/**
 * Git tag-based version source for Go, Swift, and similar ecosystems.
 *
 * @packageDocumentation
 */
import type { VersionSourceProvider } from './provider';
/**
 * Reads version from the latest Git tag. Writing creates a new annotated tag.
 *
 * @remarks
 * This provider is used for languages where the version is determined
 * entirely by Git tags (Go, Swift, PHP/Packagist).
 *
 * The tag prefix (`v` by default) is auto-detected from existing tags
 * when writing, so projects using unprefixed tags (e.g. `1.0.0`) stay
 * consistent.
 *
 * @public
 * @since 0.3.0
 */
export declare class GitTagSource implements VersionSourceProvider {
    /** Human-readable provider name. */
    readonly name = "git-tag";
    /** Empty string since git-tag has no manifest file. */
    readonly manifestFile = "";
    /**
     * Returns `true` when `cwd` is inside a Git repository.
     *
     * @param cwd - Project directory to check.
     * @returns Whether a Git repository is found.
     */
    exists(cwd: string): boolean;
    /**
     * Reads the version string from the latest Git tag.
     *
     * @param cwd - Project directory containing the Git repository.
     * @returns The version string extracted from the latest version tag.
     */
    getVersion(cwd: string): string;
    /**
     * Creates a new annotated Git tag for the given version.
     *
     * @param version - Version string to tag.
     * @param cwd - Project directory containing the Git repository.
     */
    setVersion(version: string, cwd: string): void;
    /** Try version-like tag patterns, fall back to any tag. */
    private describeVersionTag;
    /** Detect whether existing tags use a `v` prefix or not. */
    private detectPrefix;
}
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