use much, much simpler logic for adding anchors to h[2-4] elements

assets/js/src/anchor.js

@@ -1,7 +1,23 @@
-import SimpleAnchor from "simple-anchor";
+// Heavily inspired by AnchorJS: https://github.com/bryanbraun/anchorjs
 
-const anchors = new SimpleAnchor({
+// loop through each h2, h3, h4 in this page's content area
-  icon: null,
+document.querySelectorAll(["div#content h2", "div#content h3", "div#content h4"]).forEach((h) => {
+  // don't add to elements without a pre-existing ID (e.g. `<h2 id="...">`)
+  if (!h.hasAttribute("id")) {
+    return;
+  }
+
+  // build the anchor link (the "#" icon is added via CSS)
+  const anchor = document.createElement("a");
+  anchor.className = "anchorjs-link";
+  anchor.href = `#${h.getAttribute("id")}`;
+
+  // if this is a touchscreen, always show the "#" icon instead waiting for hover
+  // NOTE: this is notoriously unreliable; see https://github.com/Modernizr/Modernizr/pull/2432
+  if ("ontouchstart" in window) {
+    anchor.style.opacity = "1";
+  }
+
+  // add anchor link to the right of the heading
+  h.appendChild(anchor);
 });
-
-anchors.add("div#content h2, div#content h3, div#content h4");

package.json

@@ -43,7 +43,6 @@
     "preact": "^10.6.2",
     "query-string": "^7.0.1",
     "rss-parser": "^3.12.0",
-    "simple-anchor": "^1.0.3",
     "trim-newlines": "^4.0.2",
     "twemoji": "^13.1.0",
     "twemoji-emojis": "^14.1.0",

yarn.lock

@@ -8746,11 +8746,6 @@ signal-exit@^3.0.0, signal-exit@^3.0.2, signal-exit@^3.0.3:
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.6.tgz#24e630c4b0f03fea446a2bd299e62b4a6ca8d0af"
   integrity sha512-sDl4qMFpijcGw22U5w63KmD3cZJfBuFlVNbVMKje2keoKML7X2UzWbc4XrmEbDwg0NXJc3yv4/ox7b+JWb57kQ==
 
-simple-anchor@^1.0.3:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/simple-anchor/-/simple-anchor-1.0.3.tgz#9e23e3c53f6cd913e576e44a2b1cb666c4e553d1"
-  integrity sha512-g2CrKyqfxRzEpDuuLWsGaDrN/WlU+oft1xGkiGTUB73SiG4MmqW0YMBibQ32pcu4jpL4fnEotggpMpa+ddVM3g==
-
 simple-git-hooks@^2.7.0:
   version "2.7.0"
   resolved "https://registry.yarnpkg.com/simple-git-hooks/-/simple-git-hooks-2.7.0.tgz#121a5c3023663b8abcc5648c8bfe8619dc263705"