Function singular

singular<T extends string>(val: T): SingularUnit<T>
Strips a plural 's' suffix from a string if it ends with 's' and is longer than 3 characters.
Type Parameters
- T extends string
Parameters
- val: T
  The plural string
Returns SingularUnit<T>
The singular string
Example
```
singular('apples'); // 'apple'
```
- Defined in packages/library/src/common/string.library.ts:190