diff --git a/.eslintignore.errorfiles b/.eslintignore.errorfiles
index 6fbb51b0fd..57639aa3a5 100644
--- a/.eslintignore.errorfiles
+++ b/.eslintignore.errorfiles
@@ -140,11 +140,9 @@ src/Resend.js
 src/RichText.js
 src/Roles.js
 src/RoomListSorter.js
-src/RoomNotifs.js
 src/Rooms.js
 src/ScalarAuthClient.js
 src/ScalarMessaging.js
-src/Skinner.js
 src/stores/LifecycleStore.js
 src/TabComplete.js
 src/TabCompleteEntries.js
diff --git a/src/RoomNotifs.js b/src/RoomNotifs.js
index 7cb7d4b9de..88b6e56c7f 100644
--- a/src/RoomNotifs.js
+++ b/src/RoomNotifs.js
@@ -52,7 +52,7 @@ export function getRoomNotifsState(roomId) {
 }
 
 export function setRoomNotifsState(roomId, newState) {
-    if (newState == MUTE) {
+    if (newState === MUTE) {
         return setRoomNotifsStateMuted(roomId);
     } else {
         return setRoomNotifsStateUnmuted(roomId, newState);
@@ -80,11 +80,11 @@ function setRoomNotifsStateMuted(roomId) {
                 kind: 'event_match',
                 key: 'room_id',
                 pattern: roomId,
-            }
+            },
         ],
         actions: [
             'dont_notify',
-        ]
+        ],
     }));
 
     return q.all(promises);
@@ -99,16 +99,16 @@ function setRoomNotifsStateUnmuted(roomId, newState) {
         promises.push(cli.deletePushRule('global', 'override', overrideMuteRule.rule_id));
     }
 
-    if (newState == 'all_messages') {
+    if (newState === 'all_messages') {
         const roomRule = cli.getRoomPushRule('global', roomId);
         if (roomRule) {
             promises.push(cli.deletePushRule('global', 'room', roomRule.rule_id));
         }
-    } else if (newState == 'mentions_only') {
+    } else if (newState === 'mentions_only') {
         promises.push(cli.addPushRule('global', 'room', roomId, {
             actions: [
                 'dont_notify',
-            ]
+            ],
         }));
         // https://matrix.org/jira/browse/SPEC-400
         promises.push(cli.setPushRuleEnabled('global', 'room', roomId, true));
@@ -119,8 +119,8 @@ function setRoomNotifsStateUnmuted(roomId, newState) {
                 {
                     set_tweak: 'sound',
                     value: 'default',
-                }
-            ]
+                },
+            ],
         }));
         // https://matrix.org/jira/browse/SPEC-400
         promises.push(cli.setPushRuleEnabled('global', 'room', roomId, true));
@@ -145,20 +145,10 @@ function isRuleForRoom(roomId, rule) {
         return false;
     }
     const cond = rule.conditions[0];
-    if (
-        cond.kind == 'event_match' &&
-        cond.key == 'room_id' &&
-        cond.pattern == roomId
-    ) {
-        return true;
-    }
-    return false;
+    return (cond.kind === 'event_match' && cond.key === 'room_id' && cond.pattern === roomId);
 }
 
 function isMuteRule(rule) {
-    return (
-        rule.actions.length == 1 &&
-        rule.actions[0] == 'dont_notify'
-    );
+    return (rule.actions.length === 1 && rule.actions[0] === 'dont_notify');
 }
 
diff --git a/src/Skinner.js b/src/Skinner.js
index 0688c9fc26..f47572ba01 100644
--- a/src/Skinner.js
+++ b/src/Skinner.js
@@ -51,19 +51,18 @@ class Skinner {
         if (this.components !== null) {
             throw new Error(
                 "Attempted to load a skin while a skin is already loaded"+
-                "If you want to change the active skin, call resetSkin first"
-            );
+                "If you want to change the active skin, call resetSkin first");
         }
         this.components = {};
-        var compKeys = Object.keys(skinObject.components);
-        for (var i = 0; i < compKeys.length; ++i) {
-            var comp = skinObject.components[compKeys[i]];
+        const compKeys = Object.keys(skinObject.components);
+        for (let i = 0; i < compKeys.length; ++i) {
+            const comp = skinObject.components[compKeys[i]];
             this.addComponent(compKeys[i], comp);
         }
     }
 
     addComponent(name, comp) {
-        var slot = name;
+        let slot = name;
         if (comp.replaces !== undefined) {
             if (comp.replaces.indexOf('.') > -1) {
                 slot = comp.replaces;