type StepLike = {
    id: string;
    depends?: string[];
};
/**
 * Topological sort of steps by their depends array.
 * Steps with no dependencies come first. Steps that depend on others come after.
 */
export declare function topologicalSort<T extends StepLike>(steps: T[]): T[][];
/**
 * Execute levels sequentially, but steps within a level in parallel.
 */
export declare function executeLevels<T extends StepLike>(levels: T[][], runStep: (step: T) => Promise<void>, onLevelStart?: (level: number) => void): Promise<void>;
export {};
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