diff --git a/spec/helpers/helper.js b/spec/helpers/helper.js
index 8832fd4937..84d04a73b7 100644
--- a/spec/helpers/helper.js
+++ b/spec/helpers/helper.js
@@ -1,6 +1,3 @@
-/* eslint-disable no-undef */
-/* eslint-disable no-unused-vars */
-
 const KEYMAP = {
   '27': 'Escape',
   '32': 'Space',
@@ -121,6 +118,7 @@ const KEYMAP = {
   '105': '9'
 };
 
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
 function XloadHtml(html, options) {
   options = options ? options : {};
   const defaultOptions = { insertionType: 'append' };
@@ -128,11 +126,9 @@ function XloadHtml(html, options) {
     ...defaultOptions,
     ...options
   };
-
   const div = document.createElement('div');
   div.classList.add('please-delete-me');
   div.innerHTML = html;
-
   if (options.insertionType === 'append') {
     document.body.appendChild(div);
   } else if (options.insertionType === 'prepend') {
@@ -140,9 +136,9 @@ function XloadHtml(html, options) {
   }
 }
 
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
 function XunloadFixtures() {
   document.querySelectorAll('.please-delete-me').forEach((el) => el.remove());
-  //
   document.querySelectorAll('.material-tooltip').forEach((el) => el.remove());
   document.querySelectorAll('.dropdown-content').forEach((el) => el.remove());
 }
@@ -152,7 +148,7 @@ beforeEach(() => {
     toExist: (util, customEqualityTesters) => {
       return {
         compare: (actual) => {
-          let result = {};
+          const result = {};
           result.pass = util.equals(!!actual, true, customEqualityTesters);
           return result;
         }
@@ -190,7 +186,7 @@ beforeEach(() => {
       return {
         compare: (actual) => {
           const style = getComputedStyle(actual);
-          let result = {};
+          const result = {};
           result.pass = util.equals(
             style.getPropertyValue('display'),
             'none',
@@ -204,7 +200,7 @@ beforeEach(() => {
       return {
         compare: (actual) => {
           const style = getComputedStyle(actual);
-          let result = {};
+          const result = {};
           result.pass = !util.equals(
             style.getPropertyValue('display'),
             'none',
@@ -224,7 +220,7 @@ beforeEach(() => {
     toHaveClass: (util, customEqualityTesters) => {
       return {
         compare: (actual, expected) => {
-          let result = {};
+          const result = {};
           result.pass = util.equals(
             actual.classList.contains(expected),
             true,
@@ -237,7 +233,7 @@ beforeEach(() => {
     toNotHaveClass: (util, customEqualityTesters) => {
       return {
         compare: function (actual, expected) {
-          let result = {};
+          const result = {};
           result.pass = util.equals(
             actual.classList.contains(expected),
             false,
diff --git a/spec/tests/autocomplete/autocompleteSpec.js b/spec/tests/autocomplete/autocompleteSpec.js
index cf8a57147d..7ad08978f7 100644
--- a/spec/tests/autocomplete/autocompleteSpec.js
+++ b/spec/tests/autocomplete/autocompleteSpec.js
@@ -96,7 +96,7 @@ describe('Autocomplete Plugin', () => {
       }
       const limitedInstance = M.Autocomplete.getInstance(limited);
       const limit = 20;
-      limitedInstance.options.onSearch = (text) => {
+      limitedInstance.options.onSearch = () => {
         const filteredItems = data.slice(0, limit);
         limitedInstance.setMenuItems(filteredItems);
       };
@@ -114,8 +114,8 @@ describe('Autocomplete Plugin', () => {
     });
 
     it('should open correctly from typing', (done) => {
-      let normal = document.querySelector('#normal-autocomplete');
-      let autocompleteEl = normal.parentNode.querySelector('.autocomplete-content');
+      const normal = document.querySelector('#normal-autocomplete');
+      const autocompleteEl = normal.parentNode.querySelector('.autocomplete-content');
       focus(normal);
       normal.value = 'e';
       keyup(normal, 69);
@@ -129,8 +129,8 @@ describe('Autocomplete Plugin', () => {
     });
 
     it('should open correctly from keyboard focus', (done) => {
-      let normal = document.querySelector('#normal-autocomplete');
-      let autocompleteEl = normal.parentNode.querySelector('.autocomplete-content');
+      const normal = document.querySelector('#normal-autocomplete');
+      const autocompleteEl = normal.parentNode.querySelector('.autocomplete-content');
       normal.value = 'e';
       keyup(normal, 9);
       focus(normal);
diff --git a/spec/tests/cards/cardsSpec.js b/spec/tests/cards/cardsSpec.js
index 138f395ede..3072a52b71 100644
--- a/spec/tests/cards/cardsSpec.js
+++ b/spec/tests/cards/cardsSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 describe('Cards', () => {
   const fixture = `<div class="row">
   <div class="col s12 m6">
@@ -150,13 +148,13 @@ describe('Cards', () => {
     });
 
     it('should have small card dimensions', () => {
-      let cardImage = small.querySelector('.card-image');
-      let cardContent = small.querySelector('.card-content');
-      let cardAction = small.querySelector('.card-action');
-      let smallRect = small.getBoundingClientRect();
-      let cardImageRect = cardImage.getBoundingClientRect();
-      let cardContentRect = cardContent.getBoundingClientRect();
-      let cardActionRect = cardAction.getBoundingClientRect();
+      const cardImage = small.querySelector('.card-image');
+      const cardContent = small.querySelector('.card-content');
+      const cardAction = small.querySelector('.card-action');
+      const smallRect = small.getBoundingClientRect();
+      const cardImageRect = cardImage.getBoundingClientRect();
+      const cardContentRect = cardContent.getBoundingClientRect();
+      const cardActionRect = cardAction.getBoundingClientRect();
 
       expect(smallRect.height).toEqual(300, 'small card should be 300px high');
       expect(cardImageRect.height).toBeLessThan(181, 'small image should be <= 180px or 60% high');
@@ -171,13 +169,13 @@ describe('Cards', () => {
     });
 
     it('should have medium card dimensions', () => {
-      let cardImage = medium.querySelector('.card-image');
-      let cardContent = medium.querySelector('.card-content');
-      let cardAction = medium.querySelector('.card-action');
-      let mediumRect = medium.getBoundingClientRect();
-      let cardImageRect = cardImage.getBoundingClientRect();
-      let cardContentRect = cardContent.getBoundingClientRect();
-      let cardActionRect = cardAction.getBoundingClientRect();
+      const cardImage = medium.querySelector('.card-image');
+      const cardContent = medium.querySelector('.card-content');
+      const cardAction = medium.querySelector('.card-action');
+      const mediumRect = medium.getBoundingClientRect();
+      const cardImageRect = cardImage.getBoundingClientRect();
+      const cardContentRect = cardContent.getBoundingClientRect();
+      const cardActionRect = cardAction.getBoundingClientRect();
 
       expect(mediumRect.height).toEqual(400, 'medium card should be 400px high');
       expect(cardImageRect.height).toBeLessThan(241, 'medium image should be <= 240 or 60% high');
@@ -192,13 +190,13 @@ describe('Cards', () => {
     });
 
     it('should have large card dimensions', () => {
-      let cardImage = large.querySelector('.card-image');
-      let cardContent = large.querySelector('.card-content');
-      let cardAction = large.querySelector('.card-action');
-      let largeRect = large.getBoundingClientRect();
-      let cardImageRect = cardImage.getBoundingClientRect();
-      let cardContentRect = cardContent.getBoundingClientRect();
-      let cardActionRect = cardAction.getBoundingClientRect();
+      const cardImage = large.querySelector('.card-image');
+      const cardContent = large.querySelector('.card-content');
+      const cardAction = large.querySelector('.card-action');
+      const largeRect = large.getBoundingClientRect();
+      const cardImageRect = cardImage.getBoundingClientRect();
+      const cardContentRect = cardContent.getBoundingClientRect();
+      const cardActionRect = cardAction.getBoundingClientRect();
 
       expect(largeRect.height).toEqual(500, 'large card should be 500px high');
       expect(cardImageRect.height).toBeLessThan(301, 'large image should be <= 300 or 60% high');
diff --git a/spec/tests/carousel/carouselSpec.js b/spec/tests/carousel/carouselSpec.js
index 4e87226dfd..933036d025 100644
--- a/spec/tests/carousel/carouselSpec.js
+++ b/spec/tests/carousel/carouselSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 describe('Carousel', () => {
   const fixture = `<div class="carousel carousel-slider" id="slider-no-wrap">
   <div class="carousel-item">
@@ -52,10 +50,12 @@ describe('Carousel', () => {
 
       document.querySelectorAll('.indicator-item')[1].click();
       setTimeout(() => {
-        expect(carousel.center).toEqual(1, 'carousel item was not visible after indicator interaction');
+        expect(carousel.center).toEqual(
+          1,
+          'carousel item was not visible after indicator interaction'
+        );
         done();
       }, 30);
     });
-
   });
 });
diff --git a/spec/tests/chips/chipsSpec.js b/spec/tests/chips/chipsSpec.js
index 1b65ddc647..d4a0cd6980 100644
--- a/spec/tests/chips/chipsSpec.js
+++ b/spec/tests/chips/chipsSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 describe('Chips', () => {
   const fixture = `<div class="chips"></div>
 <div class="chips chips-initial"></div>
@@ -66,7 +64,7 @@ describe('Chips', () => {
       M.Chips.init(chips);
       M.Chips.init(chips);
       chipsUserInput = document.querySelector('.chips.input-field');
-      M.Chips.init(chips, {allowUserInput: true});
+      M.Chips.init(chips, { allowUserInput: true });
       input = chipsUserInput.querySelectorAll('input');
       expect(input.length).toEqual(1, 'Should dynamically generate chips structure.');
     });
@@ -77,8 +75,8 @@ describe('Chips', () => {
       input.value = 'one';
       keydown(input, 13);
       setTimeout(() => {
-        let numChips = chips.querySelectorAll('.chip').length;
-        let oneChip = chips.querySelector('.chip');
+        const numChips = chips.querySelectorAll('.chip').length;
+        const oneChip = chips.querySelector('.chip');
         expect(numChips).toEqual(1, 'one chip should have been added');
         for (let i = oneChip.children.length - 1; i >= 0; i--) {
           oneChip.children[i].remove();
@@ -92,7 +90,7 @@ describe('Chips', () => {
       chips = document.querySelector('.chips.chips-initial.input-field');
       let numChips = chips.querySelectorAll('.chip').length;
       expect(numChips).toEqual(3, '3 initial chips should have been added');
-      let chipCloseButton = chips.querySelectorAll('.chip .close');
+      const chipCloseButton = chips.querySelectorAll('.chip .close');
       expect(chipCloseButton.length).toEqual(3, 'expected all chips to have close button');
       click(chipCloseButton[0]);
       setTimeout(() => {
diff --git a/spec/tests/collapsible/collapsibleSpec.js b/spec/tests/collapsible/collapsibleSpec.js
index d8b28906a9..bc2e26d01b 100644
--- a/spec/tests/collapsible/collapsibleSpec.js
+++ b/spec/tests/collapsible/collapsibleSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 describe('Collapsible Plugin:', () => {
   let collapsible, accordion, popout, expandable, expandablePreselect;
 
@@ -80,8 +78,8 @@ describe('Collapsible Plugin:', () => {
   describe('collapsible', () => {
     it('should open all items, keeping all open', (done) => {
       // Collapsible body height should be 0 on start when hidden.
-      let headers = expandable.querySelectorAll('.collapsible-header');
-      let bodies = expandable.querySelectorAll('.collapsible-body');
+      const headers = expandable.querySelectorAll('.collapsible-header');
+      const bodies = expandable.querySelectorAll('.collapsible-body');
       for (let i = 0; i < bodies.length; i++) {
         expect(bodies[i]).hasMaxHeightZero(
           'because collapsible bodies should be hidden initially.'
@@ -103,9 +101,9 @@ describe('Collapsible Plugin:', () => {
     });
 
     it('should allow preopened sections', () => {
-      let bodies = expandablePreselect.querySelectorAll('.collapsible-body');
+      const bodies = expandablePreselect.querySelectorAll('.collapsible-body');
       for (let i = 0; i < bodies.length; i++) {
-        let headerLi = bodies[i].parentNode;
+        const headerLi = bodies[i].parentNode;
         if (i === 1) {
           expect(headerLi).toHaveClass(
             'active',
@@ -136,7 +134,7 @@ describe('Collapsible Plugin:', () => {
         inDuration: 0,
         outDuration: 0
       });
-      let bodies = expandable.querySelectorAll('.collapsible-body');
+      const bodies = expandable.querySelectorAll('.collapsible-body');
       expect(openCallback).toEqual(false, 'because open callback not yet fired');
       expect(closeCallback).toEqual(false, 'because close callback not yet fired');
       for (let i = 0; i < bodies.length; i++) {
@@ -144,7 +142,7 @@ describe('Collapsible Plugin:', () => {
         expect(bodies[i]).hasMaxHeightZero(
           'because collapsible bodies should be hidden initially.'
         );
-        let collapsibleInstance = M.Collapsible.getInstance(bodies[i].parentNode.parentNode);
+        const collapsibleInstance = M.Collapsible.getInstance(bodies[i].parentNode.parentNode);
         collapsibleInstance.open(i);
       }
       expect(openCallback).toEqual(true, 'because open callback fired');
@@ -171,10 +169,10 @@ describe('Collapsible Plugin:', () => {
   describe('accordion', () => {
     it('should open first and second items, keeping only second open', (done) => {
       // Collapsible body height should be 0 on start when hidden.
-      let firstHeader = accordion.querySelector('.collapsible-header');
-      let firstBody = accordion.querySelector('.collapsible-body');
-      let secondHeader = accordion.querySelectorAll('.collapsible-header')[1];
-      let secondBody = accordion.querySelectorAll('.collapsible-body')[1];
+      const firstHeader = accordion.querySelector('.collapsible-header');
+      const firstBody = accordion.querySelector('.collapsible-body');
+      const secondHeader = accordion.querySelectorAll('.collapsible-header')[1];
+      const secondBody = accordion.querySelectorAll('.collapsible-body')[1];
       expect(firstBody).hasMaxHeightZero('because accordion bodies should be hidden initially.');
       expect(secondBody).hasMaxHeightZero('because accordion bodies should be hidden initially.');
       // Collapsible body height should be > 0 after being opened.
@@ -200,15 +198,15 @@ describe('Collapsible Plugin:', () => {
   describe('popout', () => {
     it('should open first and popout', (done) => {
       // Collapsible body height should be 0 on start when hidden.
-      let listItems = popout.querySelectorAll('li');
-      let firstHeader = popout.querySelector('.collapsible-header');
-      let firstBody = popout.querySelector('.collapsible-body');
+      const listItems = popout.querySelectorAll('li');
+      const firstHeader = popout.querySelector('.collapsible-header');
+      const firstBody = popout.querySelector('.collapsible-body');
       expect(firstBody).hasMaxHeightZero('because accordion bodies should be hidden initially.');
       // Expect margin to be > 0 because not popped out.
       for (let i = 0; i < listItems.length; i++) {
-        let listItemStyles = getComputedStyle(listItems[i]);
-        let marginLeft = parseInt(listItemStyles.getPropertyValue('margin-left'));
-        let marginRight = parseInt(listItemStyles.getPropertyValue('margin-right'));
+        const listItemStyles = getComputedStyle(listItems[i]);
+        const marginLeft = parseInt(listItemStyles.getPropertyValue('margin-left'));
+        const marginRight = parseInt(listItemStyles.getPropertyValue('margin-right'));
         expect(marginLeft).toBeGreaterThan(
           0,
           'because closed popout items should have horizontal margins.'
diff --git a/spec/tests/datepicker/datepickerSpec.js b/spec/tests/datepicker/datepickerSpec.js
index 815319ace8..4f2491dbf6 100644
--- a/spec/tests/datepicker/datepickerSpec.js
+++ b/spec/tests/datepicker/datepickerSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 describe('Datepicker Plugin', () => {
   const fixture = `<div class="row">
   <div class="input-field col s12">
diff --git a/spec/tests/dropdown/dropdownSpec.js b/spec/tests/dropdown/dropdownSpec.js
index bda6543f5c..f50defa6cb 100644
--- a/spec/tests/dropdown/dropdownSpec.js
+++ b/spec/tests/dropdown/dropdownSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 describe('Dropdown Plugin:', () => {
   const fixture = `<div class="row">
     <div class="input-field col s12">
diff --git a/spec/tests/fab/fabSpec.js b/spec/tests/fab/fabSpec.js
index ce626aa7c6..2338d32632 100644
--- a/spec/tests/fab/fabSpec.js
+++ b/spec/tests/fab/fabSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 describe('Fab Plugin:', () => {
   const fixture = `<div class="fixed-action-btn">
   <a class="btn-floating btn-large red">
diff --git a/spec/tests/forms/formsSpec.js b/spec/tests/forms/formsSpec.js
index 990a86d600..0329cec516 100644
--- a/spec/tests/forms/formsSpec.js
+++ b/spec/tests/forms/formsSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 const MULTILINE_TEXT =
   'This is line 1.\nThis is line 2.\nThis is line 3.\nThis is line 4.\nThis is line 5.\nAnd this is line 6.';
 
diff --git a/spec/tests/materialbox/materialboxSpec.js b/spec/tests/materialbox/materialboxSpec.js
index 5f05b25543..3c544d14ed 100644
--- a/spec/tests/materialbox/materialboxSpec.js
+++ b/spec/tests/materialbox/materialboxSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 describe('Materialbox:', () => {
   const fixture = `<div id="transformTest" style="transform: translate3d(1px,1px,1px)">
   <img
diff --git a/spec/tests/select/selectSpec.js b/spec/tests/select/selectSpec.js
index 1e64fc671d..c1c2306174 100644
--- a/spec/tests/select/selectSpec.js
+++ b/spec/tests/select/selectSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 describe('Select Plugin:', () => {
   const fixture = `<div class="row">
   <div class="input-field col s12">
@@ -304,8 +302,8 @@ describe('Select Plugin:', () => {
     it('Option groups should behave as such for assistive technologies', () => {
       optInput = selectInstance.wrapper.querySelector('input.select-dropdown');
       optDropdown = selectInstance.wrapper.querySelector('ul.select-dropdown');
-      let optgroups = optDropdown.querySelectorAll('li.optgroup');
-      let browerSelectOptgroups = browserSelect.querySelectorAll('optgroup');
+      const optgroups = optDropdown.querySelectorAll('li.optgroup');
+      const browerSelectOptgroups = browserSelect.querySelectorAll('optgroup');
       for (let i = 0; i < optgroups.length; i++) {
         expect(optgroups[i].getAttribute('role')).toBe('group', 'Should behave as group.');
       }
@@ -320,8 +318,8 @@ describe('Select Plugin:', () => {
     it('should open dropdown and select options', (done) => {
       optInput = selectInstance.wrapper.querySelector('input.select-dropdown');
       optDropdown = selectInstance.wrapper.querySelector('ul.select-dropdown');
-      let optgroups = optDropdown.querySelectorAll('li.optgroup');
-      let browerSelectOptgroups = browserSelect.querySelectorAll('optgroup');
+      const optgroups = optDropdown.querySelectorAll('li.optgroup');
+      const browerSelectOptgroups = browserSelect.querySelectorAll('optgroup');
       for (let i = 0; i < browerSelectOptgroups.length; i++) {
         expect(browerSelectOptgroups[i].label).toEqual(
           optgroups[i].innerText,
@@ -335,7 +333,7 @@ describe('Select Plugin:', () => {
       click(optInput);
       setTimeout(() => {
         expect(optDropdown).toBeVisible('Should be visible after opening.');
-        let secondOption = optDropdown.querySelectorAll('li:not(.disabled):not(.optgroup)')[1];
+        const secondOption = optDropdown.querySelectorAll('li:not(.disabled):not(.optgroup)')[1];
         click(secondOption);
         blur(optInput);
         setTimeout(() => {
@@ -362,9 +360,9 @@ describe('Select Plugin:', () => {
     it('should not do anything when optgroup li clicked', function (done) {
       optInput = selectInstance.wrapper.querySelector('input.select-dropdown');
       optDropdown = selectInstance.wrapper.querySelector('ul.select-dropdown');
-      let originalVal = optInput.value;
-      let optgroups = optDropdown.querySelectorAll('li.optgroup');
-      let browerSelectOptgroups = browserSelect.querySelectorAll('optgroup');
+      const originalVal = optInput.value;
+      const optgroups = optDropdown.querySelectorAll('li.optgroup');
+      const browerSelectOptgroups = browserSelect.querySelectorAll('optgroup');
       for (let i = 0; i < browerSelectOptgroups.length; i++) {
         expect(browerSelectOptgroups[i].label).toEqual(
           optgroups[i].innerText,
@@ -378,7 +376,7 @@ describe('Select Plugin:', () => {
       click(optInput);
       setTimeout(() => {
         expect(optDropdown).toBeVisible('Should be visible after opening.');
-        let optgroup = optDropdown.querySelector('li.optgroup');
+        const optgroup = optDropdown.querySelector('li.optgroup');
         click(optgroup);
         blur(optInput);
         setTimeout(() => {
diff --git a/spec/tests/sidenav/sidenavSpec.js b/spec/tests/sidenav/sidenavSpec.js
index 5ccd226436..4c1d8ed19d 100644
--- a/spec/tests/sidenav/sidenavSpec.js
+++ b/spec/tests/sidenav/sidenavSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 describe('Sidenav Plugin', () => {
   const fixture = `<ul id="slide-out" class="sidenav">
   <li><div class="user-view">
@@ -37,9 +35,9 @@ describe('Sidenav Plugin', () => {
         1,
         'only 1 sidenav initialized after multiple calls on the same element'
       );
-      let dragTarget = document.querySelectorAll('.drag-target');
+      const dragTarget = document.querySelectorAll('.drag-target');
       expect(dragTarget.length).toEqual(1, 'Should generate only one dragTarget.');
-      let overlay = document.querySelectorAll('.sidenav-overlay');
+      const overlay = document.querySelectorAll('.sidenav-overlay');
       expect(overlay.length).toEqual(1, 'Should generate only one overlay.');
     });
 
@@ -74,7 +72,7 @@ describe('Sidenav Plugin', () => {
       let openEnd = false;
       let closeStart = false;
       let closeEnd = false;
-      let sidenav = M.Sidenav.init(document.querySelector('#slide-out'), {
+      const sidenav = M.Sidenav.init(document.querySelector('#slide-out'), {
         inDuration: 0,
         outDuration: 0,
         onOpenStart: () => {
@@ -90,7 +88,7 @@ describe('Sidenav Plugin', () => {
           closeEnd = true;
         }
       });
-      let overlay = sidenav._overlay;
+      const overlay = sidenav._overlay;
       click(normalActivator);
       expect(openStart).toEqual(true, 'Open start should fire immediately after open');
       expect(openEnd).toEqual(false, 'Open end should not fire immediately after open');
@@ -108,9 +106,9 @@ describe('Sidenav Plugin', () => {
 
     it('should destroy correctly', function (done) {
       expect(M.Sidenav._sidenavs.length).toEqual(0, 'no sidenavs initialized');
-      let sidenav = M.Sidenav.init(document.querySelector('#slide-out'));
-      let overlay = sidenav._overlay;
-      let dragTarget = sidenav.dragTarget;
+      const sidenav = M.Sidenav.init(document.querySelector('#slide-out'));
+      const overlay = sidenav._overlay;
+      const dragTarget = sidenav.dragTarget;
       expect(M.Sidenav._sidenavs.length).toEqual(1, 'one sidenav initialized');
       expect(document.contains(overlay)).toEqual(true, 'overlay should be in DOM');
       expect(document.contains(dragTarget)).toEqual(true, 'dragTarget should be in DOM');
diff --git a/spec/tests/slider/sliderSpec.js b/spec/tests/slider/sliderSpec.js
index 51a9996f13..c926c4d8be 100644
--- a/spec/tests/slider/sliderSpec.js
+++ b/spec/tests/slider/sliderSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 describe('Slider Plugin:', () => {
   const fixture = `<div class="slider simple-slider">
   <ul class="slides">
diff --git a/spec/tests/tabs/tabsSpec.js b/spec/tests/tabs/tabsSpec.js
index 5e864a6788..93427b6a80 100644
--- a/spec/tests/tabs/tabsSpec.js
+++ b/spec/tests/tabs/tabsSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 describe('Tabs Plugin', () => {
   const fixture = `<div class="row">
   <div class="col s12">
@@ -37,11 +35,11 @@ describe('Tabs Plugin', () => {
   describe('Tabs', () => {
     it('should open to active tab', () => {
       const normalTabs = document.querySelector('.tabs.normal');
-      let activeTab = normalTabs.querySelector('.active');
-      let activeTabHash = activeTab.getAttribute('href');
-      let tabLinks = normalTabs.querySelectorAll('.tab a');
+      const activeTab = normalTabs.querySelector('.active');
+      const activeTabHash = activeTab.getAttribute('href');
+      const tabLinks = normalTabs.querySelectorAll('.tab a');
       for (let i = 0; i < tabLinks.length; i++) {
-        let tabHash = tabLinks[i].getAttribute('href');
+        const tabHash = tabLinks[i].getAttribute('href');
         if (tabHash === activeTabHash) {
           expect(document.querySelector(tabHash)).toBeVisible(
             'active tab content should be visible by default'
@@ -52,20 +50,20 @@ describe('Tabs Plugin', () => {
           ); //TODO replace with alternative for deprecated jasmine-jquery
         }
       }
-      let indicator = normalTabs.querySelector('.indicator');
+      const indicator = normalTabs.querySelector('.indicator');
       expect(indicator).toExist('Indicator should be generated');
       // expect(Math.abs(indicator.offset().left - activeTab.offset().left)).toBeLessThan(1, 'Indicator should be at active tab by default.');
     });
 
     it('should switch to clicked tab', (done) => {
       const normalTabs = document.querySelector('.tabs.normal');
-      let activeTab = normalTabs.querySelector('.active');
-      let activeTabHash = activeTab.getAttribute('href');
-      let disabledTab = normalTabs.querySelector('.disabled a');
-      let disabledTabHash = disabledTab.getAttribute('href');
-      let firstTab = normalTabs.querySelector('.tab a');
-      let firstTabHash = firstTab.getAttribute('href');
-      let indicator = normalTabs.querySelector('.indicator');
+      const activeTab = normalTabs.querySelector('.active');
+      const activeTabHash = activeTab.getAttribute('href');
+      const disabledTab = normalTabs.querySelector('.disabled a');
+      const disabledTabHash = disabledTab.getAttribute('href');
+      const firstTab = normalTabs.querySelector('.tab a');
+      const firstTabHash = firstTab.getAttribute('href');
+      const indicator = normalTabs.querySelector('.indicator');
       expect(indicator).toExist('Indicator should be generated');
       // expect(Math.abs(indicator.offset().left - activeTab.offset().left)).toBeLessThan(1, 'Indicator should be at active tab by default.');
       click(disabledTab);
@@ -97,9 +95,9 @@ describe('Tabs Plugin', () => {
 
     it("shouldn't hide active tab if clicked while active", (done) => {
       const normalTabs = document.querySelector('.tabs.normal');
-      let activeTab = normalTabs.querySelector('.active');
-      let activeTabHash = activeTab.getAttribute('href');
-      let indicator = normalTabs.querySelector('.indicator');
+      const activeTab = normalTabs.querySelector('.active');
+      const activeTabHash = activeTab.getAttribute('href');
+      const indicator = normalTabs.querySelector('.indicator');
       expect(indicator).toExist('Indicator should be generated');
       click(activeTab);
       setTimeout(() => {
@@ -114,7 +112,7 @@ describe('Tabs Plugin', () => {
       let tabsScrollWidth = 0;
       const normalTabs = document.querySelector('.tabs.normal');
       normalTabs.style.width = '400px';
-      let tabs = normalTabs.querySelectorAll('.tab');
+      const tabs = normalTabs.querySelectorAll('.tab');
       for (let i = 0; i < tabs.length; i++) {
         setTimeout(() => {
           tabsScrollWidth += tabs[i].offsetWidth;
@@ -132,14 +130,14 @@ describe('Tabs Plugin', () => {
 
     it('should programmatically switch tabs', (done) => {
       const normalTabs = document.querySelector('.tabs.normal');
-      let activeTab = normalTabs.querySelector('.active');
-      let activeTabHash = activeTab.getAttribute('href');
-      let firstTab = normalTabs.querySelector('li a');
-      let firstTabHash = firstTab.getAttribute('href');
-      let indicator = normalTabs.querySelector('.indicator');
-      let tabs = normalTabs.querySelectorAll('.tab a');
+      const activeTab = normalTabs.querySelector('.active');
+      const activeTabHash = activeTab.getAttribute('href');
+      const firstTab = normalTabs.querySelector('li a');
+      const firstTabHash = firstTab.getAttribute('href');
+      const indicator = normalTabs.querySelector('.indicator');
+      const tabs = normalTabs.querySelectorAll('.tab a');
       for (let i = 0; i < tabs.length; i++) {
-        let tabHash = tabs[i].getAttribute('href');
+        const tabHash = tabs[i].getAttribute('href');
         if (tabHash === activeTabHash) {
           expect(document.querySelector(tabHash)).toBeVisible(
             'active tab content should be visible by default'
@@ -170,7 +168,7 @@ describe('Tabs Plugin', () => {
 
     it("shouldn't error if tab has no associated content", (done) => {
       document.querySelector('#test8').remove();
-      let tabNoContent = document.querySelector('[href="#test8"]');
+      const tabNoContent = document.querySelector('[href="#test8"]');
       expect(tabNoContent).toNotHaveClass('active', 'Tab should not be selected');
       click(tabNoContent);
       setTimeout(() => {
diff --git a/spec/tests/taptarget/taptargetSpec.js b/spec/tests/taptarget/taptargetSpec.js
index 9e0dbd5c77..e40ebf26b8 100644
--- a/spec/tests/taptarget/taptargetSpec.js
+++ b/spec/tests/taptarget/taptargetSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 describe('TapTarget', () => {
   const fixture = `<div class="tap-target-container">
   <a id="tap-target-link" class="waves-effect waves-light btn btn-floating toggle-tap-target"><i class="material-icons">menu</i></a>
@@ -26,7 +24,10 @@ describe('TapTarget', () => {
     it('should be able to initialize', (done) => {
       expect(M.TapTarget._taptargets.length).toEqual(0, 'no tap targets initialized');
       M.TapTarget.init(document.querySelectorAll('.tap-target'));
-      expect(M.TapTarget._taptargets.length).toEqual(1, 'there should be 1 tap target initialization');
+      expect(M.TapTarget._taptargets.length).toEqual(
+        1,
+        'there should be 1 tap target initialization'
+      );
       done();
     });
 
@@ -73,7 +74,7 @@ describe('TapTarget', () => {
         },
         onClose: () => {
           closed = true;
-        },
+        }
       });
       click(toggleTapTargetElem);
       expect(opened).toEqual(true, 'opened variable should be true after method callback');
@@ -84,11 +85,14 @@ describe('TapTarget', () => {
       done();
     });
 
-    it('should destroy correctly', function(done) {
+    it('should destroy correctly', function (done) {
       const tapTargetElem = document.querySelector('.tap-target');
       expect(M.TapTarget._taptargets.length).toEqual(0, 'no tap targets initialized');
       M.TapTarget.init(tapTargetElem);
-      expect(M.TapTarget._taptargets.length).toEqual(1, 'there should be 1 tap target initialization');
+      expect(M.TapTarget._taptargets.length).toEqual(
+        1,
+        'there should be 1 tap target initialization'
+      );
       M.TapTarget.getInstance(tapTargetElem).destroy();
       setTimeout(() => {
         expect(M.TapTarget._taptargets.length).toEqual(0, 'no tap targets initialized');
diff --git a/spec/tests/toast/toastSpec.js b/spec/tests/toast/toastSpec.js
index 943eaa8b81..a2a183a873 100644
--- a/spec/tests/toast/toastSpec.js
+++ b/spec/tests/toast/toastSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 describe('Toasts:', () => {
   describe('Toast javascript functions', () => {
     it('should display and remove a toast', (done) => {
@@ -51,7 +49,7 @@ describe('Toasts:', () => {
     it('Toasts should call the callback function when dismissed', (done) => {
       let wasCalled = false;
       const callback = () => (wasCalled = true);
-      const toast = new M.Toast({
+      new M.Toast({
         text: 'I am a toast',
         inDuration: 10,
         displayLength: 50,
@@ -65,7 +63,7 @@ describe('Toasts:', () => {
     });
 
     it('should apply classes to toast', (done) => {
-      const toast = new M.Toast({
+      new M.Toast({
         text: 'Hi',
         displayLength: 100,
         inDuration: 10,
diff --git a/spec/tests/tooltip/tooltipSpec.js b/spec/tests/tooltip/tooltipSpec.js
index 2ad2ed9637..5ed2697fde 100644
--- a/spec/tests/tooltip/tooltipSpec.js
+++ b/spec/tests/tooltip/tooltipSpec.js
@@ -1,5 +1,3 @@
-/* eslint-disable no-undef */
-
 describe('Tooltip:', () => {
   const fixture = `<a
   id="test"
@@ -71,8 +69,8 @@ describe('Tooltip:', () => {
       mouseenter(tooltippedBtn);
       // tooltippedBtn.trigger('mouseenter');
       setTimeout(() => {
-        let tooltipRect = tooltip.getBoundingClientRect();
-        let tooltippedBtnRect = tooltippedBtn.getBoundingClientRect();
+        const tooltipRect = tooltip.getBoundingClientRect();
+        const tooltippedBtnRect = tooltippedBtn.getBoundingClientRect();
         // Check window bounds
         expect(tooltipRect.top).toBeGreaterThanOrEqual(0);
         expect(tooltipRect.bottom).toBeLessThanOrEqual(window.innerHeight);