/**
 * YAML-based version source provider for pubspec.yaml and similar manifests.
 *
 * @packageDocumentation
 */
import type { VersionSourceProvider } from './provider';
/**
 * Reads and writes version strings from YAML manifest files.
 *
 * @remarks
 * Supports dotted key paths (e.g. `'flutter.version'`) for nested values.
 * Uses targeted regex replacement for writes to preserve comments and formatting.
 *
 * @public
 * @since 0.3.0
 */
export declare class YamlVersionSource implements VersionSourceProvider {
    /** Human-readable provider name. */
    readonly name: string;
    /** Filename of the YAML manifest (e.g. `'pubspec.yaml'`). */
    readonly manifestFile: string;
    /** Dotted key path to the version field within the YAML document. */
    private readonly versionKey;
    /**
     * Creates a new YAML version source.
     *
     * @param manifestFile - YAML manifest filename.
     * @param versionKey - Dotted key path to the version field.
     */
    constructor(manifestFile?: string, versionKey?: 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 YAML 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 YAML manifest, preserving formatting.
     *
     * @param version - Version string to write.
     * @param cwd - Project directory containing the manifest.
     */
    setVersion(version: string, cwd: string): void;
}
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