fix the first 100 prefer-const errors

src/web/ControlsWaiter.js

@@ -23,14 +23,14 @@ const ControlsWaiter = function(app, manager) {
  * without wrapping or overflowing.
  */
 ControlsWaiter.prototype.adjustWidth = function() {
-    let controls     = document.getElementById("controls"),
+    const controls     = document.getElementById("controls");
-        step         = document.getElementById("step"),
+    const step         = document.getElementById("step");
-        clrBreaks    = document.getElementById("clr-breaks"),
+    const clrBreaks    = document.getElementById("clr-breaks");
-        saveImg      = document.querySelector("#save img"),
+    const saveImg      = document.querySelector("#save img");
-        loadImg      = document.querySelector("#load img"),
+    const loadImg      = document.querySelector("#load img");
-        stepImg      = document.querySelector("#step img"),
+    const stepImg      = document.querySelector("#step img");
-        clrRecipImg  = document.querySelector("#clr-recipe img"),
+    const clrRecipImg  = document.querySelector("#clr-recipe img");
-        clrBreaksImg = document.querySelector("#clr-breaks img");
+    const clrBreaksImg = document.querySelector("#clr-breaks img");
 
     if (controls.clientWidth < 470) {
         step.childNodes[1].nodeValue = " Step";
@@ -100,8 +100,8 @@ ControlsWaiter.prototype.stepClick = function() {
  * Handler for changes made to the Auto Bake checkbox.
  */
 ControlsWaiter.prototype.autoBakeChange = function() {
-    let autoBakeLabel    = document.getElementById("auto-bake-label"),
+    const autoBakeLabel    = document.getElementById("auto-bake-label");
-        autoBakeCheckbox = document.getElementById("auto-bake");
+    const autoBakeCheckbox = document.getElementById("auto-bake");
 
     this.app.autoBake_ = autoBakeCheckbox.checked;
 
@@ -145,10 +145,10 @@ ControlsWaiter.prototype.clearBreaksClick = function() {
 ControlsWaiter.prototype.initialiseSaveLink = function(recipeConfig) {
     recipeConfig = recipeConfig || this.app.getRecipeConfig();
 
-    let includeRecipe = document.getElementById("save-link-recipe-checkbox").checked,
+    const includeRecipe = document.getElementById("save-link-recipe-checkbox").checked;
-        includeInput = document.getElementById("save-link-input-checkbox").checked,
+    const includeInput = document.getElementById("save-link-input-checkbox").checked;
-        saveLinkEl = document.getElementById("save-link"),
+    const saveLinkEl = document.getElementById("save-link");
-        saveLink = this.generateStateUrl(includeRecipe, includeInput, recipeConfig);
+    const saveLink = this.generateStateUrl(includeRecipe, includeInput, recipeConfig);
 
     saveLinkEl.innerHTML = Utils.truncate(saveLink, 120);
     saveLinkEl.setAttribute("href", saveLink);
@@ -167,23 +167,27 @@ ControlsWaiter.prototype.initialiseSaveLink = function(recipeConfig) {
 ControlsWaiter.prototype.generateStateUrl = function(includeRecipe, includeInput, recipeConfig, baseURL) {
     recipeConfig = recipeConfig || this.app.getRecipeConfig();
 
-    let link = baseURL || window.location.protocol + "//" +
+    const link = baseURL || window.location.protocol + "//" +
                 window.location.host +
-                window.location.pathname,
+                window.location.pathname;
-        recipeStr = JSON.stringify(recipeConfig),
+    const recipeStr = JSON.stringify(recipeConfig);
-        inputStr = Utils.toBase64(this.app.getInput(), "A-Za-z0-9+/"); // B64 alphabet with no padding
+    const inputStr = Utils.toBase64(this.app.getInput(), "A-Za-z0-9+/"); // B64 alphabet with no padding
 
-    includeRecipe = includeRecipe && (recipeConfig.length > 0);
+    const myIncludeRecipe = includeRecipe && (recipeConfig.length > 0);
-    includeInput = includeInput && (inputStr.length > 0) && (inputStr.length < 8000);
+    const myIncludeInput = includeInput && (inputStr.length > 0) && (inputStr.length < 8000);
 
-    if (includeRecipe) {
+    const params = [
-        link += "?recipe=" + encodeURIComponent(recipeStr);
+        myIncludeRecipe ? ["recipe", recipeStr] : undefined,
-    }
+        myIncludeInput ? ["input", inputStr] : undefined,
+    ];
 
-    if (includeRecipe && includeInput) {
+    const query = params
-        link += "&input=" + encodeURIComponent(inputStr);
+       .filter(v => v)
-    } else if (includeInput) {
+       .map(([key, value]) => `${key}=${encodeURIComponent(value)}`)
-        link += "?input=" + encodeURIComponent(inputStr);
+       .join("&");
+
+    if (query) {
+        return `${link}?${query}`;
     }
 
     return link;
@@ -205,8 +209,8 @@ ControlsWaiter.prototype.saveTextChange = function() {
  * Handler for the 'Save' command. Pops up the save dialog box.
  */
 ControlsWaiter.prototype.saveClick = function() {
-    let recipeConfig = this.app.getRecipeConfig(),
+    const recipeConfig = this.app.getRecipeConfig();
-        recipeStr = JSON.stringify(recipeConfig).replace(/},{/g, "},\n{");
+    const recipeStr = JSON.stringify(recipeConfig).replace(/},{/g, "},\n{");
 
     document.getElementById("save-text").value = recipeStr;
 
@@ -303,13 +307,11 @@ ControlsWaiter.prototype.populateLoadRecipesList = function() {
  * Removes the currently selected recipe from local storage.
  */
 ControlsWaiter.prototype.loadDeleteClick = function() {
-    let id = parseInt(document.getElementById("load-name").value, 10),
+    const id = parseInt(document.getElementById("load-name").value, 10);
-        savedRecipes = localStorage.savedRecipes ?
+    const rawSavedRecipes = localStorage.savedRecipes ?
             JSON.parse(localStorage.savedRecipes) : [];
 
-    savedRecipes = savedRecipes.filter(function(r) {
+    const savedRecipes = rawSavedRecipes.filter(r => r.id !== id);
-        return r.id !== id;
-    });
 
     localStorage.savedRecipes = JSON.stringify(savedRecipes);
     this.populateLoadRecipesList();
@@ -320,14 +322,12 @@ ControlsWaiter.prototype.loadDeleteClick = function() {
  * Displays the selected recipe in the load text box.
  */
 ControlsWaiter.prototype.loadNameChange = function(e) {
-    let el = e.target,
+    const el = e.target;
-        savedRecipes = localStorage.savedRecipes ?
+    const savedRecipes = localStorage.savedRecipes ?
-            JSON.parse(localStorage.savedRecipes) : [],
+            JSON.parse(localStorage.savedRecipes) : [];
-        id = parseInt(el.value, 10);
+    const id = parseInt(el.value, 10);
 
-    const recipe = savedRecipes.filter(function(r) {
+    const recipe = savedRecipes.find(r => r.id === id);
-        return r.id === id;
-    })[0];
 
     document.getElementById("load-text").value = recipe.recipe;
 };
@@ -352,8 +352,8 @@ ControlsWaiter.prototype.loadButtonClick = function() {
  * Populates the bug report information box with useful technical info.
  */
 ControlsWaiter.prototype.supportButtonClick = function() {
-    let reportBugInfo = document.getElementById("report-bug-info"),
+    const reportBugInfo = document.getElementById("report-bug-info");
-        saveLink = this.generateStateUrl(true, true, null, "https://gchq.github.io/CyberChef/");
+    const saveLink = this.generateStateUrl(true, true, null, "https://gchq.github.io/CyberChef/");
 
     reportBugInfo.innerHTML = "* CyberChef compile time: " + COMPILE_TIME + "\n" +
         "* User-Agent: \n" + navigator.userAgent + "\n" +

src/web/HTMLIngredient.js

@@ -158,13 +158,12 @@ HTMLIngredient.prototype.toHtml = function() {
  * @param {event} e
  */
 HTMLIngredient.prototype.toggleDisableArgs = function(e) {
-    let el = e.target,
+    const el = e.target;
-        op = el.parentNode.parentNode,
+    const op = el.parentNode.parentNode;
-        args = op.querySelectorAll(".arg-group"),
+    const args = op.querySelectorAll(".arg-group");
-        els;
 
     for (let i = 0; i < this.disableArgs.length; i++) {
-        els = args[this.disableArgs[i]].querySelectorAll("input, select, button");
+        const els = args[this.disableArgs[i]].querySelectorAll("input, select, button");
 
         for (let j = 0; j < els.length; j++) {
             if (els[j].getAttribute("disabled")) {
@@ -186,9 +185,9 @@ HTMLIngredient.prototype.toggleDisableArgs = function(e) {
  * @param {event} e
  */
 HTMLIngredient.prototype.populateOptionChange = function(e) {
-    let el = e.target,
+    const el = e.target;
-        op = el.parentNode.parentNode,
+    const op = el.parentNode.parentNode;
-        target = op.querySelectorAll(".arg-group")[this.target].querySelector("input, select, textarea");
+    const target = op.querySelectorAll(".arg-group")[this.target].querySelector("input, select, textarea");
 
     target.value = el.childNodes[el.selectedIndex].getAttribute("populate-value");
 

src/web/HighlighterWaiter.js

@@ -64,8 +64,8 @@ HighlighterWaiter.prototype._isSelectionBackwards = function() {
  * @returns {number}
  */
 HighlighterWaiter.prototype._getOutputHtmlOffset = function(node, offset) {
-    let sel = window.getSelection(),
+    const sel = window.getSelection();
-        range = document.createRange();
+    const range = document.createRange();
 
     range.selectNodeContents(document.getElementById("output-html"));
     range.setEnd(node, offset);
@@ -85,8 +85,8 @@ HighlighterWaiter.prototype._getOutputHtmlOffset = function(node, offset) {
  * @returns {number} pos.end
  */
 HighlighterWaiter.prototype._getOutputHtmlSelectionOffsets = function() {
-    let sel = window.getSelection(),
+    const sel = window.getSelection();
-        range,
+    let range,
         start = 0,
         end = 0,
         backwards = false;
@@ -151,9 +151,9 @@ HighlighterWaiter.prototype.inputMousedown = function(e) {
     this.mouseTarget = HighlighterWaiter.INPUT;
     this.removeHighlights();
 
-    let el = e.target,
+    const el = e.target;
-        start = el.selectionStart,
+    const start = el.selectionStart;
-        end = el.selectionEnd;
+    const end = el.selectionEnd;
 
     if (start !== 0 || end !== 0) {
         document.getElementById("input-selection-info").innerHTML = this.selectionInfo(start, end);
@@ -173,9 +173,9 @@ HighlighterWaiter.prototype.outputMousedown = function(e) {
     this.mouseTarget = HighlighterWaiter.OUTPUT;
     this.removeHighlights();
 
-    let el = e.target,
+    const el = e.target;
-        start = el.selectionStart,
+    const start = el.selectionStart;
-        end = el.selectionEnd;
+    const end = el.selectionEnd;
 
     if (start !== 0 || end !== 0) {
         document.getElementById("output-selection-info").innerHTML = this.selectionInfo(start, end);
@@ -244,9 +244,9 @@ HighlighterWaiter.prototype.inputMousemove = function(e) {
         this.mouseTarget !== HighlighterWaiter.INPUT)
         return;
 
-    let el = e.target,
+    const el = e.target;
-        start = el.selectionStart,
+    const start = el.selectionStart;
-        end = el.selectionEnd;
+    const end = el.selectionEnd;
 
     if (start !== 0 || end !== 0) {
         document.getElementById("input-selection-info").innerHTML = this.selectionInfo(start, end);
@@ -268,9 +268,9 @@ HighlighterWaiter.prototype.outputMousemove = function(e) {
         this.mouseTarget !== HighlighterWaiter.OUTPUT)
         return;
 
-    let el = e.target,
+    const el = e.target;
-        start = el.selectionStart,
+    const start = el.selectionStart;
-        end = el.selectionEnd;
+    const end = el.selectionEnd;
 
     if (start !== 0 || end !== 0) {
         document.getElementById("output-selection-info").innerHTML = this.selectionInfo(start, end);
@@ -308,11 +308,11 @@ HighlighterWaiter.prototype.outputHtmlMousemove = function(e) {
  * @returns {string}
  */
 HighlighterWaiter.prototype.selectionInfo = function(start, end) {
-    let width = end.toString().length;
+    const len = end.toString().length;
-    width = width < 2 ? 2 : width;
+    const width = len < 2 ? 2 : len;
-    let startStr = Utils.pad(start.toString(), width, " ").replace(/ /g, "&nbsp;"),
+    const startStr = Utils.pad(start.toString(), width, " ").replace(/ /g, "&nbsp;");
-        endStr   = Utils.pad(end.toString(), width, " ").replace(/ /g, "&nbsp;"),
+    const endStr   = Utils.pad(end.toString(), width, " ").replace(/ /g, "&nbsp;");
-        lenStr   = Utils.pad((end-start).toString(), width, " ").replace(/ /g, "&nbsp;");
+    const lenStr   = Utils.pad((end-start).toString(), width, " ").replace(/ /g, "&nbsp;");
 
     return "start: " + startStr + "<br>end: " + endStr + "<br>length: " + lenStr;
 };
@@ -339,8 +339,8 @@ HighlighterWaiter.prototype.removeHighlights = function() {
  * @returns {Object[]} highlights[].args
  */
 HighlighterWaiter.prototype.generateHighlightList = function() {
-    let recipeConfig = this.app.getRecipeConfig(),
+    const recipeConfig = this.app.getRecipeConfig();
-        highlights = [];
+    const highlights = [];
 
     for (let i = 0; i < recipeConfig.length; i++) {
         if (recipeConfig[i].disabled) continue;
@@ -452,11 +452,11 @@ HighlighterWaiter.prototype.highlight = function(textarea, highlighter, pos) {
     // be displayed by the HTML textarea and will mess up highlighting offsets.
     if (!this.app.dishStr || this.app.dishStr.indexOf("\r") >= 0) return false;
 
-    let startPlaceholder = "[startHighlight]",
+    const startPlaceholder = "[startHighlight]";
-        startPlaceholderRegex = /\[startHighlight\]/g,
+    const startPlaceholderRegex = /\[startHighlight\]/g;
-        endPlaceholder = "[endHighlight]",
+    const endPlaceholder = "[endHighlight]";
-        endPlaceholderRegex = /\[endHighlight\]/g,
+    const endPlaceholderRegex = /\[endHighlight\]/g;
-        text = textarea.value;
+    let text = textarea.value;
 
     // Put placeholders in position
     // If there's only one value, select that

src/web/InputWaiter.js

@@ -92,8 +92,8 @@ InputWaiter.prototype.inputChange = function(e) {
     this.app.progress = 0;
 
     // Update the input metadata info
-    let inputText = this.get(),
+    const inputText = this.get();
-        lines = inputText.count("\n") + 1;
+    const lines = inputText.count("\n") + 1;
 
     this.setInputInfo(inputText.length, lines);
 
@@ -149,13 +149,13 @@ InputWaiter.prototype.inputDrop = function(e) {
     e.stopPropagation();
     e.preventDefault();
 
-    let el = e.target,
+    const el = e.target;
-        file = e.dataTransfer.files[0],
+    const file = e.dataTransfer.files[0];
-        text = e.dataTransfer.getData("Text"),
+    const text = e.dataTransfer.getData("Text");
-        reader = new FileReader(),
+    const reader = new FileReader();
-        inputCharcode = "",
+    let inputCharcode = "";
-        offset = 0,
+    let offset = 0;
-        CHUNK_SIZE = 20480; // 20KB
+    const CHUNK_SIZE = 20480; // 20KB
 
     const setInput = function() {
         if (inputCharcode.length > 100000 && this.app.autoBake_) {

src/web/Manager.js

@@ -261,15 +261,16 @@ Manager.prototype.addDynamicListener = function(selector, eventType, callback, s
  * @param {Event} e - The event to be handled
  */
 Manager.prototype.dynamicListenerHandler = function(e) {
-    let handlers = this.dynamicHandlers[e.type],
+    const { type, target } = e;
-        matches = e.target.matches ||
+    const handlers = this.dynamicHandlers[type];
-            e.target.webkitMatchesSelector ||
+    const matches = target.matches ||
-            e.target.mozMatchesSelector ||
+            target.webkitMatchesSelector ||
-            e.target.msMatchesSelector ||
+            target.mozMatchesSelector ||
-            e.target.oMatchesSelector;
+            target.msMatchesSelector ||
+            target.oMatchesSelector;
 
     for (let i = 0; i < handlers.length; i++) {
-        if (matches && e.target[matches.name](handlers[i].selector)) {
+        if (matches && matches.call(target, handlers[i].selector)) {
             handlers[i].callback(e);
         }
     }

src/web/OperationsWaiter.js

@@ -68,9 +68,9 @@ OperationsWaiter.prototype.searchOperations = function(e) {
             ops[selected-1].classList.add("selected-op");
         }
     } else {
-        let searchResultsEl = document.getElementById("search-results"),
+        const searchResultsEl = document.getElementById("search-results");
-            el = e.target,
+        const el = e.target;
-            str = el.value;
+        const str = el.value;
 
         while (searchResultsEl.firstChild) {
             try {
@@ -81,12 +81,10 @@ OperationsWaiter.prototype.searchOperations = function(e) {
 
         $("#categories .in").collapse("hide");
         if (str) {
-            let matchedOps = this.filterOperations(str, true),
+            const matchedOps = this.filterOperations(str, true);
-                matchedOpsHtml = "";
+            const matchedOpsHtml = matchedOps
-
+                .map(v => v.toStubHtml())
-            for (let i = 0; i < matchedOps.length; i++) {
+                .join("");
-                matchedOpsHtml += matchedOps[i].toStubHtml();
-            }
 
             searchResultsEl.innerHTML = matchedOpsHtml;
             searchResultsEl.dispatchEvent(this.manager.oplistcreate);
@@ -103,16 +101,16 @@ OperationsWaiter.prototype.searchOperations = function(e) {
  *   name and description
  * @returns {string[]}
  */
-OperationsWaiter.prototype.filterOperations = function(searchStr, highlight) {
+OperationsWaiter.prototype.filterOperations = function(inStr, highlight) {
-    let matchedOps = [],
+    const matchedOps = [];
-        matchedDescs = [];
+    const matchedDescs = [];
 
-    searchStr = searchStr.toLowerCase();
+    const searchStr = inStr.toLowerCase();
 
     for (const opName in this.app.operations) {
-        let op = this.app.operations[opName],
+        const op = this.app.operations[opName];
-            namePos = opName.toLowerCase().indexOf(searchStr),
+        const namePos = opName.toLowerCase().indexOf(searchStr);
-            descPos = op.description.toLowerCase().indexOf(searchStr);
+        const descPos = op.description.toLowerCase().indexOf(searchStr);
 
         if (namePos >= 0 || descPos >= 0) {
             const operation = new HTMLOperation(opName, this.app.operations[opName], this.app, this.manager);
@@ -236,12 +234,8 @@ OperationsWaiter.prototype.editFavouritesClick = function(e) {
  * Saves the selected favourites and reloads them.
  */
 OperationsWaiter.prototype.saveFavouritesClick = function() {
-    let favouritesList = [],
+    const favs = document.querySelectorAll("#edit-favourites-list li");
-        favs = document.querySelectorAll("#edit-favourites-list li");
+    const favouritesList = Array.from(favs, e => e.textContent);
-
-    for (let i = 0; i < favs.length; i++) {
-        favouritesList.push(favs[i].textContent);
-    }
 
     this.app.saveFavourites(favouritesList);
     this.app.loadFavourites();
@@ -281,8 +275,8 @@ OperationsWaiter.prototype.opIconMouseover = function(e) {
  * @param {event} e
  */
 OperationsWaiter.prototype.opIconMouseleave = function(e) {
-    let opEl = e.target.parentNode,
+    const opEl = e.target.parentNode;
-        toEl = e.toElement || e.relatedElement;
+    const toEl = e.toElement || e.relatedElement;
 
     if (e.target.getAttribute("data-toggle") === "popover" && toEl === opEl) {
         $(opEl).popover("show");

src/web/OptionsWaiter.js

@@ -75,8 +75,8 @@ OptionsWaiter.prototype.resetOptionsClick = function() {
  * @param {boolean} state
  */
 OptionsWaiter.prototype.switchChange = function(e, state) {
-    let el = e.target,
+    const el = e.target;
-        option = el.getAttribute("option");
+    const option = el.getAttribute("option");
 
     this.app.options[option] = state;
     localStorage.setItem("options", JSON.stringify(this.app.options));
@@ -90,8 +90,8 @@ OptionsWaiter.prototype.switchChange = function(e, state) {
  * @param {event} e
  */
 OptionsWaiter.prototype.numberChange = function(e) {
-    let el = e.target,
+    const el = e.target;
-        option = el.getAttribute("option");
+    const option = el.getAttribute("option");
 
     this.app.options[option] = parseInt(el.value, 10);
     localStorage.setItem("options", JSON.stringify(this.app.options));
@@ -105,8 +105,8 @@ OptionsWaiter.prototype.numberChange = function(e) {
  * @param {event} e
  */
 OptionsWaiter.prototype.selectChange = function(e) {
-    let el = e.target,
+    const el = e.target;
-        option = el.getAttribute("option");
+    const option = el.getAttribute("option");
 
     this.app.options[option] = el.value;
     localStorage.setItem("options", JSON.stringify(this.app.options));

src/web/OutputWaiter.js

@@ -36,10 +36,10 @@ OutputWaiter.prototype.get = function() {
  * @param {number} duration - The length of time (ms) it took to generate the output
  */
 OutputWaiter.prototype.set = function(dataStr, type, duration) {
-    let outputText = document.getElementById("output-text"),
+    const outputText = document.getElementById("output-text");
-        outputHtml = document.getElementById("output-html"),
+    const outputHtml = document.getElementById("output-html");
-        outputHighlighter = document.getElementById("output-highlighter"),
+    const outputHighlighter = document.getElementById("output-highlighter");
-        inputHighlighter = document.getElementById("input-highlighter");
+    const inputHighlighter = document.getElementById("input-highlighter");
 
     if (type === "html") {
         outputText.style.display = "none";
@@ -103,11 +103,11 @@ OutputWaiter.prototype.setOutputInfo = function(length, lines, duration) {
  * without wrapping or overflowing.
  */
 OutputWaiter.prototype.adjustWidth = function() {
-    let output         = document.getElementById("output"),
+    const output         = document.getElementById("output");
-        saveToFile     = document.getElementById("save-to-file"),
+    const saveToFile     = document.getElementById("save-to-file");
-        switchIO       = document.getElementById("switch"),
+    const switchIO       = document.getElementById("switch");
-        undoSwitch     = document.getElementById("undo-switch"),
+    const undoSwitch     = document.getElementById("undo-switch");
-        maximiseOutput = document.getElementById("maximise-output");
+    const maximiseOutput = document.getElementById("maximise-output");
 
     if (output.clientWidth < 680) {
         saveToFile.childNodes[1].nodeValue = "";
@@ -129,8 +129,8 @@ OutputWaiter.prototype.adjustWidth = function() {
  * Saves the current output to a file, downloaded as a URL octet stream.
  */
 OutputWaiter.prototype.saveClick = function() {
-    let data = Utils.toBase64(this.app.dishStr),
+    const data = Utils.toBase64(this.app.dishStr);
-        filename = window.prompt("Please enter a filename:", "download.dat");
+    const filename = window.prompt("Please enter a filename:", "download.dat");
 
     if (filename) {
         const el = document.createElement("a");

src/web/RecipeWaiter.js

@@ -60,8 +60,8 @@ RecipeWaiter.prototype.initialiseOperationDragNDrop = function() {
     }.bind(this));
 
     Sortable.utils.on(recList, "touchend", function(e) {
-        let loc = e.changedTouches[0],
+        const loc = e.changedTouches[0];
-            target = document.elementFromPoint(loc.clientX, loc.clientY);
+        const target = document.elementFromPoint(loc.clientX, loc.clientY);
 
         this.removeIntent = !recList.contains(target);
     }.bind(this));
@@ -276,8 +276,9 @@ RecipeWaiter.prototype.operationChildDblclick = function(e) {
  * @returns {recipeConfig}
  */
 RecipeWaiter.prototype.getConfig = function() {
-    let config = [], ingredients, ingList, disabled, bp, item,
+    const config = [];
-        operations = document.querySelectorAll("#rec-list li.operation");
+    let ingredients, ingList, disabled, bp, item;
+    const operations = document.querySelectorAll("#rec-list li.operation");
 
     for (let i = 0; i < operations.length; i++) {
         ingredients = [];
@@ -402,8 +403,8 @@ RecipeWaiter.prototype.clearRecipe = function() {
  * @param {event} e
  */
 RecipeWaiter.prototype.dropdownToggleClick = function(e) {
-    let el = e.target,
+    const el = e.target;
-        button = el.parentNode.parentNode.previousSibling;
+    const button = el.parentNode.parentNode.previousSibling;
 
     button.innerHTML = el.textContent + " <span class='caret'></span>";
     this.ingChange();

test/index.js

@@ -19,10 +19,10 @@ import "./tests/operations/FlowControl.js";
 import "./tests/operations/MorseCode.js";
 import "./tests/operations/StrUtils.js";
 
-let allTestsPassing = true,
+let allTestsPassing = true;
-    testStatusCounts = {
+const testStatusCounts = {
-        total: 0,
+    total: 0,
-    };
+};
 
 
 /**