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@ -2,6 +2,22 @@
@@ -2,6 +2,22 @@
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[代码位置](https://github.com/facebook/react/blob/bd4784c8f8c6b17cf45c712db8ed8ed19a622b26/packages/react-reconciler/src/ReactFiberBeginWork.old.js#L3818) |
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```javascript |
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if (workInProgress._debugNeedsRemount && current !== null) { |
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return remountFiber( |
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current, |
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workInProgress, |
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createFiberFromTypeAndProps( |
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workInProgress.type, |
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workInProgress.key, |
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workInProgress.pendingProps, |
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workInProgress._debugOwner || null, workInProgress.mode, |
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workInProgress.lanes |
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) |
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); |
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} |
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``` |
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第一段是针对开发环境的逻辑,先跳过 |
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在进入主要函数逻辑之前,会先进入一个对 current 的空值判断,这个 current 就是 React 双缓存机制中的 current Fiber 树的 Fiber 节点,然后进入 |
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