function getTimestamp() {
    // use `Math.floor()` here to avoid the "Unix Millennium Bug"
    var now = Math.floor(Date.now() / 1000)

    // it's another second since the last id were created,
    // so we need to regenerate the timestamp
    if (time !== now) {
        ctr       = 0
        timestamp = pad(time = now, 8, 16)
    }
    // Since changing parts of an identifier are the timestamp and
    // the sequence; the count of maximum allocatable ids in a second
    // is limited by the sequence size (3-bytes = about 16 million).
    // Otherwise uniqueness is not guaranteed.
    else
        assert(++ctr < 0x1000000, 'more than 16 million ids generated in 1 second')

    return timestamp
}
function getTimestamp() {
    
    var now = Math.floor(Date.now() / 1000)

    
    
    if (time !== now) {
        ctr       = 0
        timestamp = pad(time = now, 8, 16)
    }
    
    
    
    
    else
        assert(++ctr < 0x1000000, 'more than 16 million ids generated in 1 second')

    return timestamp
}
function getTimestamp ( ) { // use `Math.floor()` here to avoid the "Unix Millennium Bug" var now = Math . floor ( Date . now ( ) / 1000 ) // it's another second since the last id were created, // so we need to regenerate the timestamp if ( time !== now ) { ctr = 0 timestamp = pad ( time = now , 8 , 16 ) } // Since changing parts of an identifier are the timestamp and // the sequence; the count of maximum allocatable ids in a second // is limited by the sequence size (3-bytes = about 16 million). // Otherwise uniqueness is not guaranteed. else assert ( ++ ctr < 0x1000000 , 'more than 16 million ids generated in 1 second' ) return timestamp }
Calculate the current timestamp if needed,
otherwise return the last cached one.

@return {string}
Calculate the current timestamp if needed otherwise return the last cached one .