Function onMedia

packages/ui/src/theme/context.tsx:256–259

()

      const mediaQuery = window.matchMedia("(prefers-color-scheme: dark)")
      const onMedia = () => {
        if (store.colorScheme !== "system") return
        setStore("mode", getSystemMode())
      }
      makeEventListener(mediaQuery, "change", onMedia)

      const rawTheme = read(STORAGE_KEYS.THEME_ID)