· 6 min read
Why We Open-Sourced Our Time Engine but Not Our Safety Layer
Open-core means drawing a line. Here's why computation is open (trust demands it) and safety is commercial (sustainability demands it).
· 6 min read
What We Learned Running 10,000 Property-Based Tests Against a Calendar Engine
Property-based testing caught DST double-counting, leap year edge cases, and RRULE bugs that unit tests missed. Here's our proptest setup.