diff --git a/client/galaxy/scripts/components/DataDialog/DataDialog.vue b/client/galaxy/scripts/components/DataDialog/DataDialog.vue
index bf4af49e277..4599630f32d 100644
--- a/client/galaxy/scripts/components/DataDialog/DataDialog.vue
+++ b/client/galaxy/scripts/components/DataDialog/DataDialog.vue
@@ -99,7 +99,7 @@ export default {
         },
         /** Add highlighting for record variations, i.e. datasets vs. libraries/collections **/
         formatRows() {
-            for (let item of this.items) {
+            for (const item of this.items) {
                 let _rowVariant = "active";
                 if (item.isDataset) {
                     _rowVariant = this.model.exists(item.id) ? "success" : "default";
@@ -121,7 +121,7 @@ export default {
         },
         /** Called when selection is complete, values are formatted and parsed to external callback **/
         finalize: function() {
-            let results = this.model.finalize();
+            const results = this.model.finalize();
             this.modalShow = false;
             this.callback(results);
         },
diff --git a/client/galaxy/scripts/components/DisplayStructured.vue b/client/galaxy/scripts/components/DisplayStructured.vue
index 9a6adbeb813..4c6ae353961 100644
--- a/client/galaxy/scripts/components/DisplayStructured.vue
+++ b/client/galaxy/scripts/components/DisplayStructured.vue
@@ -56,13 +56,13 @@ export default {
                 });
         },
         _updateHistoryData: function(response) {
-            let historyItems = response.data;
+            const historyItems = response.data;
             this.historyTemplate = historyItems.template;
             this.historyJSON = historyItems.history_json;
         },
         makeHistoryView: function(historyDict) {
             window.hdas = historyDict.map(hda => {
-                let Galaxy = getGalaxyInstance();
+                const Galaxy = getGalaxyInstance();
                 return new HDAListItemEdit.HDAListItemEdit({
                     model: new HDAModel.HistoryDatasetAssociation(hda),
                     el: $("#hda-" + hda.id),
@@ -74,7 +74,7 @@ export default {
             // toggle the body section of each item in the structure
             $(function() {
                 $(".workflow, .tool").each((index, element) => {
-                    let body = $(element).children(".body");
+                    const body = $(element).children(".body");
                     $(element)
                         .children(".header")
                         .click(e => {
diff --git a/client/galaxy/scripts/components/HistoryImport.vue b/client/galaxy/scripts/components/HistoryImport.vue
index 4889a8a0940..042b5b7b91e 100644
--- a/client/galaxy/scripts/components/HistoryImport.vue
+++ b/client/galaxy/scripts/components/HistoryImport.vue
@@ -36,7 +36,7 @@ export default {
             if (!this.sourceFile && !this.sourceURL) {
                 this.errorMessage = "You must provide a history archive URL or file.";
             } else {
-                let formData = new FormData();
+                const formData = new FormData();
                 formData.append("archive_file", this.sourceFile);
                 formData.append("archive_source", this.sourceURL);
                 axios
@@ -47,7 +47,7 @@ export default {
                         }&status=success`;
                     })
                     .catch(error => {
-                        let message = error.response.data && error.response.data.err_msg;
+                        const message = error.response.data && error.response.data.err_msg;
                         this.errorMessage = message || "Import failed for an unknown reason.";
                     });
             }
diff --git a/client/galaxy/scripts/components/HistoryView.vue b/client/galaxy/scripts/components/HistoryView.vue
index 99f40bc46fa..2692bfa76d5 100644
--- a/client/galaxy/scripts/components/HistoryView.vue
+++ b/client/galaxy/scripts/components/HistoryView.vue
@@ -59,7 +59,7 @@ export default {
         };
     },
     created: function() {
-        let url = getAppRoot() + "history/view/" + this.id;
+        const url = getAppRoot() + "history/view/" + this.id;
         this.ajaxCall(url, this.updateHistoryView);
     },
     methods: {
@@ -86,7 +86,7 @@ export default {
         },
         makeHistoryView: function(history) {
             $(function() {
-                let options = {
+                const options = {
                     hasMasthead: history.use_panels ? "true" : "false",
                     userIsOwner: history.user_is_owner ? "true" : "false",
                     isCurrent: history.history_is_current ? "true" : "false",
@@ -104,14 +104,14 @@ export default {
             });
         },
         showStructure: function() {
-            let Galaxy = getGalaxyInstance();
-            let displayStructureInstance = Vue.extend(DisplayStructure),
+            const Galaxy = getGalaxyInstance();
+            const displayStructureInstance = Vue.extend(DisplayStructure),
                 mountView = document.createElement("div");
             Galaxy.page.center.display(mountView);
             new displayStructureInstance({ propsData: { id: QueryStringParsing.get("id") } }).$mount(mountView);
         },
         switchHistory: function() {
-            let url = getAppRoot() + "history/switch_to_history?hist_id=" + this.historyHistory["id"];
+            const url = getAppRoot() + "history/switch_to_history?hist_id=" + this.historyHistory["id"];
             this.ajaxCall(url, this.reloadPage);
         },
         reloadPage: function() {
diff --git a/client/galaxy/scripts/components/Masthead/index.vue b/client/galaxy/scripts/components/Masthead/index.vue
index ba0b6f6ba08..f232e2302b0 100644
--- a/client/galaxy/scripts/components/Masthead/index.vue
+++ b/client/galaxy/scripts/components/Masthead/index.vue
@@ -22,7 +22,7 @@ export default {
                 return;
             }
 
-            let galaxy = getGalaxyInstance();
+            const galaxy = getGalaxyInstance();
 
             // old backbone view
             if (!galaxy.masthead) {
@@ -30,7 +30,7 @@ export default {
             }
 
             // bolt the rendered DOM onto the vue component's element
-            let backboneDom = galaxy.masthead.render();
+            const backboneDom = galaxy.masthead.render();
             this.$el.appendChild(backboneDom.$el[0]);
         }
     }
diff --git a/client/galaxy/scripts/components/Nametags/Nametag.vue b/client/galaxy/scripts/components/Nametags/Nametag.vue
index 183db221f7b..89cfc4a6251 100644
--- a/client/galaxy/scripts/components/Nametags/Nametag.vue
+++ b/client/galaxy/scripts/components/Nametags/Nametag.vue
@@ -14,7 +14,7 @@ export default {
             return this.tag.startsWith("name:") ? this.tag.replace("name:", "") : this.tag;
         },
         tagStyles() {
-            let { primary, contrasting, darker } = keyedColorScheme(this.tag);
+            const { primary, contrasting, darker } = keyedColorScheme(this.tag);
             return {
                 "background-color": primary,
                 color: contrasting,
diff --git a/client/galaxy/scripts/components/PluginList.vue b/client/galaxy/scripts/components/PluginList.vue
index ae55e131fa5..7acf1ff0533 100644
--- a/client/galaxy/scripts/components/PluginList.vue
+++ b/client/galaxy/scripts/components/PluginList.vue
@@ -73,9 +73,9 @@ export default {
         };
     },
     created() {
-        let Galaxy = getGalaxyInstance();
+        const Galaxy = getGalaxyInstance();
         let url = `${getAppRoot()}api/plugins`;
-        let dataset_id = Galaxy.params.dataset_id;
+        const dataset_id = Galaxy.params.dataset_id;
         if (dataset_id) {
             this.fixed = true;
             this.selected = dataset_id;
@@ -95,8 +95,8 @@ export default {
             if (this.fixed) {
                 this.create(plugin);
             } else {
-                let Galaxy = getGalaxyInstance();
-                let history_id = Galaxy.currHistoryPanel && Galaxy.currHistoryPanel.model.id;
+                const Galaxy = getGalaxyInstance();
+                const history_id = Galaxy.currHistoryPanel && Galaxy.currHistoryPanel.model.id;
                 if (history_id) {
                     axios
                         .get(`${getAppRoot()}api/plugins/${plugin.name}?history_id=${history_id}`)
@@ -116,7 +116,7 @@ export default {
             }
         },
         create: function(plugin) {
-            let href = `${plugin.href}?dataset_id=${this.selected}`;
+            const href = `${plugin.href}?dataset_id=${this.selected}`;
             if (plugin.target == "_top") {
                 window.location.href = href;
             } else {
@@ -131,7 +131,7 @@ export default {
             );
         },
         _errorMessage: function(e) {
-            let message = e && e.response && e.response.data && e.response.data.err_msg;
+            const message = e && e.response && e.response.data && e.response.data.err_msg;
             return message || "Request failed for an unknown reason.";
         }
     }
diff --git a/client/galaxy/scripts/components/RuleCollectionBuilder.vue b/client/galaxy/scripts/components/RuleCollectionBuilder.vue
index dccaac7e71a..ba5659f55a8 100644
--- a/client/galaxy/scripts/components/RuleCollectionBuilder.vue
+++ b/client/galaxy/scripts/components/RuleCollectionBuilder.vue
@@ -670,7 +670,7 @@ const ColumnSelector = {
                 return colHeaders;
             }
             const remaining = {};
-            for (let key in colHeaders) {
+            for (const key in colHeaders) {
                 if (this.target.indexOf(parseInt(key)) === -1) {
                     remaining[key] = colHeaders[key];
                 }
@@ -685,7 +685,7 @@ const ColumnSelector = {
         handleInput(value) {
             if (this.multiple) {
                 // https://stackoverflow.com/questions/262427/why-does-parseint-yield-nan-with-arraymap
-                let val = value.map(idx => parseInt(idx));
+                const val = value.map(idx => parseInt(idx));
                 this.$emit("update:target", val);
             } else {
                 let val = parseInt(value);
@@ -951,7 +951,7 @@ export default {
                 if (this.initialElements !== null) {
                     const collectionType = this.initialElements.collection_type;
                     const collectionTypeRanks = collectionType.split(":");
-                    for (let index in collectionTypeRanks) {
+                    for (const index in collectionTypeRanks) {
                         rules.push({
                             type: "add_column_metadata",
                             value: "identifier" + index
@@ -1187,7 +1187,7 @@ export default {
         },
         mappedTargets() {
             const targets = [];
-            for (let mapping of this.mapping) {
+            for (const mapping of this.mapping) {
                 targets.push(mapping.type);
             }
             return targets;
@@ -1195,7 +1195,7 @@ export default {
         unmappedTargets() {
             const targets = [];
             const mappedTargets = this.mappedTargets;
-            for (let target in MAPPING_TARGETS) {
+            for (const target in MAPPING_TARGETS) {
                 const targetModes = MAPPING_TARGETS[target].modes;
 
                 if (targetModes && targetModes.indexOf(this.elementsType) < 0) {
@@ -1217,16 +1217,16 @@ export default {
             return targets;
         },
         colHeaders() {
-            let { data, columns } = this.hotData;
+            const { data, columns } = this.hotData;
             return RuleDefs.colHeadersFor(data, columns);
         },
         colHeadersDisplay() {
             const formattedHeaders = [];
-            for (let colIndex in this.colHeaders) {
+            for (const colIndex in this.colHeaders) {
                 const colHeader = this.colHeaders[colIndex];
                 formattedHeaders[colIndex] = `<b>${_.escape(colHeader)}</b>`;
                 const mappingDisplay = [];
-                for (let mapping of this.mapping) {
+                for (const mapping of this.mapping) {
                     if (mapping.columns.indexOf(parseInt(colIndex)) !== -1) {
                         const mappingDef = MAPPING_TARGETS[mapping.type];
                         mappingDisplay.push(`<i>${_.escape(mappingDef.columnHeader || mappingDef.label)}</i>`);
@@ -1245,7 +1245,7 @@ export default {
         },
         mappingAsDict() {
             const asDict = {};
-            for (let mapping of this.mapping) {
+            for (const mapping of this.mapping) {
                 asDict[mapping.type] = mapping;
             }
             return asDict;
@@ -1261,7 +1261,7 @@ export default {
                     collectionType = "list:list:list:paired";
                 }
                 const collectionTypeRanks = collectionType.split(":");
-                for (let index in collectionTypeRanks) {
+                for (const index in collectionTypeRanks) {
                     const collectionTypeRank = collectionTypeRanks[index];
                     if (collectionTypeRank == "list") {
                         // TODO: drop the numeral at the end if only flat list
@@ -1487,7 +1487,7 @@ export default {
             this.mapping.splice(index, 1);
         },
         refreshAndWait(response) {
-            let Galaxy = getGalaxyInstance();
+            const Galaxy = getGalaxyInstance();
             if (Galaxy && Galaxy.currHistoryPanel) {
                 Galaxy.currHistoryPanel.refreshContents();
             }
@@ -1506,7 +1506,7 @@ export default {
                         "Unknown error encountered while running your upload job, this could be a server issue or a problem with the upload definition.";
                     this.doFullJobCheck(jobId);
                 } else {
-                    let Galaxy = getGalaxyInstance();
+                    const Galaxy = getGalaxyInstance();
                     const history = Galaxy && Galaxy.currHistoryPanel && Galaxy.currHistoryPanel.model;
                     history.refresh();
                     this.oncreate();
@@ -1592,13 +1592,13 @@ export default {
                     this.oncreate();
                 }
             } else {
-                let Galaxy = getGalaxyInstance();
+                const Galaxy = getGalaxyInstance();
                 const historyId = Galaxy.currHistoryPanel.model.id;
                 let elements, targets;
                 if (collectionType) {
                     targets = [];
                     const elementsByCollectionName = this.creationElementsForFetch();
-                    for (let collectionName in elementsByCollectionName) {
+                    for (const collectionName in elementsByCollectionName) {
                         const target = {
                             destination: { type: "hdca" },
                             elements: elementsByCollectionName[collectionName],
@@ -1656,11 +1656,11 @@ export default {
             const collectionType = this.collectionType;
             const elementsByName = {};
 
-            let dataByCollection = {};
+            const dataByCollection = {};
             const collectionNameMap = this.mappingAsDict.collection_name;
             if (collectionNameMap) {
                 const collectionNameTarget = collectionNameMap.columns[0];
-                for (let dataIndex in data) {
+                for (const dataIndex in data) {
                     const row = data[dataIndex];
                     const name = row[collectionNameTarget];
                     if (!dataByCollection[name]) {
@@ -1673,11 +1673,11 @@ export default {
                 dataByCollection[this.collectionName] = data;
             }
 
-            for (let collectionName in dataByCollection) {
+            for (const collectionName in dataByCollection) {
                 const elements = [];
                 const identifiers = [];
 
-                for (let dataIndex in dataByCollection[collectionName]) {
+                for (const dataIndex in dataByCollection[collectionName]) {
                     const rowData = data[dataIndex];
 
                     // For each row, find place in depth for this element.
@@ -1724,7 +1724,7 @@ export default {
                                 .slice(1)
                                 .join(":");
                             let found = false;
-                            for (let element of elementsAtDepth) {
+                            for (const element of elementsAtDepth) {
                                 if (element["name"] == identifier) {
                                     elementsAtDepth = element[subElementProp];
                                     identifiersAtDepth = identifiersAtDepth[identifier];
@@ -1795,7 +1795,7 @@ export default {
 
             const datasets = [];
 
-            for (let dataIndex in data) {
+            for (const dataIndex in data) {
                 const res = this._datasetFor(dataIndex, data, mappingAsDict);
                 datasets.push(res);
             }
@@ -1806,7 +1806,7 @@ export default {
             const parentIdentifiers = parentIdentifiers_ ? parentIdentifiers_ : [];
             let data = [];
             let sources = [];
-            for (let element of elements) {
+            for (const element of elements) {
                 const elementObject = element.object;
                 const identifiers = parentIdentifiers.concat([element.element_identifier]);
                 const collectionTypeLevelSepIndex = collectionType.indexOf(":");
@@ -1818,7 +1818,7 @@ export default {
                     sources.push(source);
                 } else {
                     const restCollectionType = collectionType.slice(collectionTypeLevelSepIndex + 1);
-                    let elementObj = this.populateElementsFromCollectionDescription(
+                    const elementObj = this.populateElementsFromCollectionDescription(
                         elementObject.elements,
                         restCollectionType,
                         identifiers
@@ -1919,7 +1919,7 @@ export default {
         if (this.elementsType !== "collection_contents") {
             let columnCount = null;
             if (this.elementsType == "datasets") {
-                for (let element of this.initialElements) {
+                for (const element of this.initialElements) {
                     if (element.history_content_type == "dataset_collection") {
                         this.errorMessage =
                             "This component can only be used with datasets, you have specified one or more collections.";
@@ -1927,7 +1927,7 @@ export default {
                     }
                 }
             } else {
-                for (let row of this.initialElements) {
+                for (const row of this.initialElements) {
                     if (columnCount == null) {
                         columnCount = row.length;
                     } else {
diff --git a/client/galaxy/scripts/components/Sharing.vue b/client/galaxy/scripts/components/Sharing.vue
index 002c90a3f6e..e4c00dcbffe 100644
--- a/client/galaxy/scripts/components/Sharing.vue
+++ b/client/galaxy/scripts/components/Sharing.vue
@@ -175,8 +175,8 @@ export default {
             }`;
         },
         item_url_parts() {
-            let str = this.item_url;
-            let index = str.lastIndexOf("/");
+            const str = this.item_url;
+            const index = str.lastIndexOf("/");
             return [str.substring(0, index + 1), str.substring(index + 1)];
         },
         published_url() {
@@ -196,7 +196,7 @@ export default {
         }
     },
     data() {
-        let Galaxy = getGalaxyInstance();
+        const Galaxy = getGalaxyInstance();
         return {
             ready: false,
             has_username: Galaxy.user.get("username"),
@@ -232,7 +232,7 @@ export default {
                 .catch(error => (this.err_msg = error.response.data.err_msg));
         },
         setUsername: function() {
-            let Galaxy = getGalaxyInstance();
+            const Galaxy = getGalaxyInstance();
             axios
                 .put(`${getAppRoot()}api/users/${Galaxy.user.id}/information/inputs`, {
                     username: this.new_username || ""
@@ -245,7 +245,7 @@ export default {
                 .catch(error => (this.err_msg = error.response.data.err_msg));
         },
         setSharing: function(action, user_id) {
-            let data = {
+            const data = {
                 action: action,
                 user_id: user_id
             };
diff --git a/client/galaxy/scripts/components/Tags/StatelessTags.vue b/client/galaxy/scripts/components/Tags/StatelessTags.vue
index 8cbaac11041..c45ab737cdd 100644
--- a/client/galaxy/scripts/components/Tags/StatelessTags.vue
+++ b/client/galaxy/scripts/components/Tags/StatelessTags.vue
@@ -44,7 +44,7 @@ export default {
     },
     data() {
         // initialize toggle value
-        let isClosed = this.useToggleLink && this.value.length > this.maxVisibleTags;
+        const isClosed = this.useToggleLink && this.value.length > this.maxVisibleTags;
 
         return {
             tagText: "",
@@ -92,13 +92,13 @@ export default {
         },
         beforeAddingTag($event) {
             if (!this.emitHookEvent("before-adding-tag", $event)) {
-                let { tag, addTag } = $event;
+                const { tag, addTag } = $event;
                 addTag(tag);
             }
         },
         beforeDeletingTag($event) {
             if (!this.emitHookEvent("before-deleting-tag", $event)) {
-                let { tag, deleteTag } = $event;
+                const { tag, deleteTag } = $event;
                 deleteTag(tag);
             }
         },
diff --git a/client/galaxy/scripts/components/WorkflowImport.vue b/client/galaxy/scripts/components/WorkflowImport.vue
index c202ebd5c2b..bd621e881e4 100644
--- a/client/galaxy/scripts/components/WorkflowImport.vue
+++ b/client/galaxy/scripts/components/WorkflowImport.vue
@@ -31,7 +31,7 @@ Vue.use(BootstrapVue);
 
 export default {
     data() {
-        let Galaxy = getGalaxyInstance();
+        const Galaxy = getGalaxyInstance();
         return {
             sourceFile: null,
             sourceURL: null,
@@ -52,7 +52,7 @@ export default {
             if (!this.sourceFile && !this.sourceURL) {
                 this.errorMessage = "You must provide a workflow archive URL or file.";
             } else {
-                let formData = new FormData();
+                const formData = new FormData();
                 formData.append("archive_file", this.sourceFile);
                 formData.append("archive_source", this.sourceURL);
                 axios
@@ -63,7 +63,7 @@ export default {
                         }&status=success`;
                     })
                     .catch(error => {
-                        let message = error.response.data && error.response.data.err_msg;
+                        const message = error.response.data && error.response.data.err_msg;
                         this.errorMessage = message || "Import failed for an unknown reason.";
                     });
             }
diff --git a/client/galaxy/scripts/components/admin/DataManager/DataManagerJobs.vue b/client/galaxy/scripts/components/admin/DataManager/DataManagerJobs.vue
index 87bf41802de..156e3208c0d 100644
--- a/client/galaxy/scripts/components/admin/DataManager/DataManagerJobs.vue
+++ b/client/galaxy/scripts/components/admin/DataManager/DataManagerJobs.vue
@@ -133,7 +133,7 @@ export default {
             ];
         },
         tableFields() {
-            let tableFields = this.fields.slice(0);
+            const tableFields = this.fields.slice(0);
             if (this.showCommandLine) {
                 tableFields.splice(5, 0, {
                     key: "commandLine",
@@ -143,9 +143,9 @@ export default {
             return tableFields;
         },
         tableItems() {
-            let tableItems = this.jobs.slice(0);
+            const tableItems = this.jobs.slice(0);
 
-            for (let item of tableItems) {
+            for (const item of tableItems) {
                 // Nicer time formatting
                 item["updateTime"] = item["updateTime"].replace("T", "\n");
 
diff --git a/client/galaxy/scripts/components/admin/DisplayApplications.vue b/client/galaxy/scripts/components/admin/DisplayApplications.vue
index db9fe8e191f..3f751410fff 100644
--- a/client/galaxy/scripts/components/admin/DisplayApplications.vue
+++ b/client/galaxy/scripts/components/admin/DisplayApplications.vue
@@ -58,15 +58,15 @@ export default {
     },
     computed: {
         applicationsIndex: function() {
-            let result = {};
-            for (let app of this.applications) {
+            const result = {};
+            for (const app of this.applications) {
                 result[app.id] = app;
             }
             return result;
         },
         applicationsAll: function() {
-            let result = [];
-            for (let app of this.applications) {
+            const result = [];
+            for (const app of this.applications) {
                 result.push(app.id);
             }
             return result;
@@ -99,8 +99,8 @@ export default {
             this._reload([id]);
         },
         reloadAll: function() {
-            let ids = [];
-            for (let app of this.applications) {
+            const ids = [];
+            for (const app of this.applications) {
                 ids.push(app.id);
             }
             this._reload(ids);
@@ -119,15 +119,15 @@ export default {
                 });
         },
         _highlightRows: function(appList, status) {
-            for (let appIndex of appList) {
-                let app = this.applicationsIndex[appIndex];
+            for (const appIndex of appList) {
+                const app = this.applicationsIndex[appIndex];
                 if (app) {
                     app._rowVariant = status;
                 }
             }
         },
         _errorMessage: function(e) {
-            let message = e && e.response && e.response.data && e.response.data.err_msg;
+            const message = e && e.response && e.response.data && e.response.data.err_msg;
             this.messageText = message || "Request failed for an unknown reason.";
             this.messageVariant = "danger";
         }
diff --git a/client/galaxy/scripts/components/admin/ErrorStack.vue b/client/galaxy/scripts/components/admin/ErrorStack.vue
index b466213cf70..b83043c7caa 100644
--- a/client/galaxy/scripts/components/admin/ErrorStack.vue
+++ b/client/galaxy/scripts/components/admin/ErrorStack.vue
@@ -40,7 +40,7 @@ export default {
                 this.errorStackLoaded = true;
             })
             .catch(e => {
-                let message = e && e.response && e.response.data && e.response.data.err_msg;
+                const message = e && e.response && e.response.data && e.response.data.err_msg;
                 this.messageText = message || "Request failed for an unknown reason.";
             });
     }
diff --git a/client/galaxy/scripts/components/login/Login.vue b/client/galaxy/scripts/components/login/Login.vue
index 070901bd6a7..860e421a35a 100644
--- a/client/galaxy/scripts/components/login/Login.vue
+++ b/client/galaxy/scripts/components/login/Login.vue
@@ -60,10 +60,10 @@ export default {
         }
     },
     data() {
-        let galaxy = getGalaxyInstance();
-        let oidc_idps = galaxy.config.oidc;
+        const galaxy = getGalaxyInstance();
+        const oidc_idps = galaxy.config.oidc;
         // Icons to use for each IdP
-        let oidc_idps_icons = { google: "fa fa-google" };
+        const oidc_idps_icons = { google: "fa fa-google" };
         // Add default icons to IdPs without icons
         oidc_idps
             .filter(function(key) {
@@ -99,7 +99,7 @@ export default {
             }
         },
         submitGalaxyLogin: function(method) {
-            let rootUrl = getAppRoot();
+            const rootUrl = getAppRoot();
             axios
                 .post(`${rootUrl}user/login`, this.$data)
                 .then(response => {
@@ -116,12 +116,12 @@ export default {
                 })
                 .catch(error => {
                     this.messageVariant = "danger";
-                    let message = error.response.data && error.response.data.err_msg;
+                    const message = error.response.data && error.response.data.err_msg;
                     this.messageText = message || "Login failed for an unknown reason.";
                 });
         },
         submitOIDCLogin: function(idp) {
-            let rootUrl = getAppRoot();
+            const rootUrl = getAppRoot();
             axios
                 .post(`${rootUrl}authnz/${idp}/login`)
                 .then(response => {
@@ -132,12 +132,12 @@ export default {
                 })
                 .catch(error => {
                     this.messageVariant = "danger";
-                    let message = error.response.data && error.response.data.err_msg;
+                    const message = error.response.data && error.response.data.err_msg;
                     this.messageText = message || "Login failed for an unknown reason.";
                 });
         },
         reset: function(ev) {
-            let rootUrl = getAppRoot();
+            const rootUrl = getAppRoot();
             ev.preventDefault();
             axios
                 .post(`${rootUrl}user/reset_password`, { email: this.login })
@@ -147,7 +147,7 @@ export default {
                 })
                 .catch(error => {
                     this.messageVariant = "danger";
-                    let message = error.response.data && error.response.data.err_msg;
+                    const message = error.response.data && error.response.data.err_msg;
                     this.messageText = message || "Password reset failed for an unknown reason.";
                 });
         }
diff --git a/client/galaxy/scripts/components/login/Password.vue b/client/galaxy/scripts/components/login/Password.vue
index 9d25aa38ffd..f50b6a6afb1 100644
--- a/client/galaxy/scripts/components/login/Password.vue
+++ b/client/galaxy/scripts/components/login/Password.vue
@@ -22,7 +22,7 @@ Vue.use(BootstrapVue);
 
 export default {
     data() {
-        let Galaxy = getGalaxyInstance();
+        const Galaxy = getGalaxyInstance();
         return {
             token: Galaxy.params.token,
             user: Galaxy.params.expired_user,
@@ -40,7 +40,7 @@ export default {
     },
     methods: {
         submit: function(ev) {
-            let urlRoot = getAppRoot();
+            const urlRoot = getAppRoot();
             ev.preventDefault();
             axios
                 .post(`${urlRoot}user/change_password`, {
@@ -55,7 +55,7 @@ export default {
                 })
                 .catch(error => {
                     this.messageVariant = "danger";
-                    let message = error.response.data && error.response.data.err_msg;
+                    const message = error.response.data && error.response.data.err_msg;
                     this.messageText = message || "Password change failed for an unknown reason.";
                 });
         }
diff --git a/client/galaxy/scripts/components/login/Register.vue b/client/galaxy/scripts/components/login/Register.vue
index 2009c783a1f..0bb439ac785 100644
--- a/client/galaxy/scripts/components/login/Register.vue
+++ b/client/galaxy/scripts/components/login/Register.vue
@@ -71,7 +71,7 @@ export default {
         }
     },
     data() {
-        let galaxy = getGalaxyInstance();
+        const galaxy = getGalaxyInstance();
         return {
             email: null,
             password: null,
@@ -95,7 +95,7 @@ export default {
             }
         },
         submit: function(method) {
-            let rootUrl = getAppRoot();
+            const rootUrl = getAppRoot();
             axios
                 .post(`${rootUrl}user/create`, this.$data)
                 .then(response => {
@@ -106,7 +106,7 @@ export default {
                 })
                 .catch(error => {
                     this.messageVariant = "danger";
-                    let message = error.response.data && error.response.data.err_msg;
+                    const message = error.response.data && error.response.data.err_msg;
                     this.messageText = message || "Registration failed for an unknown reason.";
                 });
         }