/**
 * The one rule every command over "several runs" uses to turn paths into run
 * directories: a path that is a run directory (has `statelog.jsonl`) is that
 * run; a directory holding run directories is a group and yields them,
 * sorted, at most TWO levels down: a suite run is `<group>/<testId>/`, and a
 * suite run with repeated trials is `<group>/<testId>/<trial>/`. Nothing
 * deeper is looked at, and `.staging` (a suite still running) is never
 * entered. Anything else is an error. Resolved, absolute paths come back.
 */
export declare function isRunDirectory(dir: string): boolean;
export declare function childRunDirectories(dir: string): string[];
export declare function findRunDirectories(paths: string[]): string[];
/** The same run directory once, however many ways the walk reached it.
 *  First appearance wins. Canonical paths (`realpath`), so identity and any
 *  later mutation target come from one source of truth: the walk follows
 *  symlinks while classifying, so two spellings can name one directory. */
export declare function uniqueRunDirectories(dirs: string[]): string[];