Function assertIsOptionalBigInt

assertIsOptionalBigInt(
input: unknown,
error?: string | Error,
): asserts input is bigint | undefined
Assert that input is a bigint or undefined.
Parameters
- input: unknown
- error: string | Error = 'input is not an optional bigint'
Returns asserts input is bigint | undefined
Example
```
assertIsOptionalBigInt(10n); // does not throw
assertIsOptionalBigInt(undefined); // does not throw
assertIsOptionalBigInt(10); // throws TypeError: input is not an optional bigint
```
- Defined in src/assertion/assertIsOptionalBigInt.ts:15