0 info it worked if it ends with ok
1 verbose cli [ '/usr/local/bin/node',
1 verbose cli   '/usr/local/bin/npm',
1 verbose cli   'config',
1 verbose cli   'get',
1 verbose cli   'prefix' ]
2 info using npm@3.10.9
3 info using node@v6.9.2
4 verbose exit [ 0, true ]
5 verbose stack Error: write EPIPE
5 verbose stack     at exports._errnoException (util.js:1022:11)
5 verbose stack     at WriteWrap.afterWrite (net.js:801:14)
6 verbose cwd /Users/ottomao/workspace/anyproxy
7 error Darwin 17.2.0
8 error argv "/usr/local/bin/node" "/usr/local/bin/npm" "config" "get" "prefix"
9 error node v6.9.2
10 error npm  v3.10.9
11 error code EPIPE
12 error errno EPIPE
13 error syscall write
14 error write EPIPE
15 error If you need help, you may report this error at:
15 error     <https://github.com/npm/npm/issues>
16 verbose exit [ 1, true ]