import type { Artifact, ArtifactItem, Run, ValidationResult, WorkflowStage, WorkflowTemplate } from './types.js';
export declare function validateWorkflow(def: WorkflowTemplate): ValidationResult;
export declare function computeStaleStageIds(run: Run, mutatedArtifactNames: string[]): string[];
export declare function persistedArtifactItem(item: ArtifactItem): ArtifactItem;
export declare function persistedArtifact(artifact: Artifact): Artifact;
export declare function persistedRun(run: Run): Run;
export interface WalkStagesOptions {
    includeBatchItemStage?: boolean;
}
export declare function walkStages(stages: WorkflowStage[], opts?: WalkStagesOptions): Generator<WorkflowStage>;
export declare function getFlatWorkflowStages(stages: WorkflowStage[]): WorkflowStage[];
export declare function getCurrentRunStage(run: Run): WorkflowStage | undefined;
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