White listing 'hr' does not render it correctly

[sunkibaek]

While below renders as expected:

        <Markdown
          styles={{ text: textStyle }}
        >
          hello{'\n'}
          ---{'\n'}
          world
        </Markdown>

putting 'hr' in whitelist does not parse --- into hr

        <Markdown
          styles={{ text: textStyle }}
          whitelist={['hr']}
        >
          hello{'\n'}
          ---{'\n'}
          world
        </Markdown>

Seems like I am missing something obvious -- any advice?

[CharlesMangwa]

The whitelist/blacklist feature is just here to specify if you want to use the default style or not, as explained here :)