/** Parse a duration string to milliseconds. Accepts a leading-minus disable
 *  value like `-1s`. A bare unitless number throws: the unit must be explicit so
 *  a value's meaning is never guessed. The result must be finite — an absurdly
 *  long digit string would otherwise overflow to Infinity and silently install
 *  no guard (fail-open on a cost-control feature). `label` names the source in
 *  error messages (e.g. `--max-time` or `budget.maxTime`). */
export declare function parseDurationMs(s: string, label?: string): number;