mmntjs
Compatibility-first migration bridge away from moment.js

Docs

Invalid Dates

Make invalid-date behavior explicit, because it affects both UI and business logic edge cases.

Guidance

Failure Behavior Is Part Of The Contract

Invalid dates influence formatting, comparisons, branching, and sometimes error handling. Teams evaluating migration safety should compare invalid behavior directly rather than treating it as a low-probability corner.

How To Use This Doc

Use this page as a migration review aid rather than as a generic tutorial. If the behavior in this area is business-critical, compare it directly against your current moment.js usage and record the outcome before expanding rollout.