indexDB TS二次封装

以下是一个简单的IndexedDB二次封装的示例，使用TypeScript编写。这个封装提供了打开数据库、创建或访问对象存储空间以及执行简单的CRUD操作的方法。

type DBName = 'myDatabase';
type StoreName = 'myStore';
 
class IndexedDBManager {
    private dbName: DBName;
    private storeName: StoreName;
 
    constructor(dbName: DBName, storeName: StoreName) {
        this.dbName = dbName;
        this.storeName = storeName;
    }
 
    // 打开数据库
    openDatabase(): IDBOpenDBRequest {
        return indexedDB.open(this.dbName);
    }
 
    // 创建或访问对象存储空间
    createObjectStore(db: IDBDatabase): void {
        if (!db.objectStoreNames.contains(this.storeName)) {
            const objectStore = db.createObjectStore(this.storeName, { autoIncrement: true });
            // 可以在这里定义索引
        }
    }
 
    // 添加记录
    addRecord(value: any): IDBRequest {
        return this.openDatabase().onupgradeneeded = (e: IDBVersionChangeEvent) => {
            this.createObjectStore(e.target.result);
        }.onsuccess = (e: Event) => {
            const db = e.target.result;
            const transaction = db.transaction(this.storeName, 'readwrite');
            const store = transaction.objectStore(this.storeName);
            const request = store.add(value);
            request.onsuccess = () => console.log('Record added successfully');
            request.onerror = (e) => console.log('Failed to add record:', e.target.errorCode);
        };
    }
 
    // 获取记录
    getRecord(key: any): IDBRequest {
        return this.openDatabase().onupgradeneeded = (e: IDBVersionChangeEvent) => {
            this.createObjectStore(e.target.result);
        }.onsuccess = (e: Event) => {
            const db = e.target.result;
            const transaction = db.transaction(this.storeName, 'readonly');
            const store = transaction.objectStore(this.storeName);
            const request = store.get(key);
            request.onsuccess = (e) => console.log('Record retrieved successfully:', e.target.result);
            request.onerror = (e) => console.log('Failed to retrieve record:', e.target.errorCode);
        };
    }
 
    // 更新记录
    updateRecord(key: any, value: any): IDBRequest {