import { type CloudFormationClient } from "@aws-sdk/client-cloudformation";
import { type Result } from "@fjall/generator";
/**
 * Activate trusted access for CloudFormation StackSets.
 * Idempotent — calling when already activated is a no-op.
 */
export declare function activateTrustedAccess(client: CloudFormationClient, abortSignal?: AbortSignal): Promise<Result<void>>;