import type { FileType } from '../../common/protocol.js';
/** File extensions for Glk file types */
export declare function filetype_to_extension(filetype: FileType): string;
/** Construct a file-filter list for a given usage type. */
export declare function filters_for_usage(usage: string | null): {
    name: string;
    extensions: string[];
}[];
/** Convert a native path to a POSIX path */
export declare function path_native_to_posix(path: string): string;
/** Convert a POSIX path to a native path */
export declare function path_posix_to_native(path: string): string;