Cannot read properties of undefined (reading 'installAndRestartMessage')

[vscodenpa]

TypeError: Cannot read properties of undefined (reading 'installAndRestartMessage')
at <anonymous> in src/vs/workbench/contrib/localization/electron-sandbox/localization.contribution.ts:128:28

Go to Errors Site

[TylerLeonhardt]

Although I should handle undefined better… there might be something on the extension side worth looking into...

That error is thrown here:
https://github.com/microsoft/vscode/blob/442da7da9f472a8fc315ac0c5b27ef2441682a29/[…]trib/localization/electron-sandbox/localization.contribution.ts
If we look at that block we see:

const translationsFromPack: any = translation && translation.contents ? translation.contents['vs/workbench/contrib/localization/electron-sandbox/minimalTranslations'] : {};
const promptMessageKey = extensionToInstall ? 'installAndRestartMessage' : 'showLanguagePackExtensions';
const useEnglish = !translationsFromPack[promptMessageKey];

translationsFromPack can only be undefined if this returns undefined:

translation.contents['vs/workbench/contrib/localization/electron-sandbox/minimalTranslations']

It shouldn’t be undefined because it is in the language pack (file was too long for github… search for minimalTranslations):
https://raw.githubusercontent.com/microsoft/vscode-loc/main/i18n/vscode-language-pack-cs/translations/main.i18n.json
So that leads me to believe that something is suspicious in:
https://github.com/microsoft/vscode/blob/442da7da9f472a8fc315ac0c5b27ef2441682a29/[…]/platform/extensionManagement/common/extensionGalleryService.ts

[TylerLeonhardt]

/duplicate #161725