/**
 * Regex-based version source for source-code manifests.
 *
 * Handles gemspec, mix.exs, setup.py, build.gradle, etc.
 *
 * @packageDocumentation
 */
import type { VersionSourceProvider } from './provider';
/**
 * Reads and writes version strings using regex extraction from source files.
 *
 * @remarks
 * Capture group 1 of the provided regex must match the version string.
 * Uses position-based replacement to avoid wrong-match corruption when
 * writing back to disk.
 *
 * @public
 * @since 0.3.0
 */
export declare class RegexVersionSource implements VersionSourceProvider {
    /** Human-readable provider name. */
    readonly name: string;
    /** Filename of the source manifest (e.g. `'setup.py'`). */
    readonly manifestFile: string;
    /** Compiled regex used to locate the version string. */
    private readonly versionRegex;
    /**
     * Creates a new regex version source.
     *
     * @param manifestFile - Source manifest filename.
     * @param versionRegex - Regex string with at least one capture group for the version.
     */
    constructor(manifestFile: string, versionRegex: string);
    /**
     * Returns `true` when the manifest file exists in `cwd`.
     *
     * @param cwd - Project directory to check.
     * @returns Whether the manifest file exists.
     */
    exists(cwd: string): boolean;
    /**
     * Reads the version string from the source manifest using regex extraction.
     *
     * @param cwd - Project directory containing the manifest.
     * @returns The version string captured by group 1 of the regex.
     */
    getVersion(cwd: string): string;
    /**
     * Writes a version string to the source manifest using position-based replacement.
     *
     * @param version - Version string to write.
     * @param cwd - Project directory containing the manifest.
     */
    setVersion(version: string, cwd: string): void;
}
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