Transforming Epoch Timestamp to DateTimeUtc in Schema

Schema.transform(
// first transform seconds to millis
Schema.transform(Schema.Number,Schema.Number, {
    strict: true,
    decode: (n) => n * 1000,
    encode: (n) => n / 1000,
  }),
// then to DateTimeUtc
  Schema.DateTimeUtcFromNumber,
  {
    strict: true,
    decode: (number) => number,
    encode: (_, d) => d.epochMillis,
  }
)