Function NegativeBigInt

NegativeBigInt(options?): PropertyDecorator
Checks if the given value is a BigInt less than zero.

Example
```
// Ensure the value is less than 0.
@NegativeBigInt()
negativeNumber: BigInt
```
Parameters
- Optional options: ValidationOptions
  Generic class-validator options.
Returns PropertyDecorator
- Defined in src/bigint/negative-bigint/negative-bigint.decorator.ts:23