Function asNonEmptyString

asNonEmptyString<S extends string>(
    s: S,
): string & Readonly<{ MinLength: readonly [0, 0] }> & Readonly<
    {
        "TSTypeForgeInternals--edd2f9ce-7ca5-45b0-9d1a-bd61b9b5d9c3": unknown;
    },
> & S
Casts a string to NonEmptyString after checking that it has at least one character.

NonEmptyString is an alias of MinLengthString<1>, so this is the length-1 specialization of asMinLengthString. Use this instead of writing s as unknown as NonEmptyString: the length is verified at runtime, and the original string type (e.g. literal types) is preserved via intersection.
Type Parameters
- S extends string
  The input string type (literal types are preserved).
Parameters
- s: S
  The string to cast.
Returns string & Readonly<{ MinLength: readonly [0, 0] }> & Readonly<
    {
        "TSTypeForgeInternals--edd2f9ce-7ca5-45b0-9d1a-bd61b9b5d9c3": unknown;
    },
> & S
s typed as NonEmptyString & S.
Example
```
const name = Str.asNonEmptyString('noshiro');

const nonEmpty: NonEmptyString = name; // OK

assert.isTrue(nonEmpty.length >= 1);

assert.throws(() => Str.asNonEmptyString('')); // length 0 < 1
```
Throws
If s is empty.
- Defined in packages/ts-data-forge/src/string/str.mts:537