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Set Concast["@@species"] = Observable as well as Symbol.species. #7403

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merged 1 commit into from
Dec 3, 2020
Merged

Set Concast["@@species"] = Observable as well as Symbol.species. #7403

merged 1 commit into from
Dec 3, 2020

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benjamn
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@benjamn benjamn commented Dec 2, 2020 •
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This is an initial attempt to address the problems I speculated about in #6520 (comment).

Theory: in the Hermes JS engine (used by React Native on Android), Symbol.species is not defined, so Object.defineProperty was not called by this code, but perhaps Concast["@@species"] was getting set somewhere else by a polyfill library, causing the zen-observable library to fall back to "@@species" in getSpecies instead of safely ignoring the nonexistent Concast[Symbol.species] property.

If that theory is correct, subscriptions will become usable with Hermes on React Native again, fixing #6520. 🤞

@benjamn
Set Concast["@@species"] = Observable as well as Symbol.species.
c8cdc6e 
An attempt to address the problems I speculated about in
#6520 (comment)

Theory: in the Hermes JS engine, Symbol.species is not defined, so
Object.defineProperty was not called, but perhaps "@@species" was getting
set somewhere else by a polyfill library, causing the zen-observable
library to fall back to "@@species" instead of using/ignoring the
nonexistent Symbol.species symbol.
@benjamn benjamn added this to the Release 3.4 milestone Dec 2, 2020
@benjamn benjamn self-assigned this Dec 2, 2020
@happyfloat
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Thank you very much for your effort! I try to test this patch in the near future.

@hannojg
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hannojg commented Dec 2, 2020

Using Hermes on android this hasn't fixed the issue for me, unfortunately.

@benjamn
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benjamn commented Dec 2, 2020

@hannojg Did you build your own @apollo/client with this PR applied?

In any case, this change should be in the next v3.4 beta release, so it's easier to install locally.

I think there might be more than one problem under discussion in #6520, by the way. If this PR fixes anyone's problems, then we can focus on the other problems after that, without the Symbol.species distraction.

@watadarkstar
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Thank you @benjamn for fixing this. We will help confirm if this fixes our subscriptions on Android with Hermes.

@vuongngo
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vuongngo commented Dec 3, 2020

I've tested this change on our app. Works well when hermes is enabled. Thanks @benjamn 👏 , this is a great fix.

hwillson
hwillson approved these changes Dec 3, 2020
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Wow, amazing catch and fix @benjamn. Thanks!

@hannojg
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hannojg commented Dec 3, 2020

@benjamn yes I did, happy to test this again when there is a public release (building the Apollo client manually and using this caused other warning which the console throw at me, probably messed something up)

@benjamn benjamn merged commit c8cdc6e into release-3.4 Dec 3, 2020
benjamn added a commit that referenced this pull request Dec 3, 2020
@benjamn
Set both Symbol.species and "@@species" on Concast constructor (#7403)
2a2843c 
An attempt to address the problems I speculated about in
#6520 (comment)

Theory: in the Hermes JS engine, Symbol.species is not defined, so
Object.defineProperty was not called, but perhaps "@@species" was getting
set somewhere else by a polyfill library, causing the zen-observable
library to fall back to "@@species" instead of using/ignoring the
nonexistent Symbol.species symbol.
@benjamn benjamn mentioned this pull request Dec 3, 2020
Closed
benjamn added a commit that referenced this pull request Feb 5, 2021
@benjamn
Set both Symbol.species and "@@species" on Concast constructor (#7403)
ab6b60a 
An attempt to address the problems I speculated about in
#6520 (comment)

Theory: in the Hermes JS engine, Symbol.species is not defined, so
Object.defineProperty was not called, but perhaps "@@species" was getting
set somewhere else by a polyfill library, causing the zen-observable
library to fall back to "@@species" instead of using/ignoring the
nonexistent Symbol.species symbol.
@benjamn benjamn mentioned this pull request Feb 5, 2021
Merged
benjamn added a commit that referenced this pull request Feb 5, 2021
@benjamn
Mention PRs #7403 and #7660 in CHANGELOG.md.
fc57af8
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benjamn commented Feb 5, 2021

This change has been backported to @apollo/[email protected], in case anyone was waiting for it (and unwilling/unable to use the v3.4 betas).

This was referenced Mar 11, 2021
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@quanndh
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quanndh commented Mar 18, 2021 •
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For some reason, subcription not working for me =( loading state true, data and error are undefined. Im using apollo client 3.3.8. Im got data on playground however

@hwillson hwillson removed this from the MM-2021-06 milestone Jul 29, 2021
@agatharejina
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I've tested this change on our app. Works well when hermes is enabled. Thanks @benjamn 👏 , this is a great fix.

👋! can you show me the npm packages regarding the apollo/client and react native package?

I have already tried installing @apollo/[email protected] and @apollo/[email protected]
but, it still won't work everytime I run assembleRelease with hermes enabled

there are my current packages

"@apollo/client": "^3.5.5",
 "react": "16.13.1",
"react-native": "0.63.4",

Are there any solutions to this? thanks before.

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@hwillson hwillson hwillson approved these changes

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8 participants
@benjamn @happyfloat @hannojg @watadarkstar @vuongngo @quanndh @agatharejina @hwillson