code: function format(template, values) {
  	return Object
  		.entries(values)
  		.filter(
  			([key]) => /^[a-z0-9_-]+$/gi.test(key)
  		)
  		.map(
  			([key, value]) =>
  				[new RegExp(`([^{]|^){${key}}([^}]|$)`,'g'), `$1${value}$2`]
  		)
  		.reduce(
  			(str, [regexp, replacement]) => {
  				return str.replace(regexp, replacement)
  			}, template
  		)
  		.replace(/({|}){2}/g, '$1')
  }
docs: Replace in-string variables with their values from given object
  @param  {String} template
  @param  {Object} values
  @return {String}