import type { Context } from './index.ts';
import type { ContextInternals } from './internals.ts';
import type { ContextOperationRequest } from './operation-request.ts';
export declare function speculate<TResult>(context: Context, internals: ContextInternals, execute: (context: Context) => Generator<ContextOperationRequest, TResult, unknown> | AsyncGenerator<unknown, TResult, unknown>): Generator<ContextOperationRequest, TResult, unknown>;