Function replaceAll

replaceAll(
    text?: null | string,
    search?: null | string | RegExp,
    replace?: null | string,
): undefined | null | string
Returns the string that replaced all occurrences in the given text
Parameters
- Optionaltext: null | string
  the text to inspect
- Optionalsearch: null | string | RegExp
  the string or regex to match
- Optionalreplace: null | string
  the expected replacement string
Returns undefined | null | string
the string that replaced all occurrences in the given text
Author
David Hsing
Example
```
replaceAll(undefined, undefined, undefined);    // undefined
replaceAll('foobar-foobar', undefined, 'hello');    // 'foobar-foobar'
replaceAll('foobar-foobar', 'foobar', 'hello');    // 'hello-hello'
```