We could check if in a post have more tags with or without hash

[stephanemalho]

A user should be able to write a tag with or without #, or write multiple tags without worrying about the final rendering. For this, it would be interesting to add this:

[collinsedim]

You can just shorten your code length by doing this instead:

{post.tag.includes("#") ? post.tag : `#${post.tag}`}

This way, whether or not a user remembers to include '#', it's not gon be an issue.