# common.safeInteger

- **Module:** common
- **Package:** libtmux
- **Language:** TypeScript
- **Kind:** function
- **Source:** https://github.com/libtmux/libtmux-ts/blob/46cccfef2a546de55ce8b308249b8c76339089a0/packages/libtmux/src/common.ts#L74
- **Page:** https://libtmux.org/en/ts/latest/reference/common-safeinteger-solv/

```
function safeInteger(value: number): SafeInteger
```

Authenticate an exact JavaScript integer or throw.

## Examples

```ts
import { safeInteger } from "libtmux";
const pid = safeInteger(42);
```

## Parameters

- `value` (`number`)

## Raises

- [`TypeError`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypeError): when `value` is fractional, infinite, `NaN`, or outside JavaScript's safe integer range.