/** Package aliases remain provenance; a released Reward is one scoring choice. */
export type DatasetGraderPin = {
    id: string;
    version: string;
    contentHash: string;
    feedbackKey: string;
    release?: {
        id: string;
        revision: number;
        contentHash: string;
    } | null;
};
export declare function datasetGraderIdentity(pin: DatasetGraderPin): string;
export declare function groupDatasetGraders<T extends DatasetGraderPin>(pins: readonly T[]): Array<{
    key: string;
    grader: T;
    aliases: T[];
}>;
/** Validate selected choices, rather than silently choosing between different
 * graders that would write the same feedback field. Never modifies package pins. */
export declare function canonicalDatasetGraderSelection<T extends DatasetGraderPin & {
    mappings?: unknown;
}>(pins: readonly T[]): T[];
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