code: function circularSectionsError(sectionName, path) {
    const joinedPath = path.join(' -> ')
    const message = `Circular sections! Path: ${joinedPath} -> [${sectionName}]`
    return new Error(message)
  }
docs: Returns a new error indicating circular sections.
  
  @param  {String} sectionName
  The section at which the circularity was determined.
  
  @param  {String[]} path
  The circular sections path.
  
  @return {Error} Our beautiful error.