Fix apps with undefined variables

apps/1button/widget.js

@@ -22,7 +22,7 @@
     console.log("Button let go");
     digitalWrite(LED2,0);
     var unpress_time = new Date();
-    recFile = require("Storage").open("one_button_presses.csv","a");
+    const recFile = require("Storage").open("one_button_presses.csv","a");
     recFile.write([press_time.getTime(),unpress_time.getTime()].join(",")+"\n");
   }, BTN1, { repeat: true, edge: 'falling', debounce: 50 });
 

apps/acmaze/app.js

@@ -206,7 +206,7 @@ function Maze(n) {
     return false;
   };
   this.tick = function() {
-    accel = Bangle.getAccel();
+    let accel = Bangle.getAccel();
     if (this.ball_x%this.wall_length) {
       this.try_move_horizontally(accel.x);
     } else if (this.ball_y%this.wall_length) {

apps/activepedom/widget.js

@@ -32,10 +32,10 @@
   }
 
   function storeData()  {
-    now = new Date();
-    month = now.getMonth() + 1; //month is 0-based
+    let now = new Date();
+    let month = now.getMonth() + 1; //month is 0-based
     if (month < 10) month = "0" + month; //leading 0
-    filename = filename = "activepedom" + now.getFullYear() + month + now.getDate() + ".data"; //new file for each day
+    let filename = "activepedom" + now.getFullYear() + month + now.getDate() + ".data"; //new file for each day
     dataFile = s.open(filename,"a");
     if (dataFile) { //check if filen already exists
       if (dataFile.getLength() == 0) {
@@ -231,7 +231,7 @@
     stepsTooLong = pedomData.stepsTooLong;
     stepsOutsideTime = pedomData.stepsOutsideTime;
   }
-  pedomdata = 0; //reset pedomdata to save memory
+  pedomdata = 0; //reset pedomdata to save memory - TODO: Should `pedomdata` have been `pedomData` here?
 
   setStepSensitivity(setting('stepSensitivity')); //set step sensitivity (80 is standard, 400 is muss less sensitive)
   /*timerStoreData =*/ setInterval(storeData, storeDataInterval); //store data regularly

apps/antonclkplus/app.js

@@ -107,7 +107,7 @@ let isoStr = function(date) {
 
 let calWeekBuffer = [false,false,false]; //buffer tz, date, week no (once calculated until other tz or date is requested)
 let ISO8601calWeek = function(date) { //copied from: https://gist.github.com/IamSilviu/5899269#gistcomment-3035480
-  dateNoTime = date; dateNoTime.setHours(0,0,0,0);
+  const dateNoTime = date; dateNoTime.setHours(0,0,0,0);
   if (calWeekBuffer[0] === date.getTimezoneOffset() && calWeekBuffer[1] === dateNoTime) return calWeekBuffer[2];
   calWeekBuffer[0] = date.getTimezoneOffset();
   calWeekBuffer[1] = dateNoTime;

apps/aptsciclk/app.js

@@ -136,6 +136,7 @@ else if (img == "apetureLaboratoriesLight"){
 function drawStart(){
   g.clear();
   g.reset();
+  let apSciLab;
   if (g.theme.dark){apSciLab = getImg("apetureLaboratories");}
   else {apSciLab = getImg("apetureLaboratoriesLight");}
   g.drawImage(apSciLab, xyCenter-apSciLab.width/2, xyCenter-apSciLab.height/2);
@@ -241,7 +242,7 @@ function buttonPressed(){
   if (curWarning < maxWarning) curWarning += 1;
   else curWarning = 0;
   g.reset();
-  buttonImg = getImg("butPress");
+  const buttonImg = getImg("butPress");
   g.drawImage(buttonImg, 0, 0);
 
   warningImg = getImg("w"+String(curWarning));
@@ -251,7 +252,7 @@ function buttonPressed(){
 }
 function buttonUnpressed(){
   if (!pause){
-    buttonImg = getImg("butUnpress");
+    const buttonImg = getImg("butUnpress");
     g.drawImage(buttonImg, 0, 0);
   }
   else{
@@ -277,11 +278,12 @@ function draw() {
 
     g.reset(); // default draw styles
     //draw watchface
+    let apSciWatch;
     if (g.theme.dark){apSciWatch = getImg("apetureWatch");}
     else {apSciWatch = getImg("apetureWatchLight");}
     g.drawImage(apSciWatch, xyCenter-apSciWatch.width/2, xyCenter-apSciWatch.height/2);
 
-    potato = getImg("potato");
+    const potato = getImg("potato");
     g.drawImage(potato, 118, 118);
 
     g.drawImage(warningImg, 1, g.getWidth()-61);//update warning

apps/astrocalc/astrocalc-app.js

@@ -23,7 +23,7 @@ function drawMoon(phase, x, y) {
     "waning-crescent",
   ];
 
-  img = require("Storage").read(`${moonImgFiles[phase]}.img`);
+  const img = require("Storage").read(`${moonImgFiles[phase]}.img`);
   // image width & height = 92px
   g.drawImage(img, x - parseInt(92 / 2), y);
 }

apps/awairmonitor/app.js

@@ -80,7 +80,7 @@ function draw() {
   g.drawString(""+bt_current_humi, 123, 110);
   g.drawString(""+bt_current_temp, 158, 110);
 
-  for (i = 0; i < 10; i++) {
+  for (let i = 0; i < 10; i++) {
     if (display_frozen) { g.setColor("#888"); }
 
     // max height = 32

apps/balltastic/app.js

@@ -1,4 +1,4 @@
-BANGLEJS2 = process.env.HWVERSION==2;
+const BANGLEJS2 = process.env.HWVERSION==2;
 Bangle.setLCDBrightness(1);
 if (!BANGLEJS2) Bangle.setLCDMode("doublebuffered");
 Bangle.setLCDTimeout(0);

apps/banglexercise/app.js

@@ -148,7 +148,7 @@ function accelHandler(accel) {
 
   // slope for Z
   if (exerciseType.useZaxis) {
-    l = historyAvgZ.length;
+    let l = historyAvgZ.length;
     if (l > 1) {
       const p1 = historyAvgZ[l - 2];
       const p2 = historyAvgZ[l - 1];

apps/batchart/app.js

@@ -101,6 +101,7 @@ function loadLinesFromFile(requestedLineCount, fileName) {
 
   var readFile = Storage.open(fileName, "r");
   
+  let nextLine;
   while ((nextLine = readFile.readLine())) {
     if(nextLine) {
       allLines.push(nextLine);

apps/bigdclock/bigdclock.app.js

@@ -31,7 +31,7 @@ function draw() {
     var dow = require("date_utils").dows(0,1)[date.getDay()];
 
     if ((date.getTime() >= lastBattCheck + 15*60000) || Bangle.isCharging()) {
-      lastBattcheck = date.getTime();
+      lastBattcheck = date.getTime(); // TODO: should `lastBattcheck` have been `lastBattCheck` ?
       width = E.getBattery();
       width += width/2;
     }

apps/bikespeedo/app.js

@@ -409,7 +409,7 @@ function updateClock() {
 
   if ( emulator ) {
     max.spd++; max.alt++;
-    d=new Date(); sec=d.getSeconds();
+    const d=new Date(); sec=d.getSeconds();
     onGPS(lf);
   }
 }

apps/binwatch/app.js

@@ -136,7 +136,7 @@ var cgimg;
 */
 function drawSquare(gfx, x, y, data, numOfBits) {
 
-  for(i = numOfBits; i > 0 ; i--) {
+  for(let i = numOfBits; i > 0 ; i--) {
     if( (data & 1) != 0) {
       gfx.fillRect(x + (i - 1) * x_step, y, 
                    x + i * x_step , y + y_step);
@@ -245,7 +245,7 @@ function drawBattery(gfx, level) {
   var pos_y = bat_pos_y - 1;
   var stepLevel = Math.round((level + 10) / 20);
 
-  for(i = 0; i < stepLevel; i++) {
+  for(let i = 0; i < stepLevel; i++) {
     pos_y -= bat_size_y + 2;
     gfx.fillRect(bat_pos_x, pos_y, 
                  bat_pos_x + bat_size_x, pos_y + bat_size_y);

apps/bowserWF/app.js

@@ -34,10 +34,10 @@ const background = {
 	),
 };
 
-numbersDims = {
+/*const numbersDims = {
 	width: 20,
 	height: 44,
-};
+};*/
 const numbers = [
 	require("heatshrink").decompress(
 		atob(
@@ -88,7 +88,7 @@ const numbers = [
 		)
 	),
 ];
-digitPositions = [
+const digitPositions = [
 	// relative to the box
 	{ x: 13, y: 6 },
 	{ x: 32, y: 6 },

apps/breath/app.js

@@ -51,9 +51,9 @@ g.setFont("6x8", 2);
 function circle() {
 
     g.clear();
-    adjusted_radius = max_radius * Math.abs(origin);
+    const adjusted_radius = max_radius * Math.abs(origin);
     g.drawCircle(120, 120, adjusted_radius);
-    radius = Math.abs(Math.sin(origin));
+    //const radius = Math.abs(Math.sin(origin));
     angle += 2;
     origin = angle * (Math.PI / 180);
     if (angle >= 0 && angle < 90) {

apps/bthrm/lib.js

@@ -6,7 +6,7 @@ exports.enable = () => {
 
   var log = function(text, param){
     if (global.showStatusInfo)
-      showStatusInfo(text);
+      global.showStatusInfo(text);
     if (settings.debuglog){
       var logline = new Date().toISOString() + " - " + text;
       if (param) logline += ": " + JSON.stringify(param);

apps/bthrm/recorder.js

@@ -16,7 +16,7 @@
       name : "BT HR",
       fields : ["BT Heartrate", "BT Battery", "Energy expended", "Contact", "RR"],
       getValues : () => {
-        result = [bpm,bat,energy,contact,rr];
+        const result = [bpm,bat,energy,contact,rr];
         bpm = "";
         rr = "";
         bat = "";

apps/bthrv/recorder.js

@@ -31,7 +31,7 @@
             }
           }
         }
-        result = [hrv];
+        const result = [hrv];
         hrv = "";
         rrHistory = [];
         return result;

apps/calibration/app.js

@@ -129,7 +129,7 @@ class BanglejsApp {
 
 E.srand(Date.now());
 
-calibration = new BanglejsApp();
+const calibration = new BanglejsApp();
 calibration.load_settings();
 Bangle.disableCalibration = true;
 

apps/chess/engine.js

@@ -14,7 +14,7 @@ if (this.imports !== undefined &&
     this.printerr !== undefined){//seed or gjs
     p4_log = function(){
         var args = Array.prototype.slice.call(arguments);
-        printerr(args.join(', '));
+        this.printerr(args.join(', '));
     };
 }
 else if (this.console === undefined){//MSIE

apps/clickms/click-master.js

@@ -19,7 +19,7 @@ function drawPlayers() {
   g.clear(1);
   g.setFont("6x8",2);
   var l = [{name:ME,cnt:mycounter}];
-  for (p of players) l.push(p);
+  for (const p of players) l.push(p);
   l.sort((a,b)=>a.cnt-b.cnt);
   var y=0;
   l.forEach(player=>{

apps/clkinfosunrise/clkinfo.js

@@ -49,6 +49,7 @@
           let day = true;
           let d = date.getTime();
           let dayLength = sunset.getTime()-sunrise.getTime();
+          let timePast;
           let timeTotal;
           if (d < sunrise.getTime()) {
             day = false; // early morning

apps/contacts/contacts.app.js

@@ -66,7 +66,7 @@ function showNumpad(text, key_, callback) {
     s = key + text.substr(key.length, 999);
     g.setFont("Vector:24").setFontAlign(1,0).drawString(s,g.getWidth(),12);
   }
-  ds="12%";
+  const ds="12%";
   var numPad = new Layout ({
     type:"v", c: [{
       type:"v", c: [

apps/devstopwatch/app.js

@@ -65,7 +65,7 @@ function chronometer() {
   }
 
   currentLap = calculateLap(state.whenStarted);
-  total = calculateLap(state.whenStartedTotal);
+  const total = calculateLap(state.whenStartedTotal);
 
   state.laps[0] = total;
   state.laps[1] = currentLap;

apps/diract/diract.js

@@ -513,11 +513,12 @@ function encodeAcceleration() {
 function updateSensorData() {
   
   // Update the battery measurement each time the cyclic count resets
+  let encodedBattery;
   if(cyclicCount === 0) {
     encodedBattery = encodeBatteryPercentage();
   }
 
-  encodedAcceleration = encodeAcceleration();
+  let encodedAcceleration = encodeAcceleration();
 
   sensorData[0] = ((encodedAcceleration.x << 2) & 0xfc) |
                   ((encodedAcceleration.y >> 4) & 0x3f);

apps/edisonsball/app.js

@@ -118,8 +118,8 @@ function checkHR() {
 
   if(HR_samples.length == 5){
      g.clear();
-     average_HR = average(HR_samples).toFixed(0);
-     stdev_HR = getStandardDeviation (HR_samples).toFixed(1);
+     let average_HR = average(HR_samples).toFixed(0);
+     let stdev_HR = getStandardDeviation (HR_samples).toFixed(1);
 
     if (ISBANGLEJS1) {
       g.drawString("HR: " + average_HR, 120,100);

apps/espruinoterm/app.js

@@ -7,7 +7,7 @@ var R = Bangle.appRect;
 var termg = Graphics.createArrayBuffer(R.w, R.h, 1, {msb:true});
 var termVisible = false;
 termg.setFont("6x8");
-term = require("VT100").connect(termg, {
+let term = require("VT100").connect(termg, {
   charWidth : 6,
   charHeight : 8
 });

apps/fclock/fclock.app.js

@@ -86,7 +86,7 @@ const drawSec = function (sections, color) {
 
 const drawClock = function () {
 
-  currentTime = new Date();
+  const currentTime = new Date();
 
   //Get date as a string
   date = dateStr(currentTime);
@@ -163,11 +163,11 @@ const drawHR = function () {
   }
 
   if (grow) {
-    color = settings.hr.color;
+    const color = settings.hr.color;
     g.setColor(color);
     g.fillCircle(settings.hr.x, settings.hr.y, size);
   } else {
-    color = "#000000";
+    const color = "#000000";
     g.setColor(color);
     g.drawCircle(settings.hr.x, settings.hr.y, size);
   }

apps/flashcards/app.js

@@ -39,7 +39,7 @@
     while (str.length > maxLength) {
       let found = false;
       // Inserts new line at first whitespace of the line
-      for (i = maxLength - 1; i > 0; i--) {
+      for (let i = maxLength - 1; i > 0; i--) {
         if (str.charAt(i)==' ') {
           res = res + [str.slice(0, i), "\n"].join('');
           str = str.slice(i + 1);

apps/flow/app.js

@@ -193,7 +193,7 @@ let intervalId;
 
 if (BTN.read()) {
   for (let i = 0; i < 10; i++) {
-    color = getColor(i);
+    const color = getColor(i);
     g.setColor(color[0], color[1], color[2]);
     g.fillRect((i / 10) * h, 0, ((i + 1) / 10) * h, h);
   }

apps/forge/forge.app.js

@@ -2,9 +2,9 @@
 
 "Bangle.loadWidgets()"; // Facilitates fastloading to this app via Fastload Utils, while still not loading widgets on standard `load` calls.
 
-st = require('Storage');
+const st = require('Storage');
 
-l = /^a\..*\.js$/;
+let l = /^a\..*\.js$/;
 //l = /.*\.js/;
 l = st.list(l, {sf:false});
 

apps/ftclock/mkFourTwentyTz.js

@@ -1,3 +1,4 @@
+/* eslint-env node */
 let fs = require('fs');
 let csv = require('csv');
 

apps/golfview/golfview.js

@@ -41,8 +41,8 @@ function rotateVec(a, theta) {
     x: 0,
     y: 0
   };
-  c = Math.cos(theta);
-  s = Math.sin(theta);
+  const c = Math.cos(theta);
+  const s = Math.sin(theta);
   pt.x = c * a.x - s * a.y;
   pt.y = s * a.x + c * a.y;
   return pt;
@@ -124,7 +124,7 @@ function drawHole(l) {
       nodelist.push(node.x);
       nodelist.push(node.y);
     });
-    newnodelist = g.transformVertices(nodelist, transform);
+    const newnodelist = g.transformVertices(nodelist, transform);
 
     g.fillPoly(newnodelist, true);
     //console.log(feature.type);
@@ -139,7 +139,7 @@ function drawHole(l) {
     waynodelist.push(node.y);
   });
 
-  newnodelist = g.transformVertices(waynodelist, transform);
+  const newnodelist = g.transformVertices(waynodelist, transform);
   g.setColor(0, 1, 1); // cyan
   g.drawPoly(newnodelist);
 }

apps/golfview/maptools.js

@@ -40,8 +40,8 @@ function rotateVec(a, theta) {
         x: 0,
         y: 0
     };
-    c = Math.cos(theta);
-    s = Math.sin(theta);
+    const c = Math.cos(theta);
+    const s = Math.sin(theta);
     pt.x = c * a.x - s * a.y;
     pt.y = s * a.x + c * a.y;
     return pt;

apps/gpsnav/app.js

@@ -157,7 +157,7 @@ function stopdraw() {
 
 function startTimers() {
   candraw=true;
-  intervalRefSec = setInterval(function() {
+  /*intervalRefSec =*/ setInterval(function() {
     heading = newHeading(course,heading);
     if (course!=heading) drawCompass(heading);
   },200);

apps/gpsnav/app.min.js

@@ -5,7 +5,7 @@ function bearing(a,c){var b=radians(c.lon-a.lon),d=radians(a.lat),e=radians(c.la
 function drawN(){var a=loc.speed(speed);buf.setColor(1);buf.setFont("6x8",2);buf.drawString("o",100,0);buf.setFont("6x8",1);buf.drawString(a.substring(a.length-3),220,40);buf.setFont("Vector",48);var c=course.toString();c=10>course?"00"+c:100>course?"0"+c:c;buf.drawString(c,10,0);buf.drawString(a.substring(0,a.length-3),140,4);flip(buf,Yoff+70);buf.setColor(1);buf.setFont("Vector",24);a=brg.toString();a=10>brg?"00"+a:100>brg?"0"+a:a;buf.setColor(3);buf.drawString("Brg: ",0,0);buf.drawString("Dist: ",
 0,30);buf.setColor(selected?1:2);buf.drawString(wp.name,140,0);buf.setColor(1);buf.drawString(a,60,0);buf.drawString(loc.distance(dist),60,30);flip(buf,Yoff+130);g.setFont("6x8",1);g.setColor(0,0,0);g.fillRect(10,230,60,239);g.setColor(1,1,1);g.drawString("Sats "+satellites.toString(),10,230)}var savedfix;
 function onGPS(a){savedfix=a;void 0!==a&&(course=isNaN(a.course)?course:Math.round(a.course),speed=isNaN(a.speed)?speed:a.speed,satellites=a.satellites);candraw&&(void 0!==a&&1==a.fix&&(dist=distance(a,wp),isNaN(dist)&&(dist=0),brg=bearing(a,wp),isNaN(brg)&&(brg=0)),drawN())}var intervalRef;function stopdraw(){candraw=!1;intervalRef&&clearInterval(intervalRef)}
-function startTimers(){candraw=!0;intervalRefSec=setInterval(function(){heading=newHeading(course,heading);course!=heading&&drawCompass(heading)},200)}function drawAll(){g.setColor(1,.5,.5);g.fillPoly([120,Yoff+50,110,Yoff+70,130,Yoff+70]);g.setColor(1,1,1);drawN();drawCompass(heading)}function startdraw(){g.clear();Bangle.drawWidgets();startTimers();drawAll()}
+function startTimers(){candraw=!0;setInterval(function(){heading=newHeading(course,heading);course!=heading&&drawCompass(heading)},200)}function drawAll(){g.setColor(1,.5,.5);g.fillPoly([120,Yoff+50,110,Yoff+70,130,Yoff+70]);g.setColor(1,1,1);drawN();drawCompass(heading)}function startdraw(){g.clear();Bangle.drawWidgets();startTimers();drawAll()}
 function setButtons(){setWatch(nextwp.bind(null,-1),BTN1,{repeat:!0,edge:"falling"});setWatch(doselect,BTN2,{repeat:!0,edge:"falling"});setWatch(nextwp.bind(null,1),BTN3,{repeat:!0,edge:"falling"})}var SCREENACCESS={withApp:!0,request:function(){this.withApp=!1;stopdraw();clearWatch()},release:function(){this.withApp=!0;startdraw();setButtons()}};Bangle.on("lcdPower",function(a){SCREENACCESS.withApp&&(a?startdraw():stopdraw())});var waypoints=require("waypoints").load();
 wp=waypoints[0];function nextwp(a){selected&&(wpindex+=a,wpindex>=waypoints.length&&(wpindex=0),0>wpindex&&(wpindex=waypoints.length-1),wp=waypoints[wpindex],drawN())}function doselect(){selected&&0!=wpindex&&void 0===waypoints[wpindex].lat&&savedfix.fix&&(waypoints[wpindex]={name:"@"+wp.name,lat:savedfix.lat,lon:savedfix.lon},wp=waypoints[wpindex],require("waypoints").save(waypoints));selected=!selected;drawN()}g.clear();Bangle.setLCDBrightness(1);Bangle.loadWidgets();Bangle.drawWidgets();
 Bangle.setGPSPower(1);drawAll();startTimers();Bangle.on("GPS",onGPS);setButtons();

apps/gpsnav/app_b2.js

@@ -168,7 +168,7 @@ function stopdraw() {
 
 function startTimers() {
   candraw = true;
-  intervalRefSec = setInterval(function() {
+  /*intervalRefSec =*/ setInterval(function() {
     heading = newHeading(course, heading);
     if (course != heading) drawCompass(heading);
   }, 200);

apps/gsat/app.js

@@ -21,7 +21,7 @@ function drawTime() {
     Bangle.buzz();
     return;
   }
-  min = seconds / secsinmin;
+  const min = seconds / secsinmin;
   if (seconds < quickfixperiod) {
     g.setFont('Vector', 20); 
     g.drawString('Quick Fix', 125, 50);

apps/guitarsongs/app.js

@@ -116,7 +116,7 @@ function drawChordCached(chord, x, y, options) {
   if (chordCache[chord[0]]) {
     image = chordCache[chord[0]]
   } else {
-    arrbuff = Graphics.createArrayBuffer(chordWidth,chordHeight,1,{msb:true});
+    let arrbuff = Graphics.createArrayBuffer(chordWidth,chordHeight,1,{msb:true});
     drawChord(arrbuff, chord, 0, 0, options);
     image = {width: arrbuff.getWidth(), height: arrbuff.getHeight(), bpp:arrbuff.getBPP(), buffer: arrbuff.buffer, transparent:0}
     chordCache[chord[0]] = image;

apps/ha/ha.lib.js

@@ -3,7 +3,7 @@
  * configured and send a trigger to homeassistant.
  */
 function _getIcon(trigger){
-    icon = trigger.icon;
+    const icon = trigger.icon;
     if(icon == "light"){
       return {
         width : 48, height : 48, bpp : 1,

apps/hamloc/app.js

@@ -1,4 +1,4 @@
-latLonToGridSquare=function(o,a){var t,e,n,s,l,i,r,h,M,f=-100,g=0,u="ABCDEFGHIJKLMNOPQRSTUVWX",d=u.toLowerCase();function N(o){return"number"==typeof o?o:"string"==typeof o?parseFloat(o):"function"==typeof o?parseFloat(o()):void E.showMessage("can't convert \ninput: "+o)}return"object"==typeof o?2===o.length?(f=N(o[0]),g=N(o[1])):"lat"in o&&"lon"in o?(f=N(o.lat),g=N(o.lon)):"latitude"in o&&"longitude"in o?(f=N(o.latitude),g=N(o.longitude)):E.showMessage("can't convert \nobject "+o):(f=N(o),g=N(a)),isNaN(f)&&E.showMessage("lat is NaN"),isNaN(g)&&E.showMessage("lon is NaN"),90===Math.abs(f)&&E.showMessage("grid invalid \nat N/S"),90<Math.abs(f)&&E.showMessage("invalid lat: \n"+f),180<Math.abs(g)&&E.showMessage("invalid lon: \n"+g),t=f+90,e=g+180,n=u[Math.floor(t/10)],s=u[Math.floor(e/20)],l=""+Math.floor(t%10),i=""+Math.floor(e/2%10),h=60*(t-Math.floor(t)),M=60*(e-2*Math.floor(e/2)),r=d[Math.floor(h/2.5)],s+n+i+l+d[Math.floor(M/5)]+r};
+const latLonToGridSquare=function(o,a){var t,e,n,s,l,i,r,h,M,f=-100,g=0,u="ABCDEFGHIJKLMNOPQRSTUVWX",d=u.toLowerCase();function N(o){return"number"==typeof o?o:"string"==typeof o?parseFloat(o):"function"==typeof o?parseFloat(o()):void E.showMessage("can't convert \ninput: "+o)}return"object"==typeof o?2===o.length?(f=N(o[0]),g=N(o[1])):"lat"in o&&"lon"in o?(f=N(o.lat),g=N(o.lon)):"latitude"in o&&"longitude"in o?(f=N(o.latitude),g=N(o.longitude)):E.showMessage("can't convert \nobject "+o):(f=N(o),g=N(a)),isNaN(f)&&E.showMessage("lat is NaN"),isNaN(g)&&E.showMessage("lon is NaN"),90===Math.abs(f)&&E.showMessage("grid invalid \nat N/S"),90<Math.abs(f)&&E.showMessage("invalid lat: \n"+f),180<Math.abs(g)&&E.showMessage("invalid lon: \n"+g),t=f+90,e=g+180,n=u[Math.floor(t/10)],s=u[Math.floor(e/20)],l=""+Math.floor(t%10),i=""+Math.floor(e/2%10),h=60*(t-Math.floor(t)),M=60*(e-2*Math.floor(e/2)),r=d[Math.floor(h/2.5)],s+n+i+l+d[Math.floor(M/5)]+r};
 
 Bangle.setGPSPower(1);
 var fix;

apps/hardalarm/app.js

@@ -28,7 +28,7 @@ function showMainMenu() {
     'New Alarm': ()=>editAlarm(-1)
   };
   alarms.forEach((alarm,idx)=>{
-    txt = (alarm.on?"on  ":"off ")+formatTime(alarm.hr);
+    let txt = (alarm.on?"on  ":"off ")+formatTime(alarm.hr);
     if (alarm.rp) txt += " (repeat)";
     menu[txt] = function() {
       editAlarm(idx);

apps/hcclock/hcclock.app.js

@@ -147,7 +147,7 @@ function drawDigits(x, value)
 function drawChar(i, xMin, yMin, xMax, yMax)
 {
    numbers[i].forEach(rect => {
-     r = place(rect, xMin, yMin, xMax, yMax);
+     const r = place(rect, xMin, yMin, xMax, yMax);
      g.setColor(fg,fg,fg);
      g.fillRect(r[0], r[1], r[2], r[3]);
     });

apps/heart/app.js

@@ -214,7 +214,7 @@ function graphRecord(n) {
   var measure;
 
   while (line !== undefined) {
-    currentLine = line;
+    const currentLine = line;
     line = f.readLine();
     tempCount++;
     if (tempCount == startLine) {
@@ -259,7 +259,7 @@ function graphRecord(n) {
       positionX++;
       if (parseInt(currentLine.split(",")[2]) >= 70) {
         g.setColor(1, 0.3, 0.3);
-        oldPositionY = positionY;
+        const oldPositionY = positionY;
         measure = parseInt(currentLine.split(",")[1]);
         positionY = GraphYZero - measure + MinMeasurement;
         if (positionY > GraphYZero) {

apps/hidbkbd/hid-binary-keyboard.js

@@ -71,8 +71,8 @@ function show(chars,callback) {
     return;
   }
   var m = chars.length/2;
-  charl=chars.slice(0,m);
-  charr=chars.slice(m);
+  let charl=chars.slice(0,m);
+  let charr=chars.slice(m);
   showChars(0,charl);
   showChars(120,charr);
   setWatch(() => {

apps/homework/app.js

@@ -135,7 +135,7 @@ function checkPreciseHomework(subjectnum) { // P A I N
   checkPreciseHomeworkMenu[subject] = function() {},
     checkPreciseHomeworkMenu[taskmsg] = function() {},
     checkPreciseHomeworkMenu[statusmsg] = function() {
-      status = "Status: Finished";
+      status = "Status: Finished"; // TODO: Should this have been called `statusmsg`?
       var d = new Date();
       var currenttime = require("locale").time(d, 1);
       var currentdate = require("locale").date(d);

apps/hworldclock/app.js

@@ -4,6 +4,7 @@
 const SETTINGSFILE = "hworldclock.json";
 let secondsMode;
 let showSunInfo;
+let singleOffsetSmall;
 let colorWhenDark;
 let rotationTarget;
 // ------- Settings file
@@ -155,7 +156,7 @@ let updatePos = function() {
 	let coord = require("Storage").readJSON(LOCATION_FILE,1)||  {"lat":0,"lon":0,"location":"-"}; //{"lat":53.3,"lon":10.1,"location":"Pattensen"};
 	if (coord.lat != 0 && coord.lon != 0) {
 	//pos = SunCalc.getPosition(Date.now(), coord.lat, coord.lon);
-	times = SunCalc.getTimes(Date.now(), coord.lat, coord.lon);
+	const times = SunCalc.getTimes(Date.now(), coord.lat, coord.lon);
 	rise = "^" + times.sunrise.toString().split(" ")[4].substr(0,5);
 	set	= "v" + times.sunset.toString().split(" ")[4].substr(0,5);
 	//noonpos = SunCalc.getPosition(times.solarNoon, coord.lat, coord.lon);
@@ -253,7 +254,7 @@ let draw = function() {
 
 	// Loop through offset(s) and render
 	offsets.forEach((offset, index) => {
-	dx = getCurrentTimeFromOffset(gmt, offset[OFFSET_HOURS]);
+	const dx = getCurrentTimeFromOffset(gmt, offset[OFFSET_HOURS]);
 	hours = doublenum(dx.getHours());
 	minutes = doublenum(dx.getMinutes());
 

apps/icons/gen/generate.js

@@ -5,6 +5,8 @@
 
 // Icons from https://fonts.google.com/icons
 
+/* eslint-env node */
+
 var imageconverter = require("../../../webtools/imageconverter.js").imageconverter;
 var icons = JSON.parse(require("fs").readFileSync(__dirname+"/icon_names.json"));
 const imgOptions = {

apps/infoclk/configLoad.js

@@ -109,7 +109,7 @@ function isDictionary(object) {
 function merge(overlay, base) {
     let result = base;
 
-    for (objectKey in overlay) {
+    for (const objectKey in overlay) {
         if (!Object.keys(base).includes(objectKey)) result[objectKey] = overlay[objectKey];     // If the key isn't there, add it
         else if (isDictionary(base[objectKey]) && isDictionary(overlay[objectKey]))             // If the key is a dictionary in both, do recursive call
             result[objectKey] = merge(overlay[objectKey], base[objectKey]);

apps/kineticscroll/boot.js

@@ -124,7 +124,7 @@
       }
     
       velocity = E.clip(velocity,-MAX_VELOCITY,MAX_VELOCITY);
-      lastDrag=Date.now();
+      //lastDrag=Date.now();
       if (!scheduledDraw){
         scheduledDraw = setTimeout(draw,0);
       }

apps/kineticscroll/boot.min.js

@@ -1,4 +1,4 @@
 (function(){E.showScroller=function(c){function k(a){return a*c.h+b.y-l}function h(a){return Math.floor((a+l-b.y)/c.h)}if(!c)return Bangle.setUI();let p,e=0,m=0,w=setInterval(()=>{e*=.9},50),q=0,b=Bangle.appRect,n=0|c.scrollMin,r=c.h*c.c-b.h;r<n&&(r=n);const t=()=>{g.reset().clearRect(b).setClipRect(b.x,b.y,b.x2,b.y2);for(var a=h(b.y),d=Math.min(h(b.y2),c.c-1);a<=d;a++)c.draw(a,{x:b.x,y:k(a),w:b.w,h:c.h});g.setClipRect(0,0,g.getWidth()-1,g.getHeight()-1)},u=()=>{var a=e;f.scroll-a>r&&
 (a=f.scroll-r,e=0);f.scroll-a<n&&(a=f.scroll-n,e=0);f.scroll-=a;a=l;l=f.scroll&-2;a-=l;p=.01<Math.abs(e)?setTimeout(u,0):void 0;if(a){g.reset().setClipRect(b.x,b.y,b.x2,b.y2).scroll(0,a);if(0>a){a=Math.max(b.y2-(1-a),b.y);g.setClipRect(b.x,a,b.x2,b.y2);var d=h(a);for(a=k(d);a<b.y2;a+=c.h)c.draw(d,{x:b.x,y:a,w:b.w,h:c.h}),d++}else for(a=Math.min(b.y+a,b.y2),g.setClipRect(b.x,b.y,b.x2,a),d=h(a),k(d),a=k(d);a>b.y-c.h;a-=c.h)c.draw(d,{x:b.x,y:a,w:b.w,h:c.h}),d--;g.setClipRect(0,0,g.getWidth()-1,g.getHeight()-
-1)}};let v={mode:"custom",back:c.back,drag:a=>{if(0>e&&0<a.dy||0<e&&0>a.dy)e*=-1,m=5*e;0<a.b&&(q||(q=Date.now(),m=e=0),m+=a.dy);e=m/(Date.now()-q)*100;q&&0==a.b&&(q=m=0);e=E.clip(e,-100,100);lastDrag=Date.now();p||(p=setTimeout(u,0))},touch:(a,d)=>{if(!(d.y<b.y-4)&&(m=e=0,a=h(d.y),(0>n||0<=a)&&a<c.c)){let x=d.y+l-b.y-a*c.h;print("selected");c.select(a,{x:d.x,y:x})}},redraw:t};c.remove&&(v.remove=()=>{p&&clearTimeout(p);clearInterval(w);c.remove()});Bangle.setUI(v);let f={scroll:E.clip(0|c.scroll,
+1)}};let v={mode:"custom",back:c.back,drag:a=>{if(0>e&&0<a.dy||0<e&&0>a.dy)e*=-1,m=5*e;0<a.b&&(q||(q=Date.now(),m=e=0),m+=a.dy);e=m/(Date.now()-q)*100;q&&0==a.b&&(q=m=0);e=E.clip(e,-100,100);p||(p=setTimeout(u,0))},touch:(a,d)=>{if(!(d.y<b.y-4)&&(m=e=0,a=h(d.y),(0>n||0<=a)&&a<c.c)){let x=d.y+l-b.y-a*c.h;print("selected");c.select(a,{x:d.x,y:x})}},redraw:t};c.remove&&(v.remove=()=>{p&&clearTimeout(p);clearInterval(w);c.remove()});Bangle.setUI(v);let f={scroll:E.clip(0|c.scroll,
 n,r),draw:()=>{g.reset().clearRect(b).setClipRect(b.x,b.y,b.x2,b.y2);var a=h(b.y);let d=Math.min(h(b.y2),c.c-1);for(;a<=d;a++)c.draw(a,{x:b.x,y:k(a),w:b.w,h:c.h});g.setClipRect(0,0,g.getWidth()-1,g.getHeight()-1)},drawItem:a=>{let d=k(a);g.reset().setClipRect(b.x,Math.max(d,b.y),b.x2,Math.min(d+c.h,b.y2));c.draw(a,{x:b.x,y:d,w:b.w,h:c.h});g.setClipRect(0,0,g.getWidth()-1,g.getHeight()-1)},isActive:()=>Bangle.uiRedraw==t},l=f.scroll&-2;f.draw();g.flip();return f}})()

apps/macwatch/app.js

@@ -4,6 +4,8 @@ function draw() {
   g.reset();
   g.setFontCustom(font, 48, 8, 1801);
   g.setFontAlign(0, -1, 0);
+  let line1;
+  let line2;
   if (showDate) {
     if (g.theme.dark) {
       g.setColor("#00ffff"); // cyan date numbers for dark mode

apps/macwatch2/app.js

@@ -36,9 +36,9 @@ function draw() {
   g.drawString(hh, 52, 65, true);
   g.drawString(mm, 132, 65, true);
   g.drawString(':', 93,65);
-  dd = ("0"+(new Date()).getDate()).substr(-2);
-  mo = ("0"+((new Date()).getMonth()+1)).substr(-2);
-  yy = ("0"+((new Date()).getFullYear())).substr(-2);
+  const dd = ("0"+(new Date()).getDate()).substr(-2);
+  const mo = ("0"+((new Date()).getMonth()+1)).substr(-2);
+  const yy = ("0"+((new Date()).getFullYear())).substr(-2);
   g.setFontCustom(font, 48, 8, 521);
   g.drawString(dd + ':' + mo + ':' + yy, 88, 120, true);
 }

apps/messageicons/icons/generate.js

@@ -5,6 +5,8 @@
 
 // default icon must come first in icon_names
 
+/* eslint-env node */
+
 var imageconverter = require("../../../webtools/imageconverter.js");
 var icons = JSON.parse(require("fs").readFileSync(__dirname+"/icon_names.json"));
 const imgOptions = {

apps/miclock2/clock-mixed.js

@@ -69,7 +69,7 @@ const drawMixedClock = function() {
   buf.drawString(dateArray[3], 237, 176, true);
 
   // draw hour and minute dots
-  for (i = 0; i < 60; i++) {
+  for (let i = 0; i < 60; i++) {
       radius = (i % 5) ? 2 : 4;
       rotatePoint(0, Radius.dots, i * 6, Center, point);
       buf.fillCircle(point[0], point[1], radius);

apps/miplant/app.js

@@ -21,7 +21,7 @@ function parseDevice(device) {
     var l = d.getUint8(offset+2);
     var code = d.getUint16(offset,true);
     if (!deviceInfo[device.id]) deviceInfo[device.id]={id:device.id};
-    event = deviceInfo[device.id];
+    let event = deviceInfo[device.id];
     switch (code) {
       case 0x1004: event.temperature = d.getInt16(offset+3,true)/10; break;
       case 0x1006: event.humidity = d.getInt16(offset+3)/10; break;

apps/mosaic/mosaic.app.js

@@ -76,7 +76,7 @@ g.clear();
 loadSettings();
 loadThemeColors();
 
-offset_widgets = settings.showWidgets ? 24 : 0;
+const offset_widgets = settings.showWidgets ? 24 : 0;
 let available_height = g.getHeight() - offset_widgets;
 
 // Calculate grid size and offsets

apps/multiclock/big.face.js

@@ -7,7 +7,7 @@
     const F = 132*H/240; // reasonable approximation
 
     function drawTime() {
-        d = new Date()
+        const d = new Date()
         g.reset();
         var da = d.toString().split(" ");
         var time = da[4].substr(0, 5).split(":");

apps/multiclock/dk.face.js

@@ -9,12 +9,12 @@
         
         function drawClock(){
           var now=Date();
-          d=now.toString().split(' ');
-          var min=d[4].substr(3,2);
+          let d=now.toString().split(' ');
+          //var min=d[4].substr(3,2);
           //var sec=d[4].substr(-2);
           var tm=d[4].substring(0,5);
           //var hr=d[4].substr(0,2);
-          lastmin=min;
+          //lastmin=min;
           g.reset();
           g.clearRect(0,24,W-1,H-1);
           g.setColor(g.theme.fg);

apps/multitimer/alarm.js

@@ -17,6 +17,7 @@ function hardMode(tries, max) {
     g.reset();
     g.setClipRect(R.x,R.y,R.x2,R.y2);
     var code = Math.abs(E.hwRand()%4);
+    let dir;
     if (code == 0) dir = "up";
     else if (code == 1) dir = "right";
     else if (code == 2) dir = "down";

apps/mylocation/settings.js

@@ -51,7 +51,7 @@ function setFromGPS() {
 }
 
 function setFromWaypoint() {
-  wpmenu = {
+  const wpmenu = {
     '': { 'title': /*LANG*/'Waypoint' },
     '< Back': ()=>{ showMainMenu(); },
   };

apps/neonx/neonx.app.js

@@ -115,7 +115,7 @@ function drawAnimated(){
   queueDraw();
 
   // Animate draw through different colors
-  speed = 25;
+  const speed = 25;
   setTimeout(function() {
     _draw(false, 1);
     setTimeout(function() {

apps/nixie/app.js

@@ -237,7 +237,7 @@ for (let idx=0; idx*2 < points6.length; idx++) {
    points9[idx*2+1] = 99-points6[idx*2+1];
 }
 
-pointsArray = [points0, points1, points2, points3, points4, points5, points6, points7, points8, points9];
+const pointsArray = [points0, points1, points2, points3, points4, points5, points6, points7, points8, points9];
 
 function eraseDigit(d, x, y) {
   if(d < 0 || d > 9) return;

apps/notanalog/notanalog.app.js

@@ -274,7 +274,7 @@ function handleState(fastUpdate){
     // Set weather
     state.has_weather = true;
     try {
-        weather = require('weather').get();
+        const weather = require('weather').get();
         if (weather === undefined){
             state.has_weather = false;
             state.temp = "-";

apps/ohmcalc/app.js

@@ -325,7 +325,7 @@ function calculateValue(calculatedVariable, variableValues) {
 
         // Move down for the next entry
         let nextTitleY = (i + 1 < titlePositions.length) ? titlePositions[i + 1] : titleY + 1.5 * fontSize + lineSpacing;
-        yPosition = nextTitleY;
+        //yPosition = nextTitleY;
       }
       g.flip();
     };

apps/openstmap/app.js

@@ -252,7 +252,7 @@ function showMap() {
       hasScrolled = true;
       drawLocation();
     } else if (hasScrolled) {
-      delta = getTime() - startDrag;
+      const delta = getTime() - startDrag;
       startDrag = 0;
       hasScrolled = false;
       if (delta < 0.2) {

apps/orloj/app.js

@@ -297,17 +297,17 @@ function drawBorders() {
   }
   {
     d = new Date();
-    sun = SunCalc.getTimes(d, lat, lon);
+    const sun = SunCalc.getTimes(d, lat, lon);
     g.setColor(0.5, 0.5, 0);
     print("sun", sun);
     drawTimeIcon(sun.sunset, img_sunrise, { rotate: Math.PI, scale: 2 });
     drawTimeIcon(sun.sunrise, img_sunrise, { scale: 2 });
     g.setColor(0, 0, 0);
-    moon = SunCalc.getMoonTimes(d, lat, lon);
+    const moon = SunCalc.getMoonTimes(d, lat, lon);
     print("moon", moon);
     drawTimeIcon(moon.set, img_moonrise, { rotate: Math.PI, scale: 2 });
     drawTimeIcon(moon.rise, img_sunrise, { scale: 2 });
-    pos = SunCalc.getPosition(d, lat, lon);
+    let pos = SunCalc.getPosition(d, lat, lon);
     print("sun:", pos);
     if (pos.altitude > -0.1) {
       g.setColor(0.5, 0.5, 0);

apps/owmweather/settings.js

@@ -70,7 +70,7 @@
           E.showMenu(buildMainMenu());
         });
       } else {
-        E.showPrompt("Install a text input lib"),then(()=>{
+        E.showPrompt("Install a text input lib"),then(()=>{ // TODO: Should `,then` have been `.then` ?
           E.showMenu(buildMainMenu());
         });
       }

apps/podadrem/app.js

@@ -16,7 +16,7 @@ let dark = g.theme.dark; // bool
 let gfx = function() {
   widgetUtils.hide();
   R = Bangle.appRect;
-  marigin = 8;
+  const marigin = 8;
   // g.drawString(str, x, y, solid)
   g.clearRect(R);
   g.reset();
@@ -53,9 +53,9 @@ let gfx = function() {
 
 // Touch handler for main layout
 let touchHandler = function(_, xy) {
-  x = xy.x;
-  y = xy.y;
-  len = (R.w<R.h+1)?(R.w/3):(R.h/3);
+  let x = xy.x;
+  let y = xy.y;
+  let len = (R.w<R.h+1)?(R.w/3):(R.h/3);
   
   // doing a<b+1 seemed faster than a<=b, also using a>b-1 instead of a>=b.
   if ((R.x-1<x && x<R.x+len) && (R.y-1<y && y<R.y+len)) {
@@ -142,7 +142,7 @@ let simpleSearchTerm = function() { // input a simple search term without tags,
 };
 
 let searchPlayWOTags = function() { //make a search and play using entered terms
-  searchString = simpleSearch;
+  const searchString = simpleSearch;
   Bluetooth.println("");
   Bluetooth.println(JSON.stringify({
     t: "intent",

apps/pooqroman/app.js

@@ -347,7 +347,7 @@ const events = {
     },
 
     scan: function(now, from, to, f) {
-        result = Infinity;
+        let result = Infinity;
         let o = now.getTimezoneOffset() * 60000;
         let t = now.getTime() - o;
         let c, p, i, l = from - o, h = to - o;

apps/pooqroman/resourcer.js

@@ -92,7 +92,7 @@ const prepFont = (name, data) => {
     //const w0 = lengths[min];
     let widths = '';
     for (c = min, o = 0; c <= max; c++) {
-        for (i = 0, j = offsets[c]; i < lengths[c]; i++) {
+        for (let i = 0, j = offsets[c]; i < lengths[c]; i++) {
             xoffs[j] = asc + body + adjustments[c] - 1;
             ypos[j++] = o++;
         }
@@ -113,7 +113,7 @@ const prepFont = (name, data) => {
     return x;
 };
 
-res = `
+let res = `
 const heatshrink = require('heatshrink');
 const dec = x => E.toString(heatshrink.decompress(atob(x)));
 `;

apps/pooqround/resourcer.js

@@ -92,7 +92,7 @@ const prepFont = (name, data) => {
     //const w0 = lengths[min];
     let widths = '';
     for (c = min, o = 0; c <= max; c++) {
-        for (i = 0, j = offsets[c]; i < lengths[c]; i++) {
+        for (let i = 0, j = offsets[c]; i < lengths[c]; i++) {
             xoffs[j] = asc + body + adjustments[c] - 1;
             ypos[j++] = o++;
         }
@@ -113,7 +113,7 @@ const prepFont = (name, data) => {
     return x;
 };
 
-res = `
+let res = `
 const heatshrink = require('heatshrink');
 const dec = x => E.toString(heatshrink.decompress(atob(x)));
 `;

apps/promenu/boot.js

@@ -1,6 +1,6 @@
 E.showMenu = function(items) {
   function RectRnd(x1,y1,x2,y2,r) {
-    pp = [];
+    let pp = [];
     pp.push.apply(pp,g.quadraticBezier([x2-r,y1, x2,y1,x2,y1+r]));
     pp.push.apply(pp,g.quadraticBezier([x2,y2-r,x2,y2,x2-r,y2]));
     pp.push.apply(pp,g.quadraticBezier([x1+r,y2,x1,y2,x1,y2-r]));

apps/promenu/bootb2.js

@@ -1,6 +1,6 @@
 E.showMenu = function(items) {
   function RectRnd(x1,y1,x2,y2,r) {
-    pp = [];
+    let pp = [];
     pp.push.apply(pp,g.quadraticBezier([x2-r,y1, x2,y1,x2,y1+r]));
     pp.push.apply(pp,g.quadraticBezier([x2,y2-r,x2,y2,x2-r,y2]));
     pp.push.apply(pp,g.quadraticBezier([x1+r,y2,x1,y2,x1,y2-r]));

apps/qcenter/settings.js

@@ -143,7 +143,7 @@
     showMainMenu();
   };
   let timeoutvalues = [10,20,30,60];
-  for (c in timeoutvalues){
+  for (const c in timeoutvalues){
     let v = timeoutvalues[c];
     timeoutMenu[v+"s"] = function () {
       save("timeout", v);

apps/quoteclock/app.js

@@ -105,12 +105,12 @@ function drawStrCenter(str, colour) {
     g.setColor(colour);
     g.setFont("Vector", 13);
     str = "\"" + str + "\"";
-    maxLength = 24;
+    const maxLength = 24;
     var ta = [];
     let index = 0;
     let linestart = 0;
     while (index < str.length) {
-        newIndex = str.indexOf(" ", index);
+        const newIndex = str.indexOf(" ", index);
         if (newIndex == -1) {
             if ((str.length - linestart) > maxLength) {
                 ta.push(str.substring(linestart, index));
@@ -122,7 +122,7 @@ function drawStrCenter(str, colour) {
             linestart = index;
         } else index = newIndex + 1;
     }
-    y = 110 - ta.length * 5;
+    let y = 110 - ta.length * 5;
     ta.forEach((e) => {
         g.setFontAlign(0, -1).drawString(e.trim(), 88, y);
         y += 12;

apps/random/app.js

@@ -110,8 +110,8 @@ function showCardMenu() {
     },
     'Go': () => {
       n = Math.min(n, 52);
-      SUITS = ['Spades', 'Diamonds', 'Clubs', 'Hearts'];
-      RANKS = ['Ace', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'Jack', 'Queen', 'King'];
+      const SUITS = ['Spades', 'Diamonds', 'Clubs', 'Hearts'];
+      const RANKS = ['Ace', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'Jack', 'Queen', 'King'];
       class Card {
         constructor(suit, rank) {
           this.suit = suit;

apps/rclock/rclock.app.js

@@ -90,17 +90,17 @@ const drawSecArc = function (sections, color) {
 
 const drawClock = function () {
   g.reset();
-  currentTime = new Date();
+  let currentTime = new Date();
 
   //Set to initial time when started
   if (first == true) {
     minutes = currentTime.getMinutes();
     seconds = currentTime.getSeconds();
-    for (count = 0; count <= minutes; count++) {
+    for (let count = 0; count <= minutes; count++) {
       drawMinArc(count, settings.circle.colormin);
     }
 
-    for (count = 0; count <= seconds; count++) {
+    for (let count = 0; count <= seconds; count++) {
       drawSecArc(count, settings.circle.colorsec);
     }
     first = false;
@@ -110,7 +110,7 @@ const drawClock = function () {
   if (seconds == 59) {
     g.setColor('#000000');
     g.fillCircle(settings.circle.middle, settings.circle.center, (settings.circle.height / 2));
-    for (count = 0; count <= minutes; count++) {
+    for (let count = 0; count <= minutes; count++) {
       drawMinArc(count, settings.circle.colormin);
     }
   }

apps/rebble/rebble.app.js

@@ -313,7 +313,7 @@ Graphics.prototype.setFontKdamThmor = function(scale) {
     if( Bangle.isCharging() )
     {
       g.setBgColor(settings.bg);
-      image = ()=> { return require("heatshrink").decompress(atob("j8OwMB/4AD94DC44DCwP//n/gH//EOgE/+AdBh/gAYMH4EAvkDAYP/+/AFAX+FgfzGAnAA=="));}
+      const image = ()=> { return require("heatshrink").decompress(atob("j8OwMB/4AD94DC44DCwP//n/gH//EOgE/+AdBh/gAYMH4EAvkDAYP/+/AFAX+FgfzGAnAA=="));}
       g.drawImage(image(),x+3,y+4);
     }
 

apps/rebbleagenda/app.js

@@ -250,8 +250,8 @@
     let oldPoly2 = CLEAR_POLYS_2[0];
     doAnim(i => {
       i = ease(i);
-      poly1 = interpolatePoly(CLEAR_POLYS_1, i);
-      poly2 = interpolatePoly(CLEAR_POLYS_2, i);
+      const poly1 = interpolatePoly(CLEAR_POLYS_1, i);
+      const poly2 = interpolatePoly(CLEAR_POLYS_2, i);
       // Fill in black line
       g.setColor(TEXT_COLOR);
       g.fillPoly(poly1);

apps/rellotge/rellotge.js

@@ -22,6 +22,7 @@
     g.setFontAlign(-1, 0);
 
     // draw time
+    let t;
     if (m >= 0 && m < 2) {
       t = leshores[d.getHours()] + "\r\nen punt";
     } else if (m >= 2 && m < 5) {

apps/rings/app.js

@@ -145,7 +145,7 @@ function drawMonthCircleText( text, circleSize, range, value){
     grimg.transparent = 1;  
     monthCircleTextBuffer.setColor(1,1,1);
 
-    for(z=0; z < text.length; z++){
+    for(let z=0; z < text.length; z++){
       tobj = { x:watch.screen.centerX, y:watch.screen.centerY, scale:1, rotate: ((z + 1) / range) * (Math.PI * 2) };
       tver = [-1, 0, 1, 0, 1, -circleSize, -1, -(circleSize -21)];
       tran = monthCircleTextBuffer.transformVertices(tver, tobj);

apps/rndmclk/widget.js

@@ -19,7 +19,7 @@
       // Only update the file if the clock really changed to be nice to the FLASH mem
       if (clockApps[clockIndex].src != currentClock) {
         currentClock = clockApps[clockIndex].src;
-        settings = require("Storage").readJSON('setting.json', 1);
+        const settings = require("Storage").readJSON('setting.json', 1);
         settings.clock = clockApps[clockIndex].src;
         require("Storage").write('setting.json', settings);
         

apps/rtorch/app.js

@@ -1,7 +1,7 @@
 Bangle.setLCDPower(1);
 Bangle.setLCDTimeout(0);
 g.reset();
-c = 1;
+let c = 1;
 
 function setColor(delta){
   c+=delta;

apps/ruuviwatch/ruuviwatch.app.js

@@ -16,9 +16,9 @@ let paused = false;
 const SCAN_FREQ = 1000 * 30;
 
 // ALERT LIMITS
-LIMIT_SAUNA = 60;
-LIMIT_FRIDGE = 4;
-LIMIT_FREEZER = -18;
+const LIMIT_SAUNA = 60;
+const LIMIT_FRIDGE = 4;
+const LIMIT_FREEZER = -18;
 // TODO add wine cellar limits
 // TODO configurable limits
 

apps/score/score.app.js

@@ -96,7 +96,6 @@ function setupMatch() {
 
 function showSettingsMenu() {
   settingsMenuOpened = getSecondsTime();
-  l = null;
   settingsMenu(function (s, reset) {
     E.showMenu();
 

apps/seiko-5actus/app.js

@@ -120,7 +120,7 @@ function drawHands() {
   else {g.setColor(g.theme.bg);}
   g.drawString(weekDay[0].toUpperCase(), 137, 90);
 
-  handLayers = [
+  const handLayers = [
     {x:cx,
      y:cy,
      image:imgHour,
@@ -148,7 +148,7 @@ function drawBackground() {
   g.clear(1);
   g.setBgColor(g.theme.bg);
   g.setColor(g.theme.fg);
-  bgLayer = [
+  const bgLayer = [
     {x:cx,
      y:cy,
      image:imgBg,

apps/setting/settings.js

@@ -761,7 +761,7 @@ function showLauncherMenu() {
 }
 
 function showSetTimeMenu() {
-  d = new Date();
+  let d = new Date();
   const timemenu = {
     '': { 'title': /*LANG*/'Date & Time' },
     '< Back': function () {

apps/showimg/app.js

@@ -1,7 +1,7 @@
 g.reset();
 g.clear();
 g.drawImage(require("Storage").read("showimg.user.img"),0,0);
-drawTimeout = setTimeout(function() {
+/*let drawTimeout =*/ setTimeout(function() {
 	load();
 }, 60000);
 setWatch(function() {

apps/speedalt2/app.js

@@ -329,7 +329,7 @@ function drawClock() {
   y=0;
   buf.setFontAlign(1,-1);
   buf.setFontVector(94);
-  time = require("locale").time(new Date(),1);
+  const time = require("locale").time(new Date(),1);
 
   buf.setColor(1);
 

apps/sunclock/app.js

@@ -3,10 +3,10 @@ Peter Bernschneider 30.12.2021
 Update current latitude and longitude in My Location app
 Update current Timezone in Settings app, menu item "System"
 Update for summer time by incrementing Timezone += 1 */
-setting = require("Storage").readJSON("setting.json",1);
+const setting = require("Storage").readJSON("setting.json",1);
 E.setTimeZone(setting.timezone); // timezone = 1 for MEZ, = 2 for MESZ
-SunCalc = require("suncalc.js");
-loc = require('locale');
+const SunCalc = require("suncalc.js");
+const loc = require('locale');
 const LOCATION_FILE = "mylocation.json";
 const xyCenter = g.getWidth() / 2 + 3;
 const yposTime =  60;
@@ -28,9 +28,9 @@ function updatePos() {
         altitude: Math.round( pos.altitude / rad)
     };
   }
-  coord = require("Storage").readJSON(LOCATION_FILE,1)|| {"lat":53.3,"lon":10.1,"location":"Pattensen"};
+  const coord = require("Storage").readJSON(LOCATION_FILE,1)|| {"lat":53.3,"lon":10.1,"location":"Pattensen"};
   pos = radToDeg(SunCalc.getPosition(Date.now(), coord.lat, coord.lon));
-  times = SunCalc.getTimes(Date.now(), coord.lat, coord.lon);
+  const times = SunCalc.getTimes(Date.now(), coord.lat, coord.lon);
   rise = times.sunrise.toString().split(" ")[4].substr(0,5);
   set  = times.sunset.toString().split(" ")[4].substr(0,5);
   noonpos = radToDeg(SunCalc.getPosition(times.solarNoon, coord.lat, coord.lon));

apps/sunrise/app.js

@@ -88,7 +88,7 @@ Date.prototype.sunriseSet = function (latitude, longitude, sunrise, zenith) {
 
   sinDec = 0.39782 * Math.sinDeg(sunTrueLongitude);
   cosDec = Math.cosDeg(Math.asinDeg(sinDec));
-  cosLocalHourAngle = ((Math.cosDeg(zenith)) - (sinDec * (Math.sinDeg(latitude)))) / (cosDec * (Math.cosDeg(latitude)));
+  const cosLocalHourAngle = ((Math.cosDeg(zenith)) - (sinDec * (Math.sinDeg(latitude)))) / (cosDec * (Math.cosDeg(latitude)));
 
   localHourAngle = Math.acosDeg(cosLocalHourAngle);
 
@@ -190,7 +190,7 @@ function drawSinuses () {
   g.setColor(1, 1, 1);
   let y = ypos(x);
   while (x < w) {
-    y2 = ypos(x + sinStep);
+    const y2 = ypos(x + sinStep);
     g.drawLine(x, y, x + sinStep, y2);
     y = y2;
     x += sinStep; // no need to draw all steps

apps/supmariodark/supmariodark.js

@@ -46,10 +46,10 @@ const drawBanner = (h) =>{
 const updateTimeBanner = (h,m)=>{
     m = (m<10?'0':'')+m;
 	h = (h<10?'0':'')+h;
-	bx1=g.getWidth()/2-90;
-    by1=50+10;
-    bx2=g.getWidth()/2+90;
-    by2=50+62;
+	const bx1=g.getWidth()/2-90;
+    const by1=50+10;
+    const bx2=g.getWidth()/2+90;
+    const by2=50+62;
   
 	g.setFontCustom(eval(s.read("supmario30x24.bin")), 48, eval(s.read("supmario30x24.wdt")), 24);
 	g.setClipRect(bx1,by1,bx2,by2).clearRect(bx1,by1,bx2,by2);

apps/swipeinv/settings.js

@@ -11,7 +11,7 @@
   }
 
   function appMenu() {
-    menu = {
+    let menu = {
       "" : { "title" : /*LANG*/"Swipe inversion apps" },
       "< Back" : () => { writeSettings(); mainMenu();}
     };

apps/swscroll/boot.js

@@ -34,7 +34,7 @@ Bangle.setUI({
   remove : options.remove,
   redraw : draw,
   swipe : (_,UD)=>{
-    pixels = 120;
+    const pixels = 120;
     var dy = UD*pixels;
     if (s.scroll - dy > menuScrollMax)
       dy = s.scroll - menuScrollMax-8; // Makes it so the last 'page' has the same position as previous pages. This should be done dynamically (change the static 8 to be a variable) so the offset is correct even when no widget field or title field is present.

apps/synthwave/app.js

@@ -701,7 +701,7 @@ function probe() {
       stride = 68;
     }
     */
-  stride = 68;
+  let stride = 68;
 
   lcdBuffer = start;
   print('Found lcdBuffer at ' + lcdBuffer.toString(16) + ' stride=' + stride);

apps/teatimer/app.js

@@ -22,7 +22,7 @@ function appTitle() {
 }
 
 function currentTime() {
-  min = Date().getMinutes();
+  let min = Date().getMinutes();
   if (min < 10) min = "0" + min;
   return Date().getHours() + ":" + min;
 }

apps/tempmonitor/tempmonitor.app.js

@@ -30,7 +30,8 @@ if (readFreq>saveFreq) console.log("Read refresh freq should be higher than savi
 if (v_mode_debug>0) console.log("original BG/FG color="+v_color_erase+" / "+v_color);
 
 
-
+let v_font_size1;
+let v_font_size2;
 function SetVariables(){
 //EMSCRIPTEN,EMSCRIPTEN2
 if (v_model=='BANGLEJS'||v_model=='EMSCRIPTEN') {
@@ -209,7 +210,7 @@ g.drawString("Mode debug: "+v_mode_debug, x, y - ((v_font_size1*1)+2));
 g.drawString("Read frq(ms): "+readFreq, x, y );
 g.drawString("Save file: "+v_saveToFile, x, y+ ((v_font_size1*1)+2) );
 g.drawString("Save frq(ms):"+saveFreq, x, y+((v_font_size1*2)+2) );
-fr=require("Storage").read(v_filename+"\1");//suffix required
+const fr=require("Storage").read(v_filename+"\1");//suffix required
 if (fr)  g.drawString("Filesize:"+fr.length.toString()+"kb", x, y+((v_font_size1*3)+2) );
 else g.drawString("File not exist", x, y+((v_font_size1*3)+2));
 }

apps/testuserinput/app.js

@@ -156,6 +156,7 @@ function PrintUserInput(boton){
             //Call info banner
             g.setFontVector(30).drawString(boton, 63, 55);
             if ((boton=='Touch 1')||(boton=='Touch 2')){
+                let v_y_opt;
                 if (v_selected_row==1) v_y_opt=v_y_optionrow1;
                     else if (v_selected_row==2) v_y_opt=v_y_optionrow2;         
                 DrawRoundOption(20,v_y_opt,190,v_y_opt,boton);

apps/tictactoe/app.js

@@ -69,7 +69,7 @@ function calcWin(){
   
   //draw check
   // drawChk is sum absolute value of array, if drawChk = 9 then there is a draw
-  drawChk = 0;
+  let drawChk = 0;
   for(let i = 0; i<3; i++){
     for(let j = 0; j<3; j++){
       drawChk = drawChk + Math.abs(arr[i][j]);
@@ -94,6 +94,7 @@ function calcWin(){
 
 function draw(){
   g.clear();
+  let playerIcon;
   if (player ==1){
     playerIcon = "X";
   } else if(player == -1){