refactor(chapter): PKG-CHAPTER-03 split runtime into typed lifecycle and view modules

packages/artplayer-plugin-chapter/src/stylesheet.ts

@@ -0,0 +1,21 @@
+import style from './style.less?inline'
+
+export function installStyle() {
+  if (typeof document === 'undefined')
+    return
+
+  const id = 'artplayer-plugin-chapter'
+  const install = () => {
+    let element = document.getElementById(id)
+    if (!element) {
+      element = document.createElement('style')
+      element.id = id
+      ;(document.head || document.documentElement).appendChild(element)
+    }
+    element.textContent = style
+  }
+  if (document.getElementById(id) || document.readyState !== 'loading')
+    install()
+  else
+    document.addEventListener('DOMContentLoaded', install, { once: true })
+}