ScratchAddons · DNin01 · Feb 22, 2026 · Feb 11, 2026 · Feb 11, 2026 · Feb 18, 2026
diff --git a/addons/debugger/timing/ui-components/TableRows.js b/addons/debugger/timing/ui-components/TableRows.js
@@ -53,7 +53,7 @@ class TableRows extends LogView {
     const root = document.createElement("div");
     root.className = "sa-timing-timer";
 
-    let labelElem = null;
+    let labelElem;
     if (timer.targetId !== null && timer.blockId !== null) {
       const preview = this.debug.createBlockPreview(timer.targetId, timer.blockId);
       labelElem = this.debug.createBlockLink(this.debug.getTargetInfoById(timer.targetId), timer.blockId);

diff --git a/addons/editor-searchable-dropdowns/userscript.js b/addons/editor-searchable-dropdowns/userscript.js
@@ -351,7 +351,7 @@ export default async function ({ addon, console, msg }) {
       }
 
       const lastIndex = items.length - 1;
-      let newIndex = 0;
+      let newIndex;
       if (event.key === "ArrowDown") {
         if (selectedIndex === -1 || selectedIndex === lastIndex) {
           newIndex = 0;

diff --git a/addons/editor-theme3/theme3.js b/addons/editor-theme3/theme3.js
@@ -802,7 +802,7 @@ export default async function ({ addon, console, msg }) {
 
   let FieldNote;
   if (Blockly.registry) FieldNote = Blockly.registry.getClass(Blockly.registry.Type.FIELD, "field_note");
-  FieldNote = Blockly.FieldNote;
+  else FieldNote = Blockly.FieldNote;
   const oldFieldNoteAddOctaveButton = FieldNote.prototype.addOctaveButton_;
   FieldNote.prototype.addOctaveButton_ = function (...args) {
     // Octave buttons in "play note" dropdown

diff --git a/addons/find-bar/userscript.js b/addons/find-bar/userscript.js
@@ -178,7 +178,7 @@ export default async function ({ addon, msg, console }) {
       // https://github.com/google/blockly/blob/089179b/core/inject.ts#L294
       // KeyboardShortcutsHOC.handleKeyPress:
       // https://github.com/scratchfoundation/scratch-paint/blob/8119055/src/hocs/keyboard-shortcuts-hoc.jsx#L29
-      let isTargetInput = false;
+      let isTargetInput;
       if (Blockly.registry)
         isTargetInput = Blockly.browserEvents.isTargetInput(e); // new Blockly
       else isTargetInput = Blockly.utils.isTargetInput(e);
@@ -408,7 +408,7 @@ export default async function ({ addon, msg, console }) {
           continue;
         }
 
-        let eventName = "";
+        let eventName;
         if (broadcastInput.type === "event_broadcast_menu") {
           eventName = broadcastInput.inputList[0].fieldRow[0].getText();
         } else {

diff --git a/addons/gamepad/userscript.js b/addons/gamepad/userscript.js
@@ -70,7 +70,7 @@ export default async function ({ addon, console, msg }) {
       return null;
     }
     const jsonText = lineWithMagic.substr(0, lineWithMagic.length - GAMEPAD_CONFIG_MAGIC.length);
-    let storedSettingsMap = null;
+    let storedSettingsMap;
     try {
       const parsed = JSON.parse(jsonText);
       if (!parsed || typeof parsed !== "object") {

diff --git a/addons/opacity-slider/userscript.js b/addons/opacity-slider/userscript.js
@@ -128,7 +128,6 @@ export default async function ({ addon, console, msg }) {
     addon.tab.redux.initialize();
     if (typeof prevEventHandler === "function") {
       addon.tab.redux.removeEventListener("statechanged", prevEventHandler);
-      prevEventHandler = null;
     }
 
     const containerWrapper = document.createElement("div");

diff --git a/addons/search-my-stuff/userscript.js b/addons/search-my-stuff/userscript.js
@@ -228,8 +228,6 @@ export default async function ({ addon, console, msg }) {
       statusTip.innerText = msg("progress-tip", { number: (currentPage - 2) * 40 });
       // Detect if the next page of projects exists
       let fetchUrl;
-      let ascSort,
-        descSort = "";
       let sort = document.querySelectorAll(".dropdown.button.grey.small");
       if (window.location.href.includes("galleries")) {
         // Ignore "hosted/curated by me" because the API endpoints are broken
@@ -247,8 +245,8 @@ export default async function ({ addon, console, msg }) {
           fetchUrl = "projects/all";
         }
       }
-      ascSort = sort.getAttribute("data-ascsort") || "";
-      descSort = sort.getAttribute("data-descsort") || "";
+      const ascSort = sort.getAttribute("data-ascsort") || "";
+      const descSort = sort.getAttribute("data-descsort") || "";
       fetchUrl = `https://scratch.mit.edu/site-api/${fetchUrl}/?page=${currentPage}&ascsort=${ascSort}&descsort=${descSort}`;
       await fetch(fetchUrl)
         .then(async (response) => {

diff --git a/addons/variable-manager/userscript.js b/addons/variable-manager/userscript.js
@@ -178,7 +178,7 @@ export default async function ({ addon, console, msg }) {
           }
         }
 
-        let nameAlreadyUsed = false;
+        let nameAlreadyUsed;
         if (this.target.isStage) {
           // Global variables must not conflict with any global variables or local variables in any sprite.
           const existingNames = vm.runtime.getAllVarNamesOfType(this.scratchVariable.type);

@@ -26,17 +26,14 @@ export default class BackgroundLocalizationProvider extends LocalizationProvider
 
     localeLoop: for (const locale of locales) {
       for (const addonId of addonIds) {
-        let resp;
-        let messages = {};
         const url = `/addons-l10n/${locale}/${addonId}.json`;
         try {
-          resp = await fetch(url);
-          messages = await resp.json();
+          const resp = await fetch(url);
+          const messages = await resp.json();
+          this.messages = Object.assign(messages, this.messages);
         } catch (_) {
           if (addonId === "_general") continue localeLoop;
-          continue;
         }
-        this.messages = Object.assign(messages, this.messages);
       }
     }
     this._reconfigure();

@@ -13,20 +13,17 @@ export default class UserscriptLocalizationProvider extends LocalizationProvider
     }
     let addonMessages = {};
     for (const dir of this._urls) {
-      let resp;
-      let messages = {};
       const url = `${dir}/${addonId}.json`;
       try {
-        resp = await fetch(url);
-        messages = await resp.json();
+        const resp = await fetch(url);
+        const messages = await resp.json();
+        addonMessages = Object.assign(messages, addonMessages);
+        this.messages = Object.assign(messages, this.messages);
       } catch (_) {
         if (addonId === "_general") {
           this._urls.delete(dir);
         }
-        continue;
       }
-      addonMessages = Object.assign(messages, addonMessages);
-      this.messages = Object.assign(messages, this.messages);
     }
     if (addonId === "_general") {
       this._reconfigure();

@@ -216,14 +216,15 @@ function editorClassCheck() {
   const pathname = location.pathname.toLowerCase();
   const split = pathname.split("/").filter(Boolean);
   if (!isScratchGui && split[0] !== "projects") return;
-  let isInEditor = false;
-  let isFullScreen = false;
+  let isInEditor;
+  let isFullScreen;
   const state = __scratchAddonsRedux.state;
   if (state) {
     isInEditor = !state.scratchGui.mode.isPlayerOnly;
     isFullScreen = state.scratchGui.mode.isFullScreen;
   } else if (isScratchGui) {
     isInEditor = true;
+    isFullScreen = false;
   } else {
     isInEditor = split.includes("editor");
     isFullScreen = split.includes("fullscreen");

diff --git a/eslint.config.mjs b/eslint.config.mjs
@@ -66,6 +66,7 @@ export default [
       "no-loss-of-precision": 2,
       "no-nonoctal-decimal-escape": 2,
       "no-unsafe-optional-chaining": 2,
+      "no-useless-assignment": 2,
       "no-useless-backreference": 2,
       "no-unused-vars": 0,
       "no-useless-escape": 0,