/**
 * @see {@link https://semver.org}
 * @class Keppo
 * @private {number} major
 * @private {number} minor
 * @private {number} patch
 * @private {boolean} strict
 * @private {string} label
 */
export class Keppo {
    /**
     * @static
     * A static method that checks whether the provided String is a valid SemVer version number. Useful for checking whether a version is valid before calling {@link setVersion()}.
     * @param {string} version A String representing a SemVer version number
     * @param {boolean} [isStrict=true] A Boolean representing whether the strict mode is enabled, defaults to **true** and is not inferred from this instance's `strict` property.
     * @returns {boolean}
     */
    static isValid(version: string, isStrict?: boolean | undefined): boolean;
    /**
     * Creates a Keppo instance.
     * @constructor
     * @param {number|string} major Major version number or a valid SemVer version string - other parameters are ignored in this case.
     * @param {number} [minor=0] Minor version number.
     * @param {number} [patch=0] Patch version number.
     * @param {boolean} [strict=true] Strict mode.
     * @param {string} [label=''] Label for the version, no need to prefix with a dash.
     * @throws {TypeError|Error} Throws an exception if any of the passed parameters are not valid.
     */
    constructor(major?: number | string, minor?: number | undefined, patch?: number | undefined, strict?: boolean | undefined, label?: string | undefined);
    strict: boolean;
    patch: number;
    minor: number;
    major: number;
    label: string;
    /**
     * Parses the provided string as a SemVer version.
     *
     * See also {@link setVersion()}.
     * @param {string} version A valid SemVer version represented as a string, e.g. `"1.2.3"`, `"v1.5.3"`, `"2.3.4-alpha"`, `"v2.4.6-beta"`.
     * @throws {TypeError|Error} Throws an exception if the passed parameter is not valid.
     * @returns {Keppo} Returns a new instance of `Keppo` with the parsed version.
     */
    parse(version: string): Keppo;
    /**
     * Sets the strict mode for the SemVer version, i.e. allow `v` as a prefix for SemVer, e.g. `v1.0.0`. By default, strict mode is `true`.
     * @param {boolean} [isStrict=true]
     * @returns {Keppo}
     */
    isStrict(isStrict?: boolean | undefined): Keppo;
    /**
     * Increases the major version number for the provided value.
     * @param {number} [major=1] The major version number to increase by, defaults to `1`.
     * @throws {Error} Throws an exception if the passed parameter is not valid.
     * @returns {Keppo}
     */
    increaseMajor(major?: number | undefined): Keppo;
    /**
     * Increases the minor version number for the provided value.
     * @param {number} [minor=1] The minor version number to increase by, defaults to `1`.
     * @throws {Error} Throws an exception if the passed parameter is not valid.
     * @returns {Keppo}
     */
    increaseMinor(minor?: number | undefined): Keppo;
    /**
     * Increases the patch version number for the provided value.
     * @param {number} [patch=1] The patch version number to increase by, defaults to `1`.
     * @throws {Error} Throws an exception if the passed parameter is not valid.
     * @returns {Keppo}
     */
    increasePatch(patch?: number | undefined): Keppo;
    /**
     * Decreases the major version number for the provided value.
     * @param {number} [major=1] The major version number to decrease by, defaults to `1`.
     * @throws {Error} Throws an exception if the passed parameter is not valid.
     * @returns {Keppo}
     */
    decreaseMajor(major?: number | undefined): Keppo;
    /**
     * Decreases the minor version number for the provided value.
     * @param {number} [minor=1] The minor version number to decrease by, defaults to `1`.
     * @throws {Error} Throws an exception if the passed parameter is not valid.
     * @returns {Keppo}
     */
    decreaseMinor(minor?: number | undefined): Keppo;
    /**
     * Decrease the patch version number for the provided value.
     * @param {number} [patch=1] The patch version number to decrease by, defaults to `1`.
     * @throws {Error} Throws an exception if the passed parameter is not valid.
     * @returns {Keppo}
     */
    decreasePatch(patch?: number | undefined): Keppo;
    /**
     * Sets the major version number for the current Keppo instance.
     * @param {number|string} major The major version number, either as a number or as a string.
     * @throws {Error} Throws an exception if the passed parameter is not valid.
     * @returns  {Keppo}
     */
    setMajor(major: number | string): Keppo;
    /**
     * Sets the minor version number for the current Keppo instance.
     * @param {number|string} minor The minor version number, either as a number or as a string.
     * @throws {Error} Throws an exception if the passed parameter is not valid.
     * @returns  {Keppo}
     */
    setMinor(minor: number | string): Keppo;
    /**
     * Sets the patch version number for the current Keppo instance.
     * @param {number|string} patch The patch version number, either as a number or as a string.
     * @throws {Error} Throws an exception if the passed parameter is not valid.
     * @returns  {Keppo}
     */
    setPatch(patch: number | string): Keppo;
    /**
     * Sets the version label for the current Keppo instance. No need to prefix with a dash "`-`", i.e. "`alpha`" and its output would be `0.1.0-alpha`.
     * @param {string} label
     * @throws {Error} Throws an exception if the passed parameter is not valid.
     * @returns {Keppo}
     */
    setLabel(label: string): Keppo;
    /**
     * Compares the current `Keppo` SemVer-compatible version with a provided one. The passed argument can either be another instance of `Keppo` or a valid SemVer string.
     * @param {Keppo|string} version
     * @throws {Error} Throws an exception if the passed parameter is not valid or the passed parameter is not a valid SemVer version.
     * @returns {Number} A value defined as:
     * - `-1` if the current instance version is less than the provided version,
     * - `0` if the compared versions are equal,
     * - `1` if the current instance version is greater than the provided version.
     */
    compare(version: Keppo | string): number;
    /**
     * Prints to console the String representation of the current `Keppo` object.
     * @returns {void}
     */
    output(): void;
    /**
     * Sets the current Keppo version. The passed value must be a valid SemVer string. This will replace all the previous version information.
     *
     * See also {@link parse()}.
     * @param {string} version
     * @returns {Keppo}
     * @throws {TypeError|Error} Throws an exception if the passed parameter is not valid or the passed parameter is not a valid SemVer version.
     */
    setVersion(version: string): Keppo;
    /**
     * Formats the current `Keppo` object as a String.
     * @returns {string}
     */
    toString(): string;
    /**
     * Checks whether this instance's major version can be safely increased by the given value.
     *
     * Read more about Integer safety on {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isSafeInteger MDN}.
     * @param {number} [major=1] The value to increase by
     * @returns {boolean}
     */
    canIncreaseMajor(major?: number | undefined): boolean;
    /**
     * Checks whether a minor version can be safely increased by the given value.
     *
     * Read more about Integer safety on {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isSafeInteger MDN}.
     * @param {number} [minor=1] The value to increase by
     * @returns {boolean}
     */
    canIncreaseMinor(minor?: number | undefined): boolean;
    /**
     * Checks whether a patch version can be safely increased by the given value.
     *
     * Read more about Integer safety on {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isSafeInteger MDN}.
     * @param {number} [patch=1] The value to increase by
     * @returns {boolean}
     */
    canIncreasePatch(patch?: number | undefined): boolean;
    /**
     * Returns the maximum possible value that can be used to increase the major version number.
     *
     * Read more about Integer safety on {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isSafeInteger MDN}.
     * @returns {number}
     */
    maxIncreaseMajor(): number;
    /**
     * Returns the maximum possible value that can be used to increase the minor version number.
     *
     * Read more about Integer safety on {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isSafeInteger MDN}.
     * @returns {number}
     */
    maxIncreaseMinor(): number;
    /**
     * Returns the maximum possible value that can be used to increase the patch version number.
     *
     * Read more about Integer safety on {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isSafeInteger MDN}.
     * @returns {number}
     */
    maxIncreasePatch(): number;
}