Function defaultIfBlank

defaultIfBlank(
text?: string | null,
defaultValue?: string | null,
): string | null | undefined
Returns the default value if the given text is blank, or the text self if it is not blank
Parameters
- Optionaltext: string | null
  The text to check
- OptionaldefaultValue: string | null
  The default value placeholder
Returns string | null | undefined
the default value if the given text is blank, or the text self if it is not blank
Author
David Hsing
Example
```
defaultIfBlank(undefined, 'foobar');    // 'foobar'
```