reactpatterns | Patterns for React Developers | Frontend Utils library

const mostLikes = (blogs) => {
  if (!blogs.length) {
    return 0
  }

  const distinctAuthors = [...new Set(blogs.map((blog) => blog.author))]
  const summer = (prev, comp) => prev.likes + comp.likes

  console.log(distinctAuthors)
  const dummyAuth = {
    author: 'hmm',
    likes: 0,
  }

  const authorsWithLikes = distinctAuthors.map((author) => ({
    author,
    likes: blogs.filter((n) => n.author === author).reduce(summer, dummyAuth),
  }))

  const reducer = (prev, comp) => (prev[1] > comp[1] ? prev : comp)
  return authorsWithLikes.reduce(reducer, authorsWithLikes[0])
}