Incorrect type definition for FileHeaderArgs.commentStyle

[ZeekoZhu]

FileHeaderArgs.commentStyle should be optional

style-dictionary/lib/common/formatHelpers/fileHeader.js

Line 33 in 3570dfc

* @param {String} options.commentStyle - The only options are 'short' and 'xml', which will use the // or \<!-- --> style comments respectively. Anything else will use \/\* style comments.

However, its current type definition is:

export interface FileHeaderArgs {
  file: File;
  commentStyle: string;
  formatting?: CommentFormatting;
}

This cause an error when you want to use /* style by omiting commentStyle.

And, BTW, the example of fileHeader has syntax error:

style-dictionary/lib/common/formatHelpers/fileHeader.js

Line 41 in 3570dfc

* return fileHeader({file, 'short') +

It should be:

return fileHeader({file, commentStyle: 'short'}) +