electron: Update to 27.0.3.

[JoeGruffins]

closes #3921

[matheusd]

Tested on windows, linux and macOS.

On macOS it worked fine.

On Windows the rebuild-natives call failed due to node-abi not supporting electron 27.0.3. I had to downgrade to 26.4.3 to rebuild native modules. DEX worked on that version.

On Linux, DEX did not open, and downgrading to 26.4.3 also did not make it work (neither in testnet nor mainnet). Still trying to work out why or which version is able to run it.

[alexlyp]

@matheusd That was what I encountered as well. I was able to narrow it down to something in https://github.com/electron/electron/releases/tag/v21.3.0 that was causing it to not work on Linux anymore. Hence why I rolled back to 21.2.3. Afaict that's the last working version of electron. And the only change in there that could possibly have a difference is a Chromium update.

[matheusd]

While debugging I set the dex window to openDevTools and I get an error there. That may or may not be the issue. I'm retesting on master and then will test on 21.3.0 to see if that's the issue

[matheusd]

This is the error I get starting on electron 21.3.0 when opening the dex window (this is the console for the dex window, not the main decrediton window):

[matheusd]

I expect something in chromium broke a lib that the dex interface uses on linux.

[matheusd]

I believe this is the issue:

navigator.languages

• on 21.2.3: ['en-US']
• on 21.3.0: ['en-US', 'c']

More precisely, passing 'c' as one of the options for Intl.NumberFormat() causes the issue, so this needs to be filtered.

We'll probably need to check with the DEX UI ppl how to fix this

[JoeGruffins]

On Windows the rebuild-natives call failed due to node-abi not supporting electron 27.0.3. I had to downgrade to 26.4.3 to rebuild native modules. DEX worked on that version.

@matheusd Shall I make this upgrade to 26.4.3? That also solves the main ledger issue.

[matheusd]

@matheusd Shall I make this upgrade to 26.4.3? That also solves the main ledger issue.

Yes please. This should fix the windows build, though there's still the issue of the DEX UI failing on linux.

[alexlyp]

Closing this one in favor of another that includes the dcrdex fix as well.