epochToMilliseconds function
convert epoch to unix time in milliseconds
Implementation
int epochToMilliseconds({int epoch = 0}) =>
min(firstOneSecondEpoch, epoch) * millisecondsPerEpoch0_207 +
max(0, epoch - firstOneSecondEpoch) * millisecondsPerEpochGt207 +
epoch0Slot0UtcMs;