Function isNotBigint

isNotBigint<T>(u: T): u is RelaxedExclude<T, bigint>
Type guard that checks if a value is not a bigint.

Type Narrowing Behavior:
- Excludes bigint from the input type when true
- Preserves all other types in the union
Type Parameters
- T
  The type of the input value
Parameters
- u: T
  The value to check
Returns u is RelaxedExclude<T, bigint>
true if u is not a bigint, false otherwise. When true, TypeScript excludes bigint from the type.
Example
```
const values: unknown[] = [1n, 2, 3n];

const nonBigints = values.filter(isNotBigint);

assert.deepStrictEqual(nonBigints, [2]);
```
- Defined in src/guard/is-type.mts:200