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document.documentElement.classList.add('vector-feature-night-mode-enabled', 'skin-theme-clientpref-night'); // Remove any existing light mode classes if present document.documentElement.classList.remove('skin-theme-clientpref-day');
document.documentElement.classList.add('vector-feature-night-mode-enabled', 'skin-theme-clientpref-night'); // Remove any existing light mode classes if present document.documentElement.classList.remove('skin-theme-clientpref-day');