Ask HN: Small and good Ruby and Javascript Source to study?

Recently I started learning Ruby and JavaScript and currently I am familiar with the language syntax and semantics on the basic level.

Learning by doing is the best way as they say but I have mostly got burned by taking this strategy. Every time I will start with great enthusiasm and within 1 month I will pile up a code base which I do not feel like reading or refactoring.

This time around I want to study good code and pattern they use to keep the number of lines and complexity low. I am also planning practicing syntax on paper and analyse it offline instead of just jumping in to code.

Assuming I do not have deep CS knowledge, is there a small enough code base for Ruby and JavaScript project which I can study and understand in a month's time?

ps: I can commit 1-2 hours every day towards this goal.