/** Scoring choices that vary between otherwise standard riichi rulesets. */
export interface Ruleset {
    /** Whether an open all-simples hand receives tanyao. */
    openTanyao: boolean;
    /** Fu awarded to a pair matching both round and seat wind. */
    doubleWindPairFu: 2 | 4;
    /** Fu floor for an open all-run hand with no other fu. */
    openPinfuMinimumFu: 20 | 30;
    /** Promote 4 han 30 fu and 3 han 60 fu to mangan. */
    kiriageMangan: boolean;
    /** Treat 13+ naturally accumulated han as yakuman rather than sanbaiman. */
    kazoeYakuman: boolean;
    /** Permit four matching concealed tiles to count as two chiitoitsu pairs. */
    kansaiChiitoitsu: boolean;
    /** Local single-hand double-yakuman variants. */
    doubleYakuman: {
        daisuushii: boolean;
        kokushi13Wait: boolean;
        suuankouTanki: boolean;
        junseiChuuren: boolean;
    };
    /** Physical red-five availability by suit. */
    akaDora: {
        manzu: number;
        pinzu: number;
        souzu: number;
    };
}
export type RulesetOptions = Omit<Partial<Ruleset>, "akaDora" | "doubleYakuman"> & {
    akaDora?: Partial<Ruleset["akaDora"]>;
    doubleYakuman?: Partial<Ruleset["doubleYakuman"]>;
};
/** The established current behavior, named so callers can select it explicitly. */
export declare const TENHOU_RULESET: Readonly<Ruleset>;
/** Resolve caller overrides without allowing shared default state to be mutated. */
export declare function createRuleset(options?: RulesetOptions): Ruleset;
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