import type { ActivityFunction } from './interfaces';
import type { PayloadTypeInfo } from './type-info';
/**
 * Static metadata attached to an Activity function.
 *
 * @experimental
 */
export interface ActivityDefinitionOptions {
    /** Type information used to decode Activity arguments and encode its result. */
    typeInfo?: PayloadTypeInfo;
}
type ActivityKeys<A> = {
    [K in keyof A & string]: A[K] extends ActivityFunction ? K : never;
}[keyof A & string];
/**
 * Type information keyed only by Activity-valued properties of `A`.
 *
 * @experimental
 */
export type ActivityTypeInfoMap<A> = Partial<Record<ActivityKeys<A>, PayloadTypeInfo>>;
/** @internal */
export interface ActivityFunctionWithOptions<Args extends any[] = any[], ReturnType = any> extends ActivityFunction<Args, ReturnType> {
    activityDefinitionOptions: ActivityDefinitionOptions;
}
/** @internal */
export declare function isActivityFunctionWithOptions(value: unknown): value is ActivityFunctionWithOptions<any[], any>;
export {};