--- a/mandarake-direct-link.user.js	Sun Jan 15 23:46:56 2023 +0900
+++ b/mandarake-direct-link.user.js	Sun Jan 15 23:49:35 2023 +0900
@@ -13,47 +13,43 @@
 
 'use strict';
 
-function directLink () {
-  const r18ConfirmLink = '#adult_confirm';
-  function fixR18Link (link) {
-    if (!(link instanceof window.HTMLAnchorElement) || link.getAttribute('href') !== r18ConfirmLink) return;
-
-    link.setAttribute('href', `/order/detailPage/item?itemCode=${link.id}`);
-    link.removeAttribute('class');
-  }
+const r18ConfirmLink = '#adult_confirm';
+function fixR18Link (link) {
+  if (!(link instanceof window.HTMLAnchorElement) || link.getAttribute('href') !== r18ConfirmLink) return;
 
-  function removeR18Mark (node) {
-    if (node.classList.contains('r18mark')) {
-      node.remove();
-      return true;
-    }
+  link.setAttribute('href', `/order/detailPage/item?itemCode=${link.id}`);
+  link.removeAttribute('class');
+}
 
-    for (const mark of node.querySelectorAll('.r18mark')) {
-      mark.remove();
-    }
+function removeR18Mark (node) {
+  if (node.classList.contains('r18mark')) {
+    node.remove();
+    return true;
   }
 
-  function run (node) {
-    if (!(node instanceof window.HTMLElement)) return;
-    if (removeR18Mark(node)) return;
+  for (const mark of node.querySelectorAll('.r18mark')) {
+    mark.remove();
+  }
+}
+
+function run (node) {
+  if (!(node instanceof window.HTMLElement)) return;
+  if (removeR18Mark(node)) return;
 
-    fixR18Link(node);
-    for (const link of node.querySelectorAll(`a[href='${r18ConfirmLink}']`)) {
-      fixR18Link(link);
+  fixR18Link(node);
+  for (const link of node.querySelectorAll(`a[href='${r18ConfirmLink}']`)) {
+    fixR18Link(link);
+  }
+}
+
+function onMutate (mutations) {
+  for (const mutation of mutations) {
+    for (const node of mutation.addedNodes) {
+      run(node);
     }
   }
-
-  function onMutate (mutations) {
-    for (const mutation of mutations) {
-      for (const node of mutation.addedNodes) {
-        run(node);
-      }
-    }
-  }
-
-  const observer = new window.MutationObserver(onMutate);
-  observer.observe(document, { childList: true, subtree: true });
-  run(document.body);
 }
 
-directLink();
+const observer = new window.MutationObserver(onMutate);
+observer.observe(document, { childList: true, subtree: true });
+run(document.body);