Function retry

retry<T>(
    fn: () => Promise<T>,
    options?: {
        backoffFactor?: number;
        delayMs?: number;
        maxAttempts?: number;
        shouldRetry?: (error: unknown, attempt: number) => boolean;
    },
): Promise<T>
重试执行异步函数，支持指数退避策略 Retry an asynchronous function with exponential backoff support
Type Parameters
- T
  函数返回的 Promise 类型 / The Promise type returned by the function
Parameters
- fn: () => Promise<T>
  需要重试的异步函数 / The asynchronous function to retry
- options: {
      backoffFactor?: number;
      delayMs?: number;
      maxAttempts?: number;
      shouldRetry?: (error: unknown, attempt: number) => boolean;
  } = {}
  重试配置选项 / Retry configuration options
  - OptionalbackoffFactor?: number
    退避因子，每次重试延迟时间乘以此值 / Backoff factor, delay multiplies by this each retry
  - OptionaldelayMs?: number
    初始延迟时间（毫秒） / Initial delay in milliseconds
  - OptionalmaxAttempts?: number
    最大尝试次数 / Maximum number of attempts
  - OptionalshouldRetry?: (error: unknown, attempt: number) => boolean
    判断是否应该重试的函数 / Function to determine if should retry
Returns Promise<T>
成功执行的结果 / Successfully executed result
Throws
最后一次尝试的错误或达到最大重试次数时的错误 / Last attempt error or error when max retries reached
Example
```
// 基本用法 / Basic usage
const result = await retry(() => fetchData());
```
Example
```
// 自定义配置 / Custom configuration
const result = await retry(() => apiCall(), {
  maxAttempts: 5,
  delayMs: 500,
  backoffFactor: 1.5,
  shouldRetry: (error, attempt) => error.status !== 404
});
```
- Defined in src/promise.ts:96