code: function statefulSelectors(
    states: Array<InteractionState>,
    template: Function,
    stateMap?: Array<InteractionState>,
  ): string {
    if (!template) throw new PolishedError(67)
    if (states.length === 0) return generateSelectors(template, null)
    let selectors = []
    for (let i = 0; i < states.length; i += 1) {
      if (stateMap && stateMap.indexOf(states[i]) < 0) {
        throw new PolishedError(68)
      }
      selectors.push(generateSelectors(template, states[i]))
    }
    selectors = selectors.join(',')
    return selectors
  }
docs: Function helper that adds an array of states to a template of selectors. Used in textInputs and buttons.
  @private