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[devtools] Fix can't expand prop value in some scenario #20534

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merged 4 commits into from
Jan 19, 2021
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[devtools] Fix can't expand prop value in some scenario #20534

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a8111b2
[devtools] Fix can't expand in some scenario
iChenLei Jan 2, 2021
7627c9a
[devtools] Fix can't expand prop value in some scenarios
iChenLei Jan 5, 2021
77f9b70
Merge branch 'devtools-cant-expand' of github.com:iChenLei/react into…
Jan 19, 2021
8290732
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Jan 19, 2021
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4 changes: 3 additions & 1 deletion packages/react-devtools-shared/src/hydration.js
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Original file line number Diff line number Diff line change
Expand Up @@ -383,7 +383,9 @@ export function hydrate(

const value = parent[last];

if (value.type === 'infinity') {
if (!value) {
return;
} else if (value.type === 'infinity') {
parent[last] = Infinity;
} else if (value.type === 'nan') {
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Maybe we can have same issue for Infinty ?

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@iChenLei iChenLei Jan 4, 2021 •
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yeah, I miss the scenario which value is Infinity(Infinity is Truthy). Any suggestion for me ? I think i did not understand your PR #19786 (I mean all logic detail) is the biggest obstacle to fix this bug.

- cleaned.forEach((path: Array<string | number>) => {
+ [...new Set(cleaned)].forEach((path: Array<string | number>) => {

Is these code ok? When we loop cleaned array, we filter the duplicate item and don't need check the parent[last]?

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We don't have duplicate keys here actually. In your example I think we have two symbols with the same name and as I have to change the symbols into a string so that we can do the postmessage that's why we have this issue.

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I didn't write any Symbol in my business code, Just class(decorators) 、mobx and react. I think store and store prototype has same params is the reason. (mobx internal reactivity machine logic)
Mobx will add @observable params to the prototype, so getAllEnumerableKeys will return [..., 'finished', 'finished'].

Look the codesandbox console or chrome devtools console
Reproduce Codesandbox link

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@omarsy omarsy Jan 4, 2021 •
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Thank you. I can now reproduce the issue with a basic object.
Reproduce issue
Maybe @bvaughn we should not include inherited keys or find a way to avoid duplicates ?
Or you think it is normal to have this ?
image

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Ok, I rebase my PR with your code 😆 , and add unit test later. ( Now it's 02:16 in shanghai, china. I need to sleep. Thank u, bvaughn

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Please rest! 🙇

Ping me once you've added a test and I'll review again.

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@bvaughn Hi, I had finished the unit test, please review, thank u very much ! 😆

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Thanks. It's back in my queue.

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If no problem in this pull request, I hope you can release a new small version (eg: 4.10.2) for react devtools , that's very helpful for my team. Thank you ! bvaughn

parent[last] = NaN;
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