修复无法使用的问题

src/main.ts

@@ -1,7 +1,9 @@
 import "./meta"
 
 import { ScorePlayerData } from "./types"
-import { getIndexPath } from "./utils"
+import { getIndexPath, waitForDocumentLoaded } from "./utils"
+
+const main = () => {
 
     // @ts-ignore
     const scorePlayer: ScorePlayerData = window.UGAPP.store.jmuse_settings.score_player
@@ -50,3 +52,7 @@ const newDownloadBtns = Object.keys(downloadURLs).map((name) => {
     })
 
     downloadBtn.replaceWith(...newDownloadBtns)
+
+}
+
+waitForDocumentLoaded().then(main)

src/utils.ts

@@ -8,3 +8,17 @@ export const getIndexPath = (id: number) => {
     const indexN = idStr.split("").reverse().slice(0, 3)
     return indexN.join("/")
 }
+
+export const waitForDocumentLoaded = (): Promise<void> => {
+    if (document.readyState !== "complete") {
+        return new Promise(resolve => {
+            document.addEventListener("readystatechange", () => {
+                if (document.readyState == "complete") {
+                    resolve()
+                }
+            }, { once: true })
+        })
+    } else {
+        return Promise.resolve()
+    }
+}