import type { InputType } from "@hatchet-dev/typescript-sdk";
import type { StandardSchemaV1 } from "@standard-schema/spec";
/**
 * Interface for classes that provide a schema for their input.
 */
export interface InputSchemaProvider<T> {
    /**
     * Returns the schema for the input of the host.
     * If undefined, the input is not validated.
     */
    inputSchema: () => StandardSchemaV1<InputType, T> | undefined;
}
/**
 * Marker class for Hatchet workflow host classes.
 */
export declare abstract class WorkflowHost<I> implements InputSchemaProvider<I> {
    readonly inputSchema: InputSchemaProvider<I>["inputSchema"];
    readonly __workflow_host_brand: void;
    readonly __workflow_host_input: I;
    /**
     * Constructor for the WorkflowHost class.
     *
     * @param inputSchema
     * @protected
     */
    protected constructor(inputSchema: InputSchemaProvider<I>["inputSchema"]);
}
/**
 * Marker class for Hatchet task host classes.
 */
export declare abstract class TaskHost<I> implements InputSchemaProvider<I> {
    readonly inputSchema: InputSchemaProvider<I>["inputSchema"];
    readonly __task_host_brand: void;
    readonly __task_host_input: I;
    /**
     * Constructor for the TaskHost class.
     *
     * @param inputSchema
     * @protected
     */
    protected constructor(inputSchema: InputSchemaProvider<I>["inputSchema"]);
}
/**
 * Creates a new WorkflowHost class with the provided input schema.
 *
 * @param input The input schema.
 */
export declare function workflowHost<I>(input?: ReturnType<InputSchemaProvider<I>["inputSchema"]>): {
    new (): {
        readonly __workflow_host_brand: void;
        readonly __workflow_host_input: I;
        readonly inputSchema: () => StandardSchemaV1<import("@hatchet-dev/typescript-sdk").JsonObject, I> | undefined;
    };
};
/**
 * Creates a new TaskHost class with the provided input schema.
 *
 * @param input The input schema.
 */
export declare function taskHost<I>(input?: ReturnType<InputSchemaProvider<I>["inputSchema"]>): {
    new (): {
        readonly __task_host_brand: void;
        readonly __task_host_input: I;
        readonly inputSchema: () => StandardSchemaV1<import("@hatchet-dev/typescript-sdk").JsonObject, I> | undefined;
    };
};