# ArithmeticOptions

`import { ArithmeticOptions } from "destack:time";`

Options for date and time arithmetic.

```ds title="ArithmeticOptions"
export type ArithmeticOptions = { overflow?: "constrain" | "reject" }
```

[language/library/src/time/option.ds:18:21](https://github.com/destack-sh/destack/blob/main/language/library/src/time/option.ds#L18-L21)