import { SupportsEquals } from "./baseTypes.js";
import { FactorUnit } from "./factorUnit.js";
import { Unit } from "./unit.js";
import { Decimal } from "decimal.js";
import { DimensionVector } from "./dimensionVector.js";
/**
 * Class representing a set of FactorUnits and a conversionMultiplier, so the units can be
 * used to replace any other unit of the same dimensionality.
 */
export declare class FactorUnits implements SupportsEquals<FactorUnits> {
    private static readonly EMPTY_FACTOR_UNITS;
    readonly factorUnits: FactorUnit[];
    readonly scaleFactor: Decimal;
    private normalized?;
    private dimensionVector?;
    constructor(factorUnits: FactorUnit[], scaleFactor?: Decimal);
    static ofUnit(unit: Unit): FactorUnits;
    static ofFactorUnitSpecWithScaleFactor(scalar: Decimal, ...factorUnitSpec: (Unit | number)[]): FactorUnits;
    static ofFactorUnitSpec(...factorUnitSpec: (Unit | number)[]): FactorUnits;
    static empty(): FactorUnits;
    /**
     * Returns this ScaledFactorUnits object, raised to the specified power.
     * @param power
     */
    pow(power: number): FactorUnits;
    /**
     *
     * @param other
     */
    combineWith(other: FactorUnits | undefined): FactorUnits;
    /**
     * Returns this ScaledFactorUnits object, with its conversionMultiplier multiplied by the specified value.
     *
     * @param by
     */
    scale(by: Decimal): FactorUnits;
    isRatioOfSameUnits(): boolean;
    reduceExponents(): FactorUnits;
    contractExponents(): FactorUnits;
    hasFactorUnits(): boolean;
    /**
     * Returns true iff this factorUnits object has exactly one factor unit, which has exponent 1.
     */
    isOneOtherUnitWithExponentOne(): boolean;
    normalize(): FactorUnits;
    expand(): FactorUnit[];
    static expandFactors(factorUnits: FactorUnits): FactorUnit[];
    getAllPossibleFactorUnitCombinations(): FactorUnit[][];
    /**
     * Returns a FactorUnits object containing the scaleFactor and the factors in the numerator of
     * this FactorUnits object. Note that any derived units in the numerator are returned without
     * recursive decomposition. For example, for `5.0 * M2-PER-N` a FactorUnit object representing
     * `N` is returned.
     *
     * @return a FactorUnits object representing the scaleFactor and the numerator units of this
     *     unit.
     */
    numerator(): FactorUnits;
    private numeratorFactors;
    /**
     * Returns a FactorUnits object containing the factors in the denominator of this FactorUnits
     * object. Note that any derived units in the denominator are returned without recursive
     * decomposition. For example, for `5.0 * ` a FactorUnit object representing `5.0 * N` is
     * returned.
     *
     * @return a FactorUnits object representing the scaleFactor and the numerator units of this
     *     unit.
     */
    denominator(): FactorUnits;
    getDimensionVector(): DimensionVector;
    private computeDimensionVector;
    private denominatorFactors;
    getLocalname(): string;
    private static isEmptyOrNullish;
    private generateLocalname;
    private static factorUnitLocalname;
    private static permutate;
    private permutateFactorUnitLocalnames;
    generateAllLocalnamePossibilities(): string[];
    equals(other?: FactorUnits): boolean;
    toString(): string;
}
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