javascript regex: `foo` -> **foo**? -

basically, hack markdown engine own website.

now, i'm trying convert string wrapped single `

`foo`  

to

 **foo** 

using regex , far, can think of

    var data = data0.replace(/`.*`/g, '...'); 

and obviously, not work intend.

and markdown has

```  ``` 

format, , want untouched- exclude regex match.

can advise regex be?

thank you.

this attempt @ simple, clean regex:

regex string

`\b(.*?)\b`(?!`) 

replace string

**$1** 

online demonstration

regex101