export interface ExactMergeBackfillOptions {
    dryRun?: boolean;
}
export interface ExactMergeBackfillResult {
    groups: number;
    merged: number;
    incomplete: number;
    skipped: number;
}
export declare function backfillExactDuplicateCanonicals(opts?: ExactMergeBackfillOptions): Promise<ExactMergeBackfillResult>;
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