diff --git a/README.md b/README.md
index 0fffd40d2..0ea91ef5c 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,9 @@ The 4chan XT project is a migration of 4chan X from coffeescript to TypeScript/J
 
 ## Other notes
 
-- A lot of files have circular dependencies, but rollup can handle that, but for some scripts that add to the same object I had to merge them, like Posting/QR and site/SW.yotsuba.js
+- A lot of files have circular dependencies, but rollup can handle that
+  - but for some scripts that add to the same object I had to merge them, like Posting/QR and site/SW.yotsuba.js
+  - sometimes something might not be initialized before use
 - tsconfig.json has `"checkJs": true,`, and a lot of js files report type errors when opened because of unknown properties on objects and reassigning variables with different types. These errors don't block the bundle at this moment.
 - old files in the builds directory stay as reference until the new builds are functional, new files go in the builds/test directory
 - old build scripts are also kept around for reference until the new build output is fully functional
diff --git a/src/Filtering/Recursive.js b/src/Filtering/Recursive.js
index 4eb0c2521..faa5ceb3a 100644
--- a/src/Filtering/Recursive.js
+++ b/src/Filtering/Recursive.js
@@ -1,6 +1,5 @@
 import Callbacks from "../classes/Callbacks";
 import { g } from "../globals/globals";
-import $ from "../platform/$";
 
 /*
  * decaffeinate suggestions:
@@ -9,7 +8,7 @@ import $ from "../platform/$";
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/main/docs/suggestions.md
  */
 const Recursive = {
-  recursives: $.dict(),
+  recursives: Object.create(null),
   init() {
     if (!['index', 'thread'].includes(g.VIEW)) { return; }
     return Callbacks.Post.push({
diff --git a/src/General/Index.js b/src/General/Index.js
index 182314cd8..7616f9b36 100644
--- a/src/General/Index.js
+++ b/src/General/Index.js
@@ -1,6 +1,5 @@
 /*
  * decaffeinate suggestions:
- * DS101: Remove unnecessary use of Array.from
  * DS102: Remove unnecessary code created because of implicit returns
  * DS205: Consider reworking code to avoid use of IIFEs
  * DS207: Consider shorter variations of null checks
@@ -30,6 +29,7 @@ import Menu from '../Menu/Menu';
 import NavLinksPage from './Index/NavLinks.html';
 import PageListPage from './Index/PageList.html';
 import BoardConfig from './BoardConfig';
+import Get from './Get';
 
 const Index = {
   showHiddenThreads: false,
@@ -316,7 +316,7 @@ const Index = {
 
   cycleSortType() {
     let i;
-    const types = [...Array.from(Index.selectSort.options)].filter(option => !option.disabled);
+    const types = Index.selectSort.options.filter(option => !option.disabled);
     for (i = 0; i < types.length; i++) {
       var type = types[i];
       if (type.selected) { break; }
@@ -378,7 +378,7 @@ const Index = {
     },
 
     lastLongThresholds() {
-      const i = [...Array.from(this.parentNode.children)].indexOf(this);
+      const i = Array.from(this.parentNode.children).indexOf(this);
       const value = +this.value;
       if (!Number.isFinite(value)) {
         this.value = Index.lastLongThresholds[i];
@@ -692,14 +692,14 @@ const Index = {
     const pagesRoot = $('.pages', Index.pagelist);
 
     // Previous/Next buttons
-    const prev = pagesRoot.previousSibling.firstChild;
-    const next = pagesRoot.nextSibling.firstChild;
+    const prev = pagesRoot.previousElementSibling.firstElementChild;
+    const next = pagesRoot.nextElementSibling.firstElementChild;
     let href = Math.max(pageNum - 1, 1);
     prev.href = href === 1 ? './' : href;
-    prev.firstChild.disabled = href === pageNum;
+    prev.firstElementChild.disabled = href === pageNum;
     href = Math.min(pageNum + 1, maxPageNum);
     next.href = href === 1 ? './' : href;
-    next.firstChild.disabled = href === pageNum;
+    next.firstElementChild.disabled = href === pageNum;
 
     // <strong> current page
     if (strong = $('strong', pagesRoot)) {
@@ -1065,15 +1065,15 @@ const Index = {
           }
           return [...Array.from(liveThreadData)].sort((a, b) => lastlongD[b.no] - lastlongD[a.no]).map(post => post.no);
         case 'bump': return liveThreadIDs;
-        case 'birth': return [...Array.from(liveThreadIDs)].sort((a, b) => b - a);
-        case 'replycount': return [...Array.from(liveThreadData)].sort((a, b) => b.replies - a.replies).map(post => post.no);
-        case 'filecount': return [...Array.from(liveThreadData)].sort((a, b) => b.images - a.images).map(post => post.no);
-        case 'activity': return [...Array.from(liveThreadData)].sort((a, b) => ((tmp_time - a.time) / (a.replies + 1)) - ((tmp_time - b.time) / (b.replies + 1))).map(post => post.no);
+        case 'birth': return Array.from(liveThreadIDs).sort((a, b) => b - a);
+        case 'replycount': return Array.from(liveThreadData).sort((a, b) => b.replies - a.replies).map(post => post.no);
+        case 'filecount': return Array.from(liveThreadData).sort((a, b) => b.images - a.images).map(post => post.no);
+        case 'activity': return Array.from(liveThreadData).sort((a, b) => ((tmp_time - a.time) / (a.replies + 1)) - ((tmp_time - b.time) / (b.replies + 1))).map(post => post.no);
         default: return liveThreadIDs;
       }
     })();
     if (/-rev$/.test(Index.currentSort)) {
-      Index.sortedThreadIDs = [...Array.from(Index.sortedThreadIDs)].reverse();
+      Index.sortedThreadIDs = Array.from(Index.sortedThreadIDs).reverse();
     }
     if (Index.search && (threadIDs = Index.querySearch(Index.search))) {
       Index.sortedThreadIDs = threadIDs;
diff --git a/src/Images/Gallery.js b/src/Images/Gallery.js
index d8f2196ae..956d6bdc0 100644
--- a/src/Images/Gallery.js
+++ b/src/Images/Gallery.js
@@ -17,6 +17,7 @@ import Volume from './Volume';
 import Header from '../General/Header';
 import { Conf, g } from '../globals/globals';
 import UI from '../General/UI';
+import Get from '../General/Get';
 
 const Gallery = {
   init() {
diff --git a/src/Miscellaneous/RelativeDates.js b/src/Miscellaneous/RelativeDates.js
index 79f217a0e..d4c92b5d8 100644
--- a/src/Miscellaneous/RelativeDates.js
+++ b/src/Miscellaneous/RelativeDates.js
@@ -11,7 +11,7 @@ import $ from "../platform/$";
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/main/docs/suggestions.md
  */
 const RelativeDates = {
-  INTERVAL: $.MINUTE / 2,
+  INTERVAL: 30000,
 
   init() {
     if (
diff --git a/src/Posting/Captcha.t.js b/src/Posting/Captcha.t.js
index a559bc1c9..428198d6e 100644
--- a/src/Posting/Captcha.t.js
+++ b/src/Posting/Captcha.t.js
@@ -1,3 +1,4 @@
+import { g } from "../globals/globals";
 import $ from "../platform/$";
 import QR from "./QR";
 
diff --git a/src/classes/Callbacks.js b/src/classes/Callbacks.js
index c93561010..01dbd54c6 100644
--- a/src/classes/Callbacks.js
+++ b/src/classes/Callbacks.js
@@ -1,3 +1,5 @@
+import Main from "../main/Main";
+
 export default class Callbacks {
   static Post = new Callbacks('Post');
   static Thread = new Callbacks('Thread');
diff --git a/src/classes/CatalogThread.js b/src/classes/CatalogThread.js
index 2cb43a69f..9acfd8a72 100644
--- a/src/classes/CatalogThread.js
+++ b/src/classes/CatalogThread.js
@@ -1,3 +1,5 @@
+import $ from "../platform/$";
+
 export default class CatalogThread {
   toString() { return this.ID; }
 
diff --git a/src/classes/CatalogThreadNative.js b/src/classes/CatalogThreadNative.js
index 6f2198f5e..6289ad3fd 100644
--- a/src/classes/CatalogThreadNative.js
+++ b/src/classes/CatalogThreadNative.js
@@ -1,3 +1,8 @@
+import { g } from "../globals/globals";
+import $ from "../platform/$";
+import Board from "./Board";
+import Thread from "./Thread";
+
 export default class CatalogThreadNative {
   toString() { return this.ID; }
 
diff --git a/src/classes/Post.js b/src/classes/Post.js
index bab2b6d7e..99f3668df 100644
--- a/src/classes/Post.js
+++ b/src/classes/Post.js
@@ -11,8 +11,14 @@ import Callbacks from "./Callbacks";
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/main/docs/suggestions.md
  */
 export default class Post {
-  // \u00A0 is nbsp
-  static deadMark = $.el('span', { textContent: '\u00A0(Dead)', className: 'qmark-dead' });
+  // because of a circular dependency $ might not be initialized, so we can't use $.el
+  static deadMark = (() => {
+    const el = document.createElement('span');
+    // \u00A0 is nbsp
+    el.textContent = '\u00A0(Dead)';
+    el.className = 'qmark-dead';
+    return el;
+  })();
 
   toString() { return this.ID; }
 
diff --git a/src/platform/$.js b/src/platform/$.js
index 9f16e2f02..dbe110b8d 100644
--- a/src/platform/$.js
+++ b/src/platform/$.js
@@ -239,7 +239,7 @@ $.ajax = (function () {
       return req;
     };
   }
-});
+})();
 
 // Status Code 304: Not modified
 // With the `If-Modified-Since` header we only receive the HTTP headers and no body for 304 responses.
diff --git a/src/platform/CrossOrigin.js b/src/platform/CrossOrigin.js
index c947379dc..09ef5c015 100644
--- a/src/platform/CrossOrigin.js
+++ b/src/platform/CrossOrigin.js
@@ -1,3 +1,4 @@
+import QR from "../Posting/QR";
 import $ from "./$";
 
 /*
@@ -8,9 +9,9 @@ import $ from "./$";
  * DS207: Consider shorter variations of null checks
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/main/docs/suggestions.md
  */
+let eventPageRequest;
 if (globalThis.chrome?.extension) {
-  let Request;
-  const eventPageRequest = (function () {
+  eventPageRequest = (function () {
     const callbacks = [];
     chrome.runtime.onMessage.addListener(function (response) {
       callbacks[response.id](response.data);
@@ -107,34 +108,29 @@ const CrossOrigin = {
     });
   },
 
-  Request: (Request = (function () {
-    Request = class Request {
-      static initClass() {
-        this.prototype.status = 0;
-        this.prototype.statusText = '';
-        this.prototype.response = null;
-        this.prototype.responseHeaderString = null;
-      }
-      getResponseHeader(headerName) {
-        if ((this.responseHeaders == null) && (this.responseHeaderString != null)) {
-          this.responseHeaders = $.dict();
-          for (var header of this.responseHeaderString.split('\r\n')) {
-            var i;
-            if ((i = header.indexOf(':')) >= 0) {
-              var key = header.slice(0, i).trim().toLowerCase();
-              var val = header.slice(i + 1).trim();
-              this.responseHeaders[key] = val;
-            }
+  Request: class Request {
+    static status = 0;
+    static statusText = '';
+    static response = null;
+    static responseHeaderString = null;
+
+    getResponseHeader(headerName) {
+      if ((this.responseHeaders == null) && (Request.responseHeaderString != null)) {
+        this.responseHeaders = $.dict();
+        for (var header of Request.responseHeaderString.split('\r\n')) {
+          var i;
+          if ((i = header.indexOf(':')) >= 0) {
+            var key = header.slice(0, i).trim().toLowerCase();
+            var val = header.slice(i + 1).trim();
+            this.responseHeaders[key] = val;
           }
         }
-        return this.responseHeaders?.[headerName.toLowerCase()] ?? null;
       }
-      abort() { }
-      onloadend() { }
-    };
-    Request.initClass();
-    return Request;
-  })()),
+      return this.responseHeaders?.[headerName.toLowerCase()] ?? null;
+    }
+    abort() { }
+    onloadend() { }
+  },
 
   // Attempts to fetch `url` using cross-origin privileges, if available.
   // Interface is a subset of that of $.ajax.
diff --git a/src/site/SW.yotsuba.Build/PostInfoHtml.js b/src/site/SW.yotsuba.Build/PostInfoHtml.js
index a9f34dcf2..ddb99879e 100644
--- a/src/site/SW.yotsuba.Build/PostInfoHtml.js
+++ b/src/site/SW.yotsuba.Build/PostInfoHtml.js
@@ -11,8 +11,8 @@ export default function generatePostInfoHtml(
   output += `<input type="checkbox" name="${ID}" value="delete">`;
 
   if (!o.isReply || boardID === "f" || subject) output += `<span class="subject">${E(subject || "")}</span>`;
-  output += `<span class="nameBlock${capcode ? ` capcode${capcode}` : ''}">`;
-  if (email) output += `<a href="mailto:${encodeURIComponent(email).replace(/%40/g, "@")}" class="useremail">`;
+  output += `<span class="nameBlock${capcode ? ` capcode${E(capcode)}` : ''}">`;
+  if (email) output += `<a href="mailto:${E(encodeURIComponent(email).replace(/%40/g, "@"))}" class="useremail">`;
   output += `<span class="name ${capcode ? E(capcode) : ''}">${E(name)}</span>`;
   if (tripcode) output += ` <span class="postertrip">${E(tripcode)}</span>`;
   if (pass) output += ` <span title="Pass user since ${E(pass)}" class="n-pu"></span>`;
@@ -26,14 +26,14 @@ export default function generatePostInfoHtml(
     output +=
       ` <img src="${staticPath}${capcodeLC}icon${gifIcon}" alt="${E(capcode)} Icon" title="This user is ${E(capcodeDescription)}." class="identityIcon retina">`;
   }
-  if (!(uniqueID && !capcode)) {
+  if (uniqueID && !capcode) {
     output +=
       `<span class="posteruid id_${E(uniqueID)}">(ID: <span class="hand" title="Highlight posts by this ID">${E(uniqueID)}</span>)</span>`;
   }
   if (flagCode) output += ` <span title="${flag}" class="flag flag-${flagCode.toLowerCase()}"></span>`;
   if (flagCodeTroll) output += ` <span title="${flag}" class="bfl bfl-${flagCodeTroll.toLowerCase()}"></span>`;
   output += `</span>
-  <span class="dateTime" data-utc="${dateUTC}">${E(dateText)}</span>
+  <span class="dateTime" data-utc="${E(dateUTC)}">${E(dateText)}</span>
   <span class="postNum${!(boardID === "f" && !o.isReply) ? ' desktop' : ''}">
     <a href="${postLink}" title="Link to this post">No.</a>
     <a href="${quoteLink}" title="Reply to this post">${ID}</a>`;
@@ -50,8 +50,6 @@ export default function generatePostInfoHtml(
   if (o.isArchived) {
     output +=
       ` <img src="${staticPath}archived${gifIcon}" alt="Archived" title="Archived" class="archivedIcon retina">`;
-  } else {
-    output += ` <img src="${staticPath}archived${gifIcon}" alt="Archived" title="Archived" class="archivedIcon retina">`;
   }
   if (!o.isReply && g.VIEW === "index") output += ` &nbsp; <span>[<a href="/${boardID}/thread/${threadID}" class="replylink">Reply</a>]</span>`;
   output += '</span></div>';
diff --git a/src/site/SW.yotsuba.js b/src/site/SW.yotsuba.js
index 4d077134b..d419e2f42 100644
--- a/src/site/SW.yotsuba.js
+++ b/src/site/SW.yotsuba.js
@@ -8,6 +8,7 @@ import PostSuccessful from "../Posting/PostSuccessful";
 import ImageHost from "../Images/ImageHost";
 import { g, Conf } from "../globals/globals";
 import BoardConfig from "../General/BoardConfig";
+import CSS from "../css/CSS";
 
 import generatePostInfoHtml from './SW.yotsuba.Build/PostInfoHtml';
 import generateFileHtml from "./SW.yotsuba.Build/FileHtml";
@@ -366,7 +367,7 @@ $\
   Build: {
     staticPath: '//s.4cdn.org/image/',
     gifIcon: window.devicePixelRatio >= 2 ? '@2x.gif' : '.gif',
-    spoilerRange: $.dict(),
+    spoilerRange: Object.create(null),
 
     shortFilename(filename) {
       const ext = filename.match(/\.?[^\.]*$/)[0];
@@ -443,7 +444,7 @@ $\
       }
       o.files = [];
       if (data.ext) {
-        o.file = SWYotsuba.this.parseJSONFile(data, { siteID, boardID });
+        o.file = this.parseJSONFile(data, { siteID, boardID });
         o.files.push(o.file);
       }
       // Temporary JSON properties for events such as April 1 / Halloween
@@ -511,7 +512,7 @@ $\
     post(o) {
       const { ID, threadID, boardID, file } = o;
       const { subject, email, name, tripcode, capcode, pass, uniqueID, flagCode, flagCodeTroll, flag, dateUTC, dateText, commentHTML } = o.info;
-      const { staticPath, gifIcon } = Build;
+      const { staticPath, gifIcon } = this;
 
       /* Post Info */
 
diff --git a/src/types/globals.d.ts b/src/types/globals.d.ts
new file mode 100644
index 000000000..2cc8ff683
--- /dev/null
+++ b/src/types/globals.d.ts
@@ -0,0 +1,2 @@
+declare const cloneInto: Function;
+declare const XPCNativeWrapper: any;