[ts-types-lang](../README.md) / [Modules](../modules.md) / [sys](../modules/sys.md) / JsExpr

# Interface: JsExpr<_Expr\>

[sys](../modules/sys.md).JsExpr

Generic interface for declaring effects

**`Example`**

```ts
interface MyEffect extends Effect<string[]> {}
```

## Type parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `_Expr` | extends `string` | The output generated by the effect (defaults to `unknown`) |

## Hierarchy

- [`Effect`](effect.Effect.md)<`any`\>

  ↳ **`JsExpr`**