Fix assumption of "localStorage" presence when persisting request state

[Hypermona]

About

Devtools does not detect a running instance of urql.

Reproduction

1. Clone this example project
2. Run yarn install
3. Run yarn start
4. Open chrome and navigate to http://localhost:8080
5. Open the urql devtools panel

Expected result

• Extension detects app

Actual result

• Extension shows message "Waiting for exchange"

Stack trace

Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document.
  at la (chrome-extension://mcfphkbpmkbeofnkjehahlmidmceblmm/panel.js:6:58506)
  at Qo (chrome-extension://mcfphkbpmkbeofnkjehahlmidmceblmm/panel.js:2:1043871)
  at ws (chrome-extension://mcfphkbpmkbeofnkjehahlmidmceblmm/panel.js:2:1089921)
  at yu (chrome-extension://mcfphkbpmkbeofnkjehahlmidmceblmm/panel.js:2:1082663)
  at mu (chrome-extension://mcfphkbpmkbeofnkjehahlmidmceblmm/panel.js:2:1082588)
  at su (chrome-extension://mcfphkbpmkbeofnkjehahlmidmceblmm/panel.js:2:1079618)
  at chrome-extension://mcfphkbpmkbeofnkjehahlmidmceblmm/panel.js:2:1031259
  at t.unstable_runWithPriority (chrome-extension://mcfphkbpmkbeofnkjehahlmidmceblmm/panel.js:2:1106315)
  at Gi (chrome-extension://mcfphkbpmkbeofnkjehahlmidmceblmm/panel.js:2:1030968)
  at Ji (chrome-extension://mcfphkbpmkbeofnkjehahlmidmceblmm/panel.js:2:1031204)

Additional info

environment	version
browser	Chrome 69
urql	0.0.0
urql devtools	0.0.0
@urql/devtools	0.0.0

[andyrichardson]

Hey there, thanks for the report!

Looks like this issue is caused by #350.

@ValGeorgiev was local storage working for you in the browser extension?

[frederikhors]

Is there a work-around?

[andyrichardson]

HI @frederikhors, for now there isn't - I just tried to reproduce the issue but haven't had any luck.

I'm guessing this is related to the browser being used - would be great if yourself or @Hypermona can share what browser and version you're experiencing this on.

[frederikhors]

Chrome 92 Windows 10.

[raduflp]

It can be reproduced in Chrome 93, but only in Incognito Mode.
Tried disabling "Privacy Sandbox" but to no avail.

[frederikhors]

@andyrichardson Is anyone expected to work on it?

[pantajoe]

Had the same issue.
After deactivating "Block third-party cookies", the extension works (I believe you can also add an exception for localhost instead of disabling this option for all sites). Tested on MacOS and Chrome 99:

[andyrichardson]

Hey folks, sounds like this is due to having third party cookies blocked as @pantajoe has discovered - enabling them for the time being should get around the issue.

I'll leave this open as this can likely be resolved by introducing a check to see whether localStorage is available (see here) before storing cross-session state.

[peter-olom]

Will this ever be fixed? This issue appears stale and still a problem in 2023