This is the existing blog-starter plus TypeScript.
The blog posts are stored in /_posts as Markdown files with front matter support. Adding a new Markdown file in there will create a new blog post.
To create the blog posts we use remark and remark-html to convert the Markdown files into an HTML string, and then send it down as a prop to the page. The metadata of every post is handled by gray-matter and also sent in props to the page.
Also the mermaid is supported.
blog-starter uses Tailwind CSS (v3.0).