4 ms·

How? Isn't Preact totally different? How can Facebook patent other people's code like that?

• Flenser 9y ago
  You can patent the idea or algorithm that the code implements, so long as the code isn't old enough to be considered "prior art".
  • fiatjaf 9y ago
    So all other frameworks that use the concept of virtual dom are also owned by React?
    • Flenser 9y ago
      They can only be owned by their copyright holders, which is separate from patents. If anyone had a patent on virtual dom / diffing, then they could sue anyone else that used an implementation that was implemented in the same way as the implementation in the patent. That doesn't then mean that they "own" those implementations, only that they can use the courts to stop others using them or pay to licence their patent.