How do I set the default selection for QuickPickItem

[MrZmcH]

for example
{picked: true}

[msujew]

@MrZmcH You need to set the activeItems on the quick pick itself. See:

theia/packages/core/src/browser/i18n/language-quick-pick-service.ts

Lines 35 to 49 in ad2e106

	const quickInput = this.quickInputService.createQuickPick<LanguageQuickPickItem>();
	const installedItems = await this.getInstalledLanguages();
	const quickInputItems: (LanguageQuickPickItem | QuickPickSeparator)[] = [
	{
	type: 'separator',
	label: nls.localizeByDefault('Installed')
	},
	...installedItems
	];
	quickInput.items = quickInputItems;
	quickInput.busy = true;
	const selected = installedItems.find(item => nls.isSelectedLocale(item.languageId));
	if (selected) {
	quickInput.activeItems = [selected];
	}

[MrZmcH]

now,The latest version which is the most stable?

[msujew]

Generally, we always recommend either the latest release (1.44.0) or the current community release (1.43.1).

[MrZmcH]

I did not find the version number of each version of theia corresponding to the dependency, such as yarn, node, python, is there such a comparison table?

[msujew]

We always use yarn v1, as for everything else: We only show what's currently needed. See here. We don't expect users to upgrade from one outdated version to another outdated version.

[MrZmcH]

Thank you,I will try @msujew