For jorybro

gistfile1.js

var derp = {foo: 3, bar: 3};
var merp= [];
console.log(derp);

for (var name in derp) {
  if (derp.hasOwnProperty(name)) {
    for (var i = 0; i < derp[name]; i++) {
      merp.push(name);
    } 
  }
}

console.log(merp);

//coffescript
derp =
  foo: 3
  bar: 3

merp = []
console.log derp
for name of derp
  if derp.hasOwnProperty(name)
    i = 0

    while i < derp[name]
      merp.push name
      i++
console.log merp