diff --git a/.eslintignore b/.eslintignore
new file mode 100644
index 000000000..f3e3f7b08
--- /dev/null
+++ b/.eslintignore
@@ -0,0 +1,2 @@
+javascripts/lib/*.js
+javascripts/DragDropTouch.js
\ No newline at end of file
diff --git a/javascripts/components/options/select-theme.js b/javascripts/components/options/select-theme.js
index d317add8c..6c8739e74 100644
--- a/javascripts/components/options/select-theme.js
+++ b/javascripts/components/options/select-theme.js
@@ -1,3 +1,5 @@
+"use strict";
+
 Vue.component("select-theme", {
   data() {
     return {
diff --git a/javascripts/core/devtools.js b/javascripts/core/devtools.js
index 31432ccc3..6c220ff23 100644
--- a/javascripts/core/devtools.js
+++ b/javascripts/core/devtools.js
@@ -84,7 +84,7 @@ dev.fixSave = function() {
   
     var fixed = save.replace(/NaN/gi, "10")
     var stillToDo = JSON.parse(fixed)
-    for (var i=0; i<stillToDo.autobuyers.length; i++) stillToDo.autobuyers[i].isOn = false
+    for (let i=0; i<stillToDo.autobuyers.length; i++) stillToDo.autobuyers[i].isOn = false
     console.log(stillToDo)
     
     var save_data = stillToDo
@@ -431,11 +431,11 @@ dev.updateTestSave = function() {
 
   if (player.options.testVersion === 24) {
     // following logic from autobuyers (before the addition of wall clock time stats)
-    var speedup = getGameSpeedupFactor([GameSpeedEffect.EC12, GameSpeedEffect.WORMHOLE]);
+    let speedup = getGameSpeedupFactor([GameSpeedEffect.EC12, GameSpeedEffect.WORMHOLE]);
     player.thisInfinityRealTime = Time.thisInfinity.totalSeconds / speedup;
     player.thisEternityRealTime = Time.thisEternity.totalSeconds / speedup;
     player.thisRealityRealTime = Time.thisReality.totalSeconds / speedup;
-    for (var i=0; i<10; i++) {
+    for (let i=0; i<10; i++) {
       player.lastTenRuns[i][2] = undefined;
       player.lastTenEternities[i][2] = undefined;
       player.lastTenRealities[i][3] = undefined;
diff --git a/javascripts/core/load_functions.js b/javascripts/core/load_functions.js
index 0b9bd8128..9dcf4c93b 100644
--- a/javascripts/core/load_functions.js
+++ b/javascripts/core/load_functions.js
@@ -54,7 +54,7 @@ function onLoad() {
   }
 
   if (player.version === undefined) { // value will need to be adjusted when update goes live
-      for (var i = 0; i < player.autobuyers.length; i++) {
+      for (let i = 0; i < player.autobuyers.length; i++) {
           if (player.autobuyers[i]%1 !== 0) player.infinityPoints = player.infinityPoints + player.autobuyers[i].cost - 1
       }
       player.autobuyers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
diff --git a/javascripts/core/polyfill.js b/javascripts/core/polyfill.js
index 2086b0ed3..2711acf9e 100644
--- a/javascripts/core/polyfill.js
+++ b/javascripts/core/polyfill.js
@@ -2,7 +2,6 @@
 
 if (!String.prototype.includes) {
   String.prototype.includes = function(search, start) {
-    'use strict';
     if (typeof start !== 'number') {
       start = 0;
     }