Fix to improve removal of whitespace between tables

[TheComp44]

Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and couldn’t find anything (or linked relevant results below)
• If applicable, I’ve added docs and tests

Description of changes

#29 added a fix to remove whitespace nodes from tables, since they caused a warning in React (#28). Though the check for strings containing just a newline is too specific, because whitespace nodes can consist of arbitrary combinations of newlines, tabs and spaces.

When using rehype-parse and rehype-react to transform html documents containing tables that have indentation, react still gives a warning for whitespace within a table, because the check fails here.

I used a more robust check to filter out nodes containing only whitespace that will work for any combination of whitespace characters.

I also added a test to check for whitespace removal on tables.

[wooorm]

👍

Can you use hast-util-whitespace? https://github.com/syntax-tree/hast-util-whitespace.
Because JavaScript whitespace is not the same as HTML whitespace

[TheComp44]

Can you use hast-util-whitespace? https://github.com/syntax-tree/hast-util-whitespace.
Because JavaScript whitespace is not the same as HTML whitespace

Probably a better solution, but then it has to be moved from the h-function as it receives elements and not HAST-nodes.

Will look into it tomorrow

[wooorm]

That utility supports both strings and nodes, so it should work I think!

[TheComp44]

Ah gotcha. Overlooked that part.

Using the utility now and it seems to work!

[wooorm]

Thanks, released!