Function clone

src/util/obj.js:4–13

(dest, src)

 * Shallow clone
 */
var clone = function (dest, src) {
  // Clear destination
  Object.keys(dest).forEach(function(key) {
    dest[key] = void 0;
  });
  // Copy source into destination
  Object.keys(src).forEach(function(key) {
    dest[key] = src[key];
  });
};

/**
 * Replace array contents with another array