export interface OrphanWidowConfig {
    avoidOrphans: boolean;
    orphanMinLines: number;
    orphanPenalty: number;
    avoidWidows: boolean;
    widowMinLines: number;
    widowPenalty: number;
    slackWeight: number;
}
export interface SplitChoice {
    /** Number of lines to place in the current column (0 means push the whole
     *  paragraph to the next column; equals totalLines means keep it here). */
    splitAt: number;
    /** Total demerit assigned to the chosen candidate (for diagnostics/tests). */
    demerit: number;
}
export declare const DEFAULT_ORPHAN_PENALTY = 1000;
export declare const DEFAULT_WIDOW_PENALTY = 1000;
export declare const DEFAULT_SLACK_WEIGHT = 10;
/**
 * Score each candidate split `k` (place `k` lines in the current column, the
 * rest in the next) and return the one with minimum total demerit.
 *
 * Soft constraints — penalty-based, not hard forbids. If the only way to honor
 * both orphan and widow constraints is unreasonable, the optimizer picks the
 * least-bad candidate.
 *
 * Pure function — no I/O, deterministic, trivially unit-testable.
 */
export declare function chooseParagraphSplit(totalLines: number, spaceRemaining: number, cfg: OrphanWidowConfig): SplitChoice;
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