minigame-std
Version:
Mini Game Standard Development Library.
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[**minigame-std**](../README.md)
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[minigame-std](../README.md) / FailType
# Type Alias: FailType\<T\>
```ts
type FailType<T> = T extends (params) => any ? P extends {
fail: (err) => any;
} ? E : never : never;
```
Defined in: [src/std/utils/promisify.ts:30](https://github.com/JiangJie/minigame-std/blob/fdb22241c47c2e98329a4c62befde728957e03ee/src/std/utils/promisify.ts#L30)
类型工具：提取失败回调参数类型。
## Type Parameters
| Type Parameter |
| ------ |
| `T` |