* as its `stateNode`.
Remember the aim of the chat
，推荐阅读新收录的资料获取更多信息
There was a comment on Hacker News that took this seriously, but of course, it’s a joke.，这一点在新收录的资料中也有详细论述
The first two requirements (“Efficient” and “Fine-grained”) are important for performance. Imagine a large spreadsheet with millions of cells containing formulas — it would be a huge waste of resources to recalculate every single cell, every time any input changes. Similarly, you don’t want to calculate the value of a cell multiple times if you can help it. In general, we want to do the minimum amount of work possible.