code: function checkAndDownloadBinary() {
    if (process.env.SKIP_SASS_BINARY_DOWNLOAD_FOR_CI) {
      console.log('Skipping downloading binaries on CI builds');
      return;
    }
  
    var cachedBinary = sass.getCachedBinary(),
      cachePath = sass.getBinaryCachePath(),
      binaryPath = sass.getBinaryPath();
  
    if (sass.hasBinary(binaryPath)) {
      console.log('node-sass build', 'Binary found at', binaryPath);
      return;
    }
  
    try {
      mkdir.sync(path.dirname(binaryPath));
    } catch (err) {
      console.error('Unable to save binary', path.dirname(binaryPath), ':', err);
      return;
    }
  
    if (cachedBinary) {
      console.log('Cached binary found at', cachedBinary);
      fs.createReadStream(cachedBinary).pipe(fs.createWriteStream(binaryPath));
      return;
    }
  
    download(sass.getBinaryUrl(), binaryPath, function(err) {
      if (err) {
        console.error(err);
        return;
      }
  
      console.log('Binary saved to', binaryPath);
  
      cachedBinary = path.join(cachePath, sass.getBinaryName());
  
      if (cachePath) {
        console.log('Caching binary to', cachedBinary);
  
        try {
          mkdir.sync(path.dirname(cachedBinary));
          fs.createReadStream(binaryPath)
            .pipe(fs.createWriteStream(cachedBinary))
            .on('error', function (err) {
              console.log('Failed to cache binary:', err);
            });
        } catch (err) {
          console.log('Failed to cache binary:', err);
        }
      }
    });
  }
docs: Check and download binary
  
  @api private