src/vs/workbench/contrib/terminal/browser/terminalTabbedView.ts/TerminalTabbedView/_shouldShowTabs
class TerminalTabbedView:	private _shouldShowTabs(): boolean {
		const enabled = this._terminalService.configHelper.config.tabs.enabled;
		const hide = this._terminalService.configHelper.config.tabs.hideCondition;
		if (!enabled) {
			return false;
		}

		if (hide === 'never') {
			return true;
		}

		if (hide === 'singleTerminal' && this._terminalGroupService.instances.length > 1) {
			return true;
		}

		if (hide === 'singleGroup' && this._terminalGroupService.groups.length > 1) {
			return true;
		}

		return false;
	}