/**
 * Read a duration written with a unit: `"2500ms"`, `"30s"`, `"5m"`, `"0.5h"`,
 * `"1w"`. Compound values (`"1h 30m"`) work too.
 *
 * A bare number is read as milliseconds, which is what the parser itself does
 * with it. `BITBUCKET_CACHE_TTL=300` therefore means 300 milliseconds, not 300
 * seconds.
 */
export declare function parseDurationMs(value: string, source: string): number;