jvain

Shouldn't the doFilter function use query instead of this.state.query?

  const doFilter = query => user =>
    query === user.name;

Booleans, how do they work?

  const DEBUG = process.env.NODE_ENV !== 'production'
  module.exports = {
    debug: DEBUG ? true : false

There's a new book from Khoi Vinh, just read it and liked it a lot. Also it's the first book on applying grid based design on web sites instead of print:

http://www.subtraction.com/2010/11/05/i-wrote-a-book