nl_tokens: 64 - bit int handling is based on github . com / dpw / node - buffer - more - ints ( MIT - licensed )
pl_tokens: function ( ) { var val = readUInt32 ( this . buf , this . <mask> ) + readUInt32 ( this . buf , this . pos + 4 ) * SHIFT_LEFT_32 ; this . pos += 8 ; return val ; }