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Published 20 hours ago • verified publisher icon JesseZhao1990
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手写一个PromiseA+的实现

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defer timing issue

发现一个比较微妙但又很严肃的问题：**.then 在任何时候都应当是异步的，所以 defer 在 then 中也必须有体现，故而可能在 then 中一次性 defer 比较好。** ![image](https://user-images.githubusercontent.com/12626454/82751318-ed740a80-9de8-11ea-954e-aa9d36aca11b.png)

xxleyi avatar xxleyi

resolve twice issue

1 comment

![image](https://user-images.githubusercontent.com/12626454/82723101-f5f01680-9cfe-11ea-9acb-4ab519456fcb.png) 这个不应该发生😄

xxleyi avatar xxleyi

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verified publisher icon JesseZhao1990

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手写一个PromiseA+的实现

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