function toPromise()

in site-ui/gulp.d/tasks/build-preview-pages.js [207:214]

• 8 lines of code
• 2 McCabe index (conditional complexity)

function toPromise (stream) {
  return new Promise((resolve, reject, data = {}) =>
    stream
      .on('error', reject)
      .on('data', (chunk) => chunk.constructor === Object && Object.assign(data, chunk))
      .on('finish', () => resolve(data))
  )
}