Use findByIdAndUpdate to Change Documents

• receives regular Javascript object as its parameter
• optional { new: true } parameter cause event handler to be called with new modified document

blogsRouter.put('/:id', async (request, response) => {
  const blog = request.body
  const updatedBlog = await Blog.findByIdAndUpdate(request.params.id, blog, { new: true })
  response.json(updatedBlog)
})

Source -> Mongoose: findByIdAndUpdate method

To fix the deprecated warnings we need to add following to schema definition module

mongoose.set('useFindAndModify', false)

Source -> Stack Overflow