/**
 * JSON-based version source provider for package.json and composer.json.
 *
 * @packageDocumentation
 */
import type { VersionSourceProvider } from './provider';
/**
 * Reads and writes version strings from JSON manifest files.
 *
 * @remarks
 * Supports dotted key paths for nested version fields and preserves the
 * original indentation style when writing back to disk.
 *
 * @public
 * @since 0.3.0
 */
export declare class JsonVersionSource implements VersionSourceProvider {
    /** Human-readable provider name. */
    readonly name: string;
    /** Filename of the JSON manifest (e.g. `'package.json'`). */
    readonly manifestFile: string;
    /** Dotted key path to the version field within the JSON document. */
    private readonly versionPath;
    /**
     * Creates a new JSON version source.
     *
     * @param manifestFile - JSON manifest filename.
     * @param versionPath - Dotted key path to the version field.
     */
    constructor(manifestFile?: string, versionPath?: 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 JSON manifest.
     *
     * @param cwd - Project directory containing the manifest.
     * @returns The version string extracted from the manifest.
     */
    getVersion(cwd: string): string;
    /**
     * Writes a version string to the JSON manifest, preserving indentation.
     *
     * @param version - Version string to write.
     * @param cwd - Project directory containing the manifest.
     */
    setVersion(version: string, cwd: string): void;
}
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