import { ReleaseType } from 'semver';
/**
 * Determines whether the changelog should be updated based on the provided release type and optional tag name.
 *
 * The changelog is updated if:
 * - The `releaseType` exists in `releaseTypesToUpdateChangelogList` and the `tagName` exists in `tagNamesToUpdateChangelog`, or
 * - The `releaseType` is considered valid according to the `valid` function.
 *
 * @param releaseType - The type of the release to evaluate.
 * @param tagName - (Optional) The tag name associated with the release.
 * @returns `true` if the changelog should be updated, otherwise `false`.
 */
export declare const shouldUpdateChangelog: (releaseType: ReleaseType, tagName?: string) => string | true | null;
/**
 * Validates and determines the next version for a release based on the current version, release type, and optional tag name.
 *
 * - If `releaseType` is a valid semantic version, checks that it is greater than `oldVersion`.
 * - If `releaseType` is a standard release type (e.g., "major", "minor", "patch"), validates it against supported types.
 * - Optionally validates the provided `tagName` against supported tag names.
 * - Throws an error with a descriptive message if validation fails.
 *
 * @param oldVersion - The current version string (semver).
 * @param releaseType - The release type or a specific version string.
 * @param tagName - (Optional) The release tag to validate.
 * @returns A tuple containing the old version and the new version if a specific version is provided.
 * @throws {Error} If the new version is not greater than the old version, or if the release type or tag name is invalid.
 */
export declare const validateVersion: (oldVersion: string, releaseType: ReleaseType, tagName?: string) => string[] | undefined;
/**
 * Organizes raw commit messages into a structured changelog and determines the release type.
 *
 * This function processes a string of commit messages, filters unreleased changes,
 * categorizes each commit by its type (e.g., feature, fix, breaking change), and
 * generates a formatted changelog section. It also determines the appropriate release
 * type (e.g., major, minor, patch) based on the categorized changes.
 *
 * @param commits - A string containing commit messages, typically separated by newlines.
 * @param originUrl - The origin URL of the repository, used to generate links for pull requests or commits.
 * @returns An object containing the generated changelog section and the determined release type.
 */
export declare const organizeCommitsToChangelog: (commits: string, originUrl: string) => {
    changelog: string;
    releaseType: ReleaseType;
};