Function err

err<T>(error: void): Result<T, void>
Creates an Err variant of a Result with a void error.

Wraps undefined in a CheckedError within an Err, indicating a failed outcome with no error value for a checked Result.
Type Parameters
- T
  The type of the potential value.
Parameters
- error: void
  The void error (typically omitted or undefined).
Returns Result<T, void>
A Result containing undefined as Err.

Example
```
const x = err<number>();

expect(x.isErr()).toBe(true);
expect(x.unwrapErr().expected).toBeUndefined();
expect(x.unwrapErr().unexpected).toBeUndefined();
```
- Defined in packages/std/src/result/result.ts:95
err<T, E>(error: E | CheckedError<E>): Result<T, E>
Creates an Err variant of a Result containing the given error.

Wraps the provided error in a CheckedError within an Err, indicating a failed outcome for a checked Result. This function accepts raw errors, ResultError, or CheckedError.
- If called with an error of type E, it creates an ExpectedError variant.
- If called with a CheckedError, it uses the error as is.
Type Parameters
- T
  The type of the potential value.
- E
  The type of the expected error.
Parameters
- error: E | CheckedError<E>
  The error to wrap in Err, as a raw E, ResultError, or CheckedError.
Returns Result<T, E>
A Result containing the error as Err.

Example
```
const oops = new ResultError("err", ResultErrorKind.Unexpected);
const x = err<number, string>("failure");
const y = err<number, string>(oops);

expect(x.isErr()).toBe(true);
expect(x.unwrapErr().expected).toBe("failure");
expect(y.unwrapErr().unexpected).toBe(oops);
```
- Defined in packages/std/src/result/result.ts:122