import { GradeBandTypes } from './GradeBands';
export declare type Tuple = [number, number];
export default interface GradeScale {
    isType: (grade: string) => boolean;
    getScore: (grade: string) => number | Tuple;
    getGrade: (score: number | Tuple) => string;
    getGradeBand: (grade: string) => GradeBandTypes;
    displayName: string;
    name: GradeScalesTypes;
    offset: number;
    conversionGroup: ConversionGroupsTypes;
    grades: string[];
}
export declare const GradeScales: {
    readonly AI: "ai";
    readonly AID: "aid";
    readonly WI: "wi";
    readonly VSCALE: "vscale";
    readonly YDS: "yds";
    readonly FONT: "font";
    readonly FRENCH: "french";
    readonly UIAA: "uiaa";
    readonly EWBANK: "ewbank";
    readonly SAXON: "saxon";
    readonly NORWEGIAN: "norwegian";
    readonly BRAZILIAN_CRUX: "brazilian_crux";
};
export declare type GradeScalesTypes = typeof GradeScales[keyof typeof GradeScales];
export declare const ConversionGroups: {
    readonly AID: "aid";
    readonly FREE: "free";
    readonly BOULDERING: "bouldering";
    readonly ICE: "ice";
};
export declare type ConversionGroupsTypes = typeof ConversionGroups[keyof typeof ConversionGroups];
export declare const findScoreRange: (compareFn: any, list: any) => number | Tuple;
export declare function getAvgScore(score: number | Tuple): number;
/**
 * For getting a whole number/integer tuple of a grade which resides between two adjacent grades.
 * Returns an integer tuple, rounded EXCLUSIVELY of the adjacent grade scores.
 * Related discussion: https://github.com/OpenBeta/sandbag/issues/137
 */
export declare const getRoundedScoreTuple: (gradeAverage: number, nextGradeAverage: number) => Tuple;