formatToArray.js

/**
 * Replaces string {placeholders} with properties of a given object, but
 * interpolates into and returns an array instead of a string.
 * By default, any resulting empty strings are stripped out of the array. To
 * disable this, pass an options object with a 'strip' property which is false.
 */
function formatToArray(str, obj, options) {
  var parts = str.split(/\{(\w+)\}/g)
  for (var i = 1, l = parts.length; i < l; i += 2) {
    parts[i] = (object.hasOwn(obj, parts[i])
                ? obj[parts[i]]
                : '{' + parts[i] + '}')
  }
  if (!options || (options && options.strip !== false)) {
    parts = parts.filter(function(p) { return p !== ''})
  }
  return parts
}