mrrama/node-bunyan-prettystream — pull request #1 by diversario (2013-07-14 02:20:58+00:00)
Title: Handle undefined values.

Convert undefined values into empty strings.
Fixes
```
TypeError: Cannot call method 'indexOf' of undefined
at bunyan-prettystream/lib/prettystream.js:320:19
```
error.

Test included.