/**
 * NodeVersionDiagnostic
 *
 * Verifies that the Node.js runtime executing `shep doctor` is at or above
 * the project's minimum supported major version (Shep requires Node 22+).
 * Reads `process.version` directly — no subprocess needed.
 */
import type { DiagnosticResult, IDiagnostic } from '../../../ports/output/services/diagnostic.interface.js';
export declare class NodeVersionDiagnostic implements IDiagnostic {
    private readonly versionString;
    readonly name = "node-version";
    constructor(versionString?: string);
    run(): Promise<DiagnosticResult>;
}
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