code: function buildPaths (initialPaths, optionPaths) {
    const paths = Array.isArray(initialPaths) ? initialPaths : [initialPaths]
  
    if (_.isString(optionPaths)) {
      paths.push(optionPaths)
    } else if (Array.isArray(optionPaths)) {
      paths.push(...optionPaths)
    } // if ...
  
    return paths
  }
docs: loadBlueprints