feat: 明确 hook callback 的函数签名

src/hooks/index.ts

@@ -2,11 +2,13 @@ import type { HookConfig, HookEvent } from "../config";
 import readerHook from "./readerHook";
 import fetchHook from "./fetchHook";
 import userHook from "./userHook";
+import bookshelfHook from "./bookshelfHook";
 
 const hooks: HookConfig[] = [
     ...readerHook,
     ...fetchHook,
     ...userHook,
+    ...bookshelfHook,
 ];
 
 async function onEvent(event: HookEvent, previous?: string) {

src/hooks/readerHook.ts

@@ -282,11 +282,11 @@ async function insertContent() {
 }
 
 // let currentBook: Book | null = null
-async function onUrlChange(_previous: string): Promise<void> {
+async function onUrlChange(_previous?: string): Promise<void> {
     // TODO: 记录并上报阅读历史和记录
     await insertContent()
 }
-async function onHashChange(_previous: string): Promise<void> {
+async function onHashChange(_previous?: string): Promise<void> {
     // TODO: 支持从hash里解析并跳转到指定行
 }
 async function onLoad(): Promise<void> {