betaflight · blckmn · Oct 3, 2025 · Oct 3, 2025
diff --git a/src/js/DarkTheme.js b/src/js/DarkTheme.js
@@ -1,7 +1,5 @@
 import $ from "jquery";
 
-const css_dark = ["./css/dark-theme.css"];
-
 const DarkTheme = {
     configSetting: undefined,
     enabled: false,

diff --git a/src/js/TuningSliders.js b/src/js/TuningSliders.js
@@ -47,8 +47,6 @@ const TuningSliders = {
     expertMode: false,
 };
 
-const D_MAX_RATIO = 0.85;
-
 TuningSliders.initialize = function () {
     this.PID_DEFAULT = FC.getPidDefaults();
     this.FILTER_DEFAULT = FC.getFilterDefaults();
@@ -441,7 +439,7 @@ TuningSliders.updateFormPids = function (updateSlidersOnly = false) {
     this.updateSlidersWarning();
 };
 
-TuningSliders.calculateNewPids = function (updateSlidersOnly = false) {
+TuningSliders.calculateNewPids = function () {
     // this is the main calculation for PID sliders, inputs are in form of slider position values
     // values get set both into forms and their respective variables
     FC.TUNING_SLIDERS.slider_pids_mode = this.sliderPidsMode;

diff --git a/src/js/model.js b/src/js/model.js
@@ -159,7 +159,7 @@ Model.prototype.optimizeGeometryForCanvas = function (geometry) {
     const uniqueVertices = [];
     const updatedFaces = [];
 
-    geometry.vertices.forEach((vertex, index) => {
+    geometry.vertices.forEach((vertex) => {
         // Round coordinates with configurable tolerance
         const key = [
             Math.round(vertex.x * tolerance) / tolerance,

diff --git a/src/js/msp/MSPHelper.js b/src/js/msp/MSPHelper.js
@@ -23,8 +23,6 @@ const ledDirectionLetters = ["n", "e", "s", "w", "u", "d"]; // in LSB bit order
 const ledBaseFunctionLetters = ["c", "f", "a", "l", "s", "g", "r", "p", "e", "u"]; // in LSB bit
 let ledOverlayLetters = ["t", "y", "o", "b", "v", "i", "w"]; // in LSB bit
 
-const MAX_GYROS = 8; // maximum number of gyros supported by Betaflight
-
 function MspHelper() {
     const self = this;
 

diff --git a/src/js/msp/debug/msp_queue_monitor.js b/src/js/msp/debug/msp_queue_monitor.js
@@ -123,8 +123,8 @@ export class MSPQueueMonitor {
                 return true;
             });
             if (isDuplicate) this.metrics.duplicates++;
-        } catch (_) {
-            // best-effort only
+        } catch {
+            // Ignore errors in duplicate detection
         }
 
         // Check for queue size peaks

diff --git a/src/js/msp/debug/msp_stress_test.js b/src/js/msp/debug/msp_stress_test.js
@@ -276,7 +276,7 @@ export class MSPStressTest {
             try {
                 await this.msp.promise(code, null);
                 return { error: "Expected timeout but request succeeded" };
-            } catch (error) {
+            } catch {
                 const timeoutTime = performance.now() - startTime;
 
                 // Test that new requests work after timeout

diff --git a/src/js/protocols/WebSocket.js b/src/js/protocols/WebSocket.js
@@ -57,7 +57,7 @@ class Websocket extends EventTarget {
         return new Uint8Array(buffer);
     }
 
-    async connect(path, options) {
+    async connect(path) {
         this.address = path;
         console.log(`${this.logHead} Connecting to ${this.address}`);
 

diff --git a/src/js/protocols/webusbdfu.js b/src/js/protocols/webusbdfu.js
@@ -471,7 +471,7 @@ class WEBUSBDFU_protocol extends EventTarget {
                 };
                 return memory;
             };
-            const chipInfo = descriptors.map(parseDescriptor).reduce((o, v, i) => {
+            const chipInfo = descriptors.map(parseDescriptor).reduce((o, v) => {
                 o[v.type.toLowerCase().replace(" ", "_")] = v;
                 return o;
             }, {});
@@ -500,7 +500,7 @@ class WEBUSBDFU_protocol extends EventTarget {
                     }
                 })
                 .catch((error) => {
-                    console.log(`${this.logHead} USB controlTransfer IN failed for request: ${request}`);
+                    console.log(`${this.logHead} USB controlTransfer IN failed for request: ${request} (${error})`);
                     callback([], 1);
                 });
         } else {
@@ -525,7 +525,7 @@ class WEBUSBDFU_protocol extends EventTarget {
                     }
                 })
                 .catch((error) => {
-                    console.log(`${this.logHead} USB controlTransfer OUT failed for request: ${request}`);
+                    console.log(`${this.logHead} USB controlTransfer OUT failed for request: ${request} (${error})`);
                 });
         }
     }
@@ -900,7 +900,7 @@ class WEBUSBDFU_protocol extends EventTarget {
                                 const spans_page = hexData.address < page_start && end_address > page_end;
 
                                 if (starts_in_page || ends_in_page || spans_page) {
-                                    const idx = erase_pages.findIndex((element, index, array) => {
+                                    const idx = erase_pages.findIndex((element) => {
                                         return element.sector === i && element.page === j;
                                     });
                                     if (idx === -1) {
@@ -1161,31 +1161,23 @@ class WEBUSBDFU_protocol extends EventTarget {
                                 ? this.transferSize
                                 : this.hex.data[reading_block].bytes - bytes_verified;
 
-                        this.controlTransfer(
-                            "in",
-                            this.request.UPLOAD,
-                            wBlockNum++,
-                            0,
-                            bytes_to_read,
-                            0,
-                            (data, code) => {
-                                for (const piece of data) {
-                                    this.verify_hex[reading_block].push(piece);
-                                }
+                        this.controlTransfer("in", this.request.UPLOAD, wBlockNum++, 0, bytes_to_read, 0, (data) => {
+                            for (const piece of data) {
+                                this.verify_hex[reading_block].push(piece);
+                            }
 
-                                address += bytes_to_read;
-                                bytes_verified += bytes_to_read;
-                                bytes_verified_total += bytes_to_read;
+                            address += bytes_to_read;
+                            bytes_verified += bytes_to_read;
+                            bytes_verified_total += bytes_to_read;
 
-                                // update progress bar
-                                TABS.firmware_flasher.flashProgress(
-                                    ((this.hex.bytes_total + bytes_verified_total) / (this.hex.bytes_total * 2)) * 100,
-                                );
+                            // update progress bar
+                            TABS.firmware_flasher.flashProgress(
+                                ((this.hex.bytes_total + bytes_verified_total) / (this.hex.bytes_total * 2)) * 100,
+                            );
 
-                                // verify another page
-                                read();
-                            },
-                        );
+                            // verify another page
+                            read();
+                        });
                     } else {
                         if (reading_block < blocks) {
                             // move to another block
@@ -1261,7 +1253,7 @@ class WEBUSBDFU_protocol extends EventTarget {
             this.loadAddress(address, () => {
                 // 'downloading' 0 bytes to the program start address followed by a GETSTATUS is used to trigger DFU exit on STM32
                 this.controlTransfer("out", this.request.DNLOAD, 0, 0, 0, 0, () => {
-                    this.controlTransfer("in", this.request.GETSTATUS, 0, 0, 6, 0, (data) => {
+                    this.controlTransfer("in", this.request.GETSTATUS, 0, 0, 6, 0, () => {
                         this.cleanup();
                     });
                 });

diff --git a/src/js/receiver_msp/receiver_msp.js b/src/js/receiver_msp/receiver_msp.js
@@ -7,8 +7,6 @@ import $ from "jquery";
 // It seems than when node opens a new window, the module "context" is different, so the i18n var is not initialized
 const i18n = opener.i18n;
 
-const css_dark = ["/css/dark-theme.css"];
-
 const CHANNEL_MIN_VALUE = 1000;
 const CHANNEL_MID_VALUE = 1500;
 const CHANNEL_MAX_VALUE = 2000;
@@ -191,7 +189,7 @@ $(".slider", sliderElems).each(function (sliderIndex) {
 /*
  * Mouseup handler needs to be bound to the window in order to receive mouseup if mouse leaves window.
  */
-$(window).on("mouseup", function (e) {
+$(window).on("mouseup", function () {
     $(this).off("mousemove", handleGimbalMouseDrag);
 });
 

diff --git a/src/js/serial_backend.js b/src/js/serial_backend.js
@@ -59,7 +59,7 @@ function disconnectHandler(event) {
 export function initializeSerialBackend() {
     $("a.connection_button__link").on("click", connectDisconnect);
 
-    EventBus.$on("port-handler:auto-select-serial-device", function (device) {
+    EventBus.$on("port-handler:auto-select-serial-device", function () {
         if (
             !GUI.connected_to &&
             !GUI.connecting_to &&
@@ -658,7 +658,7 @@ function onConnect() {
     // show only appropriate tabs
     $("#tabs ul.mode-connected li").hide();
     $("#tabs ul.mode-connected li")
-        .filter(function (index) {
+        .filter(function () {
             const classes = $(this).attr("class").split(/\s+/);
             let found = false;
 

diff --git a/src/js/tabs/cli.js b/src/js/tabs/cli.js
@@ -146,7 +146,7 @@ cli.initialize = function (callback) {
     async function loadFile() {
         const previewArea = $("#snippetpreviewcontent textarea#preview");
 
-        function executeSnippet(fileName) {
+        function executeSnippet() {
             const commands = previewArea.val();
             executeCommands(commands);
             self.GUI.snippetPreviewWindow.close();
@@ -160,7 +160,7 @@ cli.initialize = function (callback) {
                     "cliConfirmSnippetDialogTitle",
                     { fileName: fileName },
                 );
-                $("#snippetpreviewcontent a.confirm").click(() => executeSnippet(fileName));
+                $("#snippetpreviewcontent a.confirm").on("click", executeSnippet);
             }
 
             previewArea.val(result);

diff --git a/src/js/tabs/firmware_flasher.js b/src/js/tabs/firmware_flasher.js
@@ -263,7 +263,7 @@ firmware_flasher.initialize = async function (callback) {
 
             Object.keys(targets)
                 .sort((a, b) => a.target - b.target)
-                .forEach(function (target, i) {
+                .forEach(function (target) {
                     const descriptor = targets[target];
                     const select_e = $(`<option value='${descriptor.target}'>${descriptor.target}</option>`);
                     boards_e.append(select_e);
@@ -779,11 +779,8 @@ firmware_flasher.initialize = async function (callback) {
         async function flashHexFirmware(firmware) {
             const options = {};
 
-            let eraseAll = false;
             if ($("input.erase_chip").is(":checked") || expertMode_e.is(":not(:checked)")) {
                 options.erase_chip = true;
-
-                eraseAll = true;
             }
 
             const port = PortHandler.portPicker.selectedPort;
@@ -992,7 +989,7 @@ firmware_flasher.initialize = async function (callback) {
             selectFirmware($("option:selected", evt.target).val());
         });
 
-        $("a.cloud_build_cancel").on("click", function (evt) {
+        $("a.cloud_build_cancel").on("click", function () {
             $("a.cloud_build_cancel").toggleClass("disabled", true);
             self.cancelBuild = true;
         });
@@ -1021,7 +1018,7 @@ firmware_flasher.initialize = async function (callback) {
             }
         }
 
-        $("a.load_remote_file").on("click", async function (evt) {
+        $("a.load_remote_file").on("click", async function () {
             if (!self.selectedBoard) {
                 return;
             }

diff --git a/src/js/tabs/landing.js b/src/js/tabs/landing.js
@@ -17,7 +17,7 @@ landing.initialize = function (callback) {
     $("#content").load("./tabs/landing.html", () => {
         function showLang(newLang) {
             bottomSection = $(".languageSwitcher");
-            bottomSection.find("a").each(function (index) {
+            bottomSection.find("a").each(function () {
                 const element = $(this);
                 const languageSelected = element.attr("lang");
                 if (newLang == languageSelected) {

diff --git a/src/js/tabs/led_strip.js b/src/js/tabs/led_strip.js
@@ -13,7 +13,7 @@ const led_strip = {
     directions: ["n", "e", "s", "w", "u", "d"],
 };
 
-led_strip.initialize = function (callback, scrollPosition) {
+led_strip.initialize = function (callback) {
     let selectedColorIndex = null;
     let selectedModeColor = null;
     const functionTag = ".function-";
@@ -226,7 +226,7 @@ led_strip.initialize = function (callback, scrollPosition) {
         const colorDefineSliders = $(".colorDefineSliders");
 
         // Color Buttons
-        $(".colors").on("click", "button", function (e) {
+        $(".colors").on("click", "button", function () {
             const that = this;
             const colorButtons = $(this).parent().find("button");
 

diff --git a/src/js/tabs/onboard_logging.js b/src/js/tabs/onboard_logging.js
@@ -110,7 +110,6 @@ onboard_logging.initialize = function (callback) {
             const deviceSelect = $(".blackboxDevice select");
             const loggingRatesSelect = $(".blackboxRate select");
             const debugModeSelect = $(".blackboxDebugMode select");
-            const debugFieldsSelect = $(".blackboxDebugFields select");
 
             if (FC.BLACKBOX.supported) {
                 $(".tab-onboard_logging a.save-settings").on("click", async function () {
@@ -137,7 +136,7 @@ onboard_logging.initialize = function (callback) {
             populateLoggingRates(loggingRatesSelect);
             populateDevices(deviceSelect);
             populateDebugModes(debugModeSelect);
-            populateDebugFields(debugFieldsSelect);
+            populateDebugFields();
 
             deviceSelect
                 .change(function () {
@@ -262,7 +261,7 @@ onboard_logging.initialize = function (callback) {
         });
     }
 
-    function populateDebugFields(debugFieldsSelect) {
+    function populateDebugFields() {
         if (semver.gte(FC.CONFIG.apiVersion, API_VERSION_1_45)) {
             $(".blackboxDebugFields").show();
 
@@ -408,6 +407,11 @@ onboard_logging.initialize = function (callback) {
             loggingStatus = "Dataflash";
         }
 
+        tracking.sendEvent(tracking.EVENT_CATEGORIES.FLIGHT_CONTROLLER, "DataLogging", {
+            logSize: FC.DATAFLASH.usedSize,
+            logStatus: loggingStatus,
+        });
+
         if (FC.SDCARD.supported && !sdcardTimer) {
             // Poll for changes in SD card status
             sdcardTimer = setTimeout(function () {