip", import("zod").ZodTypeAny, {
        errorName: string;
        errorMessage: string;
        errorStack: string | null;
    }, {
        errorName: string;
        errorMessage: string;
        errorStack: string | null;
    }>>;
}