$ git log|head -n1
commit 8b66aec6f43c5099c72ab365a93da2a9e406824e

with lexical-scope@0.0.4:

$ time module-deps bench/jquery.js | bin/cmd.js >/dev/null

real    0m7.380s
user    0m7.504s
sys     0m0.320s

with lexical-scope@0.0.5:

$ time module-deps bench/jquery.js | bin/cmd.js >/dev/null

real    0m2.441s
user    0m2.584s
sys     0m0.176s