> For the complete documentation index, see [llms.txt](https://book.hajoeun.dev/friendly-next-js/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.hajoeun.dev/friendly-next-js/part-3-next.js/undefined-4/undefined.md).

# 테마 변경 기능

### ThemeIcon 컴포넌트

테마 변경 버튼에서 사용하는 아이콘 컴포넌트 입니다.

```tsx
type Theme = "light" | "dark";

type Props = {
  theme: Theme;
};

const ThemeIcon = ({ theme }: Props) => {
  switch (theme) {
    case "light":
      return (
        <svg
          className="w-5 h-5"
          fill="none"
          viewBox="0 0 24 24"
          stroke="currentColor"
        >
          <path
            strokeLinecap="round"
            strokeLinejoin="round"
            strokeWidth={2}
            d="M12 3v1m0 16v1m9-9h-1M4 12H3m15.364 6.364l-.707-.707M6.343 6.343l-.707-.707m12.728 0l-.707.707M6.343 17.657l-.707.707M16 12a4 4 0 11-8 0 4 4 0 018 0z"
          />
        </svg>
      );
    case "dark":
      return (
        <svg
          className="w-5 h-5"
          fill="none"
          viewBox="0 0 24 24"
          stroke="currentColor"
        >
          <path
            strokeLinecap="round"
            strokeLinejoin="round"
            strokeWidth={2}
            d="M20.354 15.354A9 9 0 018.646 3.646 9.003 9.003 0 0012 21a9.003 9.003 0 008.354-5.646z"
          />
        </svg>
      );
  }
};
```


---

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