Function subtractBusinessDays

subtractBusinessDays(dateStr: string, days: number): string
Subtract a number of business days (Mon–Fri) from a YYYY-MM-DD date string. Returns the resulting date in YYYY-MM-DD format.
Fractional values are rounded down, and negative values are treated as 0.
Parameters
- dateStr: string
  ISO date string (YYYY-MM-DD)
- days: number
  Number of business days to subtract
Returns string
Throws
If dateStr is not a valid YYYY-MM-DD date string
- Defined in scripts/parliamentary-data/helpers/business-days.ts:23