duplicated block id: 1
size: 19 cleaned lines of code
in 2 files:
 - lib/util.js (149:168)
 - lib/util.js (241:260)

duplicated block id: 2
size: 10 cleaned lines of code
in 2 files:
 - lib/util.js (137:147)
 - lib/util.js (229:239)