feat: export theme getter and setter

lib/handle-toggle-click.ts

@@ -1,6 +1,8 @@
+import { getTheme, setTheme } from './theme'
+
 function toggleTheme() {
-  const theme = window.themeToggle?.getTheme?.()
-  window.themeToggle?.setTheme?.(theme === 'light' ? 'dark' : 'light')
+  const theme = getTheme()
+  setTheme(theme === 'light' ? 'dark' : 'light')
 }
 
 async function startCircleAnimation(

lib/index.ts

@@ -1,2 +1,3 @@
 export { handleToggleClick } from './handle-toggle-click'
+export { getTheme, setTheme } from './theme'
 export { default as ThemeScript } from './theme-script.astro'

lib/theme.ts

@@ -0,0 +1,13 @@
+export function getTheme(): 'light' | 'dark' {
+  if (typeof window === 'undefined') {
+    return 'light'
+  }
+  return window.themeToggle?.getTheme?.() || 'light'
+}
+
+export function setTheme(theme: 'light' | 'dark') {
+  if (typeof window === 'undefined') {
+    return
+  }
+  window.themeToggle?.setTheme?.(theme)
+}