Refactor server and templates package

internal/dis/component/server/assets/src/lib/autolink/index.css

@@ -0,0 +1,22 @@
+.header-link {
+    position: relative;
+    left: 0.5em;
+    opacity: 0;
+    font-size: 0.8em;
+
+    transition: opacity 0.2s ease-in-out 0.1s;
+    -webkit-transition: opacity 0.2s ease-in-out 0.1s;
+    -moz-transition: opacity 0.2s ease-in-out 0.1s;
+    -ms-transition: opacity 0.2s ease-in-out 0.1s;
+
+    text-decoration: none;
+}
+
+h2:hover .header-link,
+h3:hover .header-link,
+h4:hover .header-link,
+h5:hover .header-link,
+h6:hover .header-link {
+    color: black !important;
+    opacity: 1;
+}

internal/dis/component/server/assets/src/lib/autolink/index.ts

@@ -0,0 +1,21 @@
+import "./index.css"
+
+/** Adapted from http://blog.parkermoore.de/2014/08/01/header-anchor-links-in-vanilla-javascript-for-github-pages-and-jekyll/ */
+const anchorForId = (id: string) => {
+    const anchor = document.createElement("a")
+    anchor.className = "header-link"
+    anchor.href = "#" + id
+    anchor.innerHTML = "#"
+    return anchor
+}
+
+const linkifyAnchors = (level: number) => {
+    const headers = document.getElementsByTagName("h" + level);
+    Array.from(headers).forEach((header) => {
+        if (typeof header.id === "undefined" || header.id === "") return
+        header.appendChild(anchorForId(header.id))
+    })
+}
+
+// linkify all the anchors from 1 ... 6
+(new Array(6)).fill(0).forEach((_, i) => linkifyAnchors(i + 1))