Function parseGregorian

Date formatting with pattern tokens. See PATTERNS for presets and the format function docs for the full token reference table.

parseGregorian(str: string): GregorianDate | null
Parse a Gregorian date string into { year, month, day }

Supports formats:
- ISO: "2025-10-11"
- Slash: "2025/10/11"
- Chinese: "2025年10月11日"
Parameters
- str: string
  Date string
Returns GregorianDate | null
GregorianDate or null if unparseable
Example
```
parseGregorian('2025-10-11')  // { year: 2025, month: 10, day: 11 }
parseGregorian('2025/10/11')  // { year: 2025, month: 10, day: 11 }
parseGregorian('2025年10月11日') // { year: 2025, month: 10, day: 11 }
```
- Defined in format.ts:346