export type SpecFormat = 'json' | 'yaml';
export interface EmitOpenApiSpecOptions {
    output?: string | undefined;
    format?: SpecFormat | undefined;
}
/**
 * Build the server in-process (no listen), capture the OpenAPI doc, and
 * return it as a string. The `quiet: true` flag on `buildServer` keeps the
 * logger silent so this never contaminates stdout / stderr for callers.
 */
export declare function renderOpenApiSpec(format?: SpecFormat): Promise<string>;
export declare function emitOpenApiSpec(opts?: EmitOpenApiSpecOptions): Promise<void>;
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