Plugin for GitBook which renders Mermaid diagrams and flow charts detected in the book markdown.

You can use install via NPM:

$ npm install gitbook-plugin-mermaid-2

And use it for your book with in the book.json:

{
    "plugins": ["mermaid-2"],
    "pluginsConfig": {
      "mermaid-2": {
         "theme": "forest" // here to change the mermaid theme
      }
    }
}

Just put the code into fenced code block and tag it mermaid key word like this:

graph TD;
  A-->B;
  A-->C;
  B-->D;
  C-->D;