feat: add TypeScript lessons and learning panel

- Introduced a new script to check TypeScript lesson files for errors.
- Created a main TypeScript file to render lessons and their details.
- Added lesson definitions with starter and answer codes.
- Implemented a user interface for navigating and running lessons.
- Styled the application with CSS for a better user experience.
- Updated README to reflect the new TypeScript section and usage instructions.

05-es6-plus/05-promise-basics/README.md

@@ -0,0 +1,24 @@
+# 练习 5：Promise 基础
+
+## 目标
+
+学会用 Promise 表达异步结果。
+
+## 你要练什么
+
+- Promise
+- `.then()`
+- `.catch()`
+
+## 任务
+
+- 调用模拟请求函数
+- 成功时渲染课程数据
+- 失败时渲染错误状态
+
+## 文件
+
+- [starter.html](/Users/lijiaqing/home/wwwroot/front-end-example/05-es6-plus/05-promise-basics/starter.html)
+- [starter.js](/Users/lijiaqing/home/wwwroot/front-end-example/05-es6-plus/05-promise-basics/starter.js)
+- [answer.html](/Users/lijiaqing/home/wwwroot/front-end-example/05-es6-plus/05-promise-basics/answer.html)
+- [answer.js](/Users/lijiaqing/home/wwwroot/front-end-example/05-es6-plus/05-promise-basics/answer.js)