Micro event dispatcher

index.js

function ev (m,e) {
  m = this, e = []
  m.on = function (a, b) { e.push([a,b]) }
  m.emit = function (a) {
    for (var i in e) e[i][0].test(a) && e[i][1].apply(m, [].slice.call(arguments, 1))
  }
}