# assertTypeBigInt

Source: https://smartassertions.dev/assertions/assertTypeBigInt/
Index of every page: https://smartassertions.dev/llms.txt

Asserts that a value is a bigint, with type-narrowing.

## Usage

```ts
import { assertTypeBigInt } from "@kensio/smartass";

const value: unknown = 1n;

assertTypeBigInt(value);

// value is now narrowed to bigint
```

## Source

Source file: [`src/assert/type-bigint/type-bigint.assert.ts`](https://github.com/KensioSoftware/smartass/blob/main/src/assert/type-bigint/type-bigint.assert.ts)