nl_tokens: Initialize values for calculations .
pl_tokens: function setDefaults ( ) { // sequence: generate a random 3-byte integer initial value for the sequence counter if ( seq === undefined ) seq = ~ ~ ( Math . <mask> ( ) * 0xffffff ) // processId: 2-byte integer derived from the PID assigned by the OS if ( pid === undefined ) pid = process . pid % 0xffff // machineId: first three bytes of the md5 hash calculated from OS hostname if ( mid === undefined ) mid = crypto . createHash ( 'md5' ) . update ( os . hostname ( ) ) . digest ( ) . slice ( 0 , 3 ) . readUIntBE ( 0 , 3 ) // reset the counter // (if `mid` or `pid` changes then previously allocated ids in the current second are freed) ctr = 0 // `unique` is the fixed-length composition of `mid` and `pid` unique = pad ( mid , 6 , 16 ) + pad ( pid , 4 , 16 ) // calculate the initial sequence prefix seqpref = pad ( ~ ~ ( seq / 16 ) , 5 , 16 ) }