import type { TractorCard, TractorEffectiveSuit, TractorFollowObligation, TractorFollowValidation, TractorLeadAnalysis, TractorLeadPattern, TractorLevel, TractorLevelAdvance, TractorHandSettlement, TractorHandSettlementInput, TractorRunValidation, TractorTrickPlay, TractorTrickWinner, TractorTopSetResolution, TractorTrumpDeclaration, TractorTrumpDeclarationAnalysis, TractorTrumpOverrideValidation, TractorTrump } from './types.js';
/** Return the Pagat point value: five=5, ten/king=10, everything else=0. */
export declare function tractorCardPoints(card: Readonly<TractorCard>): number;
/** Return the printed-face key used to decide whether two physical cards form a pair. */
export declare function tractorFaceKey(card: Readonly<TractorCard>): string;
/** Map level cards and Jokers into the effective trump suit for this hand. */
export declare function tractorEffectiveSuit(card: Readonly<TractorCard>, trump: Readonly<TractorTrump>): TractorEffectiveSuit;
/**
 * Return strength within a card's effective suit. Higher wins and equal
 * strength preserves the earlier play. Do not compare unrelated non-trump suits.
 */
export declare function tractorStrength(card: Readonly<TractorCard>, trump: Readonly<TractorTrump>): number;
/** True only for two distinct physical copies with the same printed face. */
export declare function isTractorPair(cards: readonly [Readonly<TractorCard>, Readonly<TractorCard>]): boolean;
/** Validate an unordered selection as a two-or-more-pair consecutive Tractor. */
export declare function analyzeTractorRun(cards: readonly Readonly<TractorCard>[], trump: Readonly<TractorTrump>): TractorRunValidation;
/**
 * Interpret a same-effective-suit lead without consulting hidden opponent
 * hands. Non-pair/non-Tractor collections are top-set attempts whose success
 * must be resolved by the authoritative rules package.
 */
export declare function analyzeTractorLead(cards: readonly Readonly<TractorCard>[], trump: Readonly<TractorTrump>): TractorLeadAnalysis;
/** Compute the maximum same-suit and pair structure this follower must supply. */
export declare function getTractorFollowObligation(lead: Readonly<TractorLeadPattern>, hand: readonly Readonly<TractorCard>[], trump: Readonly<TractorTrump>): TractorFollowObligation;
/** Validate one selected follow against the player's complete current hand. */
export declare function validateTractorFollow(lead: Readonly<TractorLeadPattern>, hand: readonly Readonly<TractorCard>[], selected: readonly Readonly<TractorCard>[], trump: Readonly<TractorTrump>): TractorFollowValidation;
/**
 * Resolve already-validated plays in table order. Equal strength preserves the
 * earlier play. Follow legality remains the caller's responsibility.
 */
export declare function determineTractorTrickWinner(lead: Readonly<TractorLeadPattern>, plays: readonly Readonly<TractorTrickPlay>[], trump: Readonly<TractorTrump>): TractorTrickWinner;
/**
 * Resolve hidden top-set eligibility without exposing follower hands.
 *
 * `followersInPlayOrder` must begin with the seat after the leader. The first
 * follower able to beat any component becomes the challenger. Their weakest
 * beatable component is forced; equal strengths use the stable face key.
 */
export declare function resolveTractorTopSetAttempt(attemptedCards: readonly Readonly<TractorCard>[], followersInPlayOrder: readonly {
    readonly playerId: string;
    readonly hand: readonly Readonly<TractorCard>[];
}[], trump: Readonly<TractorTrump>): TractorTopSetResolution;
/** Pagat bottom-card multiplier: twice the number of cards in the final lead. */
export declare function tractorKittyMultiplier(lastLeadCardCount: number): number;
/** Settle one hand using the Pagat 80-point and 40-point advancement table. */
export declare function settleTractorHand(input: Readonly<TractorHandSettlementInput>): TractorHandSettlement;
/** Advance through 2..Ace; crossing above Ace wins the complete match. */
export declare function advanceTractorLevel(level: TractorLevel, steps: number): TractorLevelAdvance;
/** Interpret exactly one Pagat trump declaration from cards currently held. */
export declare function analyzeTractorTrumpDeclaration(playerId: string, cards: readonly Readonly<TractorCard>[], levelRank: TractorLevel): TractorTrumpDeclarationAnalysis;
/** Check whether a later public declaration supersedes the current one. */
export declare function validateTractorTrumpOverride(current: Readonly<TractorTrumpDeclaration> | null, candidate: Readonly<TractorTrumpDeclaration>): TractorTrumpOverrideValidation;
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