Goals

Persist the date '2017-12-12 15:00:37.447 UTC'

Actual Results

When reading the date out of Realm, I find the value '2017-12-12T15:00:37.446Z'
The storage is off by one in the thousandths field. This does not happen for all values, only select ones like this example.

I believe this is due to the floating point imprecision of storing milliseconds since epoch in a double type. Natively, Realm can store nanosecond precision so it must be happening in the binding conversion layer. Looks like here.

Version of Realm and Tooling

• Realm JS SDK Version: 2.13.0
• Node or React Native: node