/**
 * Format-aware file extension mapping
 *
 * Handles the extension differences between cli_v1 and newo_v2:
 *   cli_v1:  guidance -> .guidance,  nsl -> .jinja
 *   newo_v2: guidance -> .nslg,      nsl -> .nsl
 */
import type { RunnerType } from '../types.js';
import { type FormatVersion } from './types.js';
/**
 * Get file extension for a runner type in a specific format
 */
export declare function getExtensionForFormat(runnerType: RunnerType, format: FormatVersion): string;
/**
 * Get runner type from file extension (works for all 4 extensions)
 */
export declare function getRunnerTypeFromExtension(ext: string): RunnerType;
/**
 * Check if a filename is a recognized script file (any format)
 */
export declare function isScriptFile(filename: string): boolean;
/**
 * Infer format version from a file extension
 */
export declare function getFormatFromExtension(ext: string): FormatVersion;
//# sourceMappingURL=extensions.d.ts.map