index.js
function extract(str, options) {
  const res = babylon.parse(str, options);
  return res.comments;
}
function extract(str, options) {
  const res = babylon.parse(str, options);
  return res.comments;
}
Extract code comments from the given `string`.

```js
var extract = require('babel-extract-comments');
console.log(extract('// this is a code comment'));
// [{ type: 'CommentBlock',
//  value: '!\n * babel-extract-comments <https://github.com/jonschlinkert/babel-extract-comments>\n *\n *
// Copyright (c) 2014-2018, Jon Schlinkert.\n * Released under the MIT License.\n ',
//   start: 0,
//   end: 173,
//   loc: SourceLocation { start: [Position], end: [Position] } }]
```
@param  {String} `string` String of javascript
@return {Array} Array of code comment objects.
@api public