code: function getCachePathCandidates() {
    return [
      process.env.npm_config_sass_binary_cache,
      process.env.npm_config_cache,
    ].filter(function(_) { return _; });
  }
docs: An array of paths suitable for use as a local disk cache of the binding.
  
  @return {[]String} an array of paths
  @api public