How React Works · Part 068 min read
Fiber - Work You Can Pause
Why React replaced recursion with fibers, how a render walks a linked tree one unit at a time, and what it means that React can pause or throw away unfinished work.
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- React Internals · Part 0611 min read
The Work Loop - Render Phase
performWorkOnRoot decides whether this render may be time-sliced, then calls renderRootSync or renderRootConcurrent. Both clone the HostRoot into a work-in-progress fiber…