import { TransactionSpec } from "./internal/service-spec.js";
import { ServiceContext } from "./service.js";
export interface TransactionContext {
    /**
     *Information about the containing service.
     */
    service: Omit<ServiceContext, "serviceUrl">;
}
export interface TransactionFunction<Input, Output> {
    (input: Input, context: TransactionContext): Promise<Output> | Output;
}
export interface Transaction<Name extends string = string, Input = any, Output = any> extends TransactionSpec<Name> {
    kind: "Transaction";
    handler: TransactionFunction<Input, Output>;
    (input: Input): Promise<Awaited<Output>>;
}
export type TransactionInput<T extends Transaction> = T extends Transaction<any, infer Input> ? Input : never;
export type TransactionOutput<T extends Transaction> = T extends Transaction<any, any, infer Output> ? Output : never;
export declare function transaction<Name extends string, Input, Output>(name: Name, handler: TransactionFunction<Input, Output>): Transaction<Name, Input, Output>;
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