Error evaluating $toMillis('2024-08-27T22:43:15.78133')

[aeberhart]

Expression:

$toMillis('2024-08-27T22:43:15.78133')

Expected:

1724791395781

Actual:

Text '2024-08-27T22:43:15' could not be parsed, unparsed text found at index 10

[aeberhart]

JSONata uses JavaScript Date.parse() in this case (no picture string given).
The timestamp does not specify a timezone. In this case, it is up to the implementation:

Implementations usually default to the local time zone when the date string is non-standard. For consistency
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/parse

We use OffsetDateTime.parse(timestamp), which throws an error if no timestamp is provided. Probably, the test suite avoids this test case, since the correct results depends on your time zone.