Function assertIsDigitsString

assertIsDigitsString(
input: unknown,
error?: string | Error,
): asserts input is `${number}` | `${bigint}`
Assert that input is a string that contains digits only.
Parameters
- input: unknown
- error: string | Error = 'input is not a string of integers only'
Returns asserts input is `${number}` | `${bigint}`
Example
```
assertIsDigitsString('12345'); // does not throw
assertIsDigitsString('123.45'); // throws TypeError: input is not a string of integers only
```
- Defined in src/assertion/assertIsDigitsString.ts:16