period.bend fails

raw source on the hub · import bend-time-lib@0.4.0.0/period.bend as Period

2 imports

import Base
import ./date.bend as D

The reader could not load this file (at 0x9b6a4fc7ceea91864a75396e1b8365e5/date.bend:10). What bend.ts says:

Error:
- expected : a name (words joined by dots, got 'Date.leap.100')
- observed : 'Date.leap.100'
Location:
 9 | 
10>| def Date.leap.100(+y: U32, d100: Bool) -> Bool:
   |     ^^^^^^^^^^^^^
11 |   match d100: