fix: added _includes

_includes/mermaid.html

@@ -0,0 +1,58 @@
+<!-- mermaid-js loader -->
+<script type="text/javascript">
+  (function () {
+    function updateMermaid(event) {
+      if (event.source === window && event.data && event.data.direction === ModeToggle.ID) {
+        const mode = event.data.message;
+
+        if (typeof mermaid === 'undefined') {
+          return;
+        }
+
+        let expectedTheme = mode === ModeToggle.DARK_MODE ? 'dark' : 'default';
+        let config = { theme: expectedTheme };
+
+        /* Re-render the SVG › <https://github.com/mermaid-js/mermaid/issues/311#issuecomment-332557344> */
+        $('.mermaid').each(function () {
+          let svgCode = $(this).prev().children().html();
+          $(this).removeAttr('data-processed');
+          $(this).html(svgCode);
+        });
+
+        mermaid.initialize(config);
+        mermaid.init(undefined, '.mermaid');
+      }
+    }
+
+    let initTheme = 'default';
+    const html = document.documentElement;
+
+    if (
+      (html.hasAttribute('data-mode') && html.getAttribute('data-mode') === 'dark') ||
+      (!html.hasAttribute('data-mode') && window.matchMedia('(prefers-color-scheme: dark)').matches)
+    ) {
+      initTheme = 'dark';
+    }
+
+    let mermaidConf = {
+      theme: initTheme /* <default|dark|forest|neutral> */
+    };
+
+    /* Create mermaid tag */
+    document.querySelectorAll('pre>code.language-mermaid').forEach((elem) => {
+      const svgCode = elem.textContent;
+      const backup = elem.parentElement;
+      backup.classList.add('unloaded');
+      /* create mermaid node */
+      let mermaid = document.createElement('pre');
+      mermaid.classList.add('mermaid');
+      const text = document.createTextNode(svgCode);
+      mermaid.appendChild(text);
+      backup.after(mermaid);
+    });
+
+    mermaid.initialize(mermaidConf);
+
+    window.addEventListener('message', updateMermaid);
+  })();
+</script>