export declare function optionValue(args: string[], name: string, fallback?: string): string;
export declare function optionValues(args: string[], name: string): string[];
/** ZTB-40: the one `--source` grammar — each occurrence may be comma-separated; occurrences
 *  and parts union, order-preserving, deduped, empties dropped. (A source whose NAME contains
 *  a comma becomes unaddressable by selector — accepted: `check` has always treated comma as a
 *  separator, and a comma-named source is pathological.) */
export declare function splitSelectors(occurrences: string[]): string[];