diff --git a/package.json b/package.json
index a5f4e42ffd..b03174886c 100644
--- a/package.json
+++ b/package.json
@@ -72,7 +72,7 @@
     "npm": "^6"
   },
   "scripts": {
-    "lint": "eslint --ext .js --fix ./website/server",
+    "lint": "eslint --ext .js --fix .",
     "test": "npm run lint && gulp test && gulp apidoc",
     "test:build": "gulp test:prepare:build",
     "test:api-v3": "gulp test:api-v3",
diff --git a/website/client/package-lock.json b/website/client/package-lock.json
index 8c36980e3a..224b05b199 100644
--- a/website/client/package-lock.json
+++ b/website/client/package-lock.json
@@ -6253,6 +6253,12 @@
       "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
       "dev": true
     },
+    "ini": {
+      "version": "1.3.5",
+      "resolved": "https://registry.npmjs.org/ini/-/ini-1.3.5.tgz",
+      "integrity": "sha512-RZY5huIKCMRWDUqZlEi72f/lmXKMvuszcMBduliQ3nnWbx9X/ZBQO7DijMEYS9EhHBb2qacRUMtC7svLwe0lcw==",
+      "dev": true
+    },
     "inquirer": {
       "version": "6.5.2",
       "resolved": "https://registry.npmjs.org/inquirer/-/inquirer-6.5.2.tgz",
@@ -7868,6 +7874,127 @@
       "integrity": "sha1-Sr6/7tdUHywnrPspvbvRXI1bpPc=",
       "dev": true
     },
+    "nconf": {
+      "version": "0.10.0",
+      "resolved": "https://registry.npmjs.org/nconf/-/nconf-0.10.0.tgz",
+      "integrity": "sha512-fKiXMQrpP7CYWJQzKkPPx9hPgmq+YLDyxcG9N8RpiE9FoCkCbzD0NyW0YhE3xn3Aupe7nnDeIx4PFzYehpHT9Q==",
+      "dev": true,
+      "requires": {
+        "async": "^1.4.0",
+        "ini": "^1.3.0",
+        "secure-keys": "^1.0.0",
+        "yargs": "^3.19.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+          "dev": true
+        },
+        "camelcase": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-2.1.1.tgz",
+          "integrity": "sha1-fB0W1nmhu+WcoCys7PsBHiAfWh8=",
+          "dev": true
+        },
+        "cliui": {
+          "version": "3.2.0",
+          "resolved": "https://registry.npmjs.org/cliui/-/cliui-3.2.0.tgz",
+          "integrity": "sha1-EgYBU3qRbSmUD5NNo7SNWFo5IT0=",
+          "dev": true,
+          "requires": {
+            "string-width": "^1.0.1",
+            "strip-ansi": "^3.0.1",
+            "wrap-ansi": "^2.0.0"
+          }
+        },
+        "invert-kv": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/invert-kv/-/invert-kv-1.0.0.tgz",
+          "integrity": "sha1-EEqOSqym09jNFXqO+L+rLXo//bY=",
+          "dev": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
+          "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
+          "dev": true,
+          "requires": {
+            "number-is-nan": "^1.0.0"
+          }
+        },
+        "lcid": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/lcid/-/lcid-1.0.0.tgz",
+          "integrity": "sha1-MIrMr6C8SDo4Z7S28rlQYlHRuDU=",
+          "dev": true,
+          "requires": {
+            "invert-kv": "^1.0.0"
+          }
+        },
+        "os-locale": {
+          "version": "1.4.0",
+          "resolved": "https://registry.npmjs.org/os-locale/-/os-locale-1.4.0.tgz",
+          "integrity": "sha1-IPnxeuKe00XoveWDsT0gCYA8FNk=",
+          "dev": true,
+          "requires": {
+            "lcid": "^1.0.0"
+          }
+        },
+        "string-width": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
+          "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+          "dev": true,
+          "requires": {
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^2.0.0"
+          }
+        },
+        "wrap-ansi": {
+          "version": "2.1.0",
+          "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
+          "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
+          "dev": true,
+          "requires": {
+            "string-width": "^1.0.1",
+            "strip-ansi": "^3.0.1"
+          }
+        },
+        "y18n": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz",
+          "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE=",
+          "dev": true
+        },
+        "yargs": {
+          "version": "3.32.0",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.32.0.tgz",
+          "integrity": "sha1-AwiOnr+edWtpdRYR0qXvWRSCyZU=",
+          "dev": true,
+          "requires": {
+            "camelcase": "^2.0.1",
+            "cliui": "^3.0.3",
+            "decamelize": "^1.1.1",
+            "os-locale": "^1.4.0",
+            "string-width": "^1.0.1",
+            "window-size": "^0.1.4",
+            "y18n": "^3.2.0"
+          }
+        }
+      }
+    },
     "negotiator": {
       "version": "0.6.2",
       "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.2.tgz",
@@ -9857,6 +9984,12 @@
         "ajv-keywords": "^3.1.0"
       }
     },
+    "secure-keys": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/secure-keys/-/secure-keys-1.0.0.tgz",
+      "integrity": "sha1-8MgtmKOxOah3aogIBQuCRDEIf8o=",
+      "dev": true
+    },
     "select-hose": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/select-hose/-/select-hose-2.0.0.tgz",
@@ -12050,6 +12183,12 @@
         "string-width": "^1.0.2 || 2"
       }
     },
+    "window-size": {
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/window-size/-/window-size-0.1.4.tgz",
+      "integrity": "sha1-+OGqHuWlPsW/FR/6CXQqatdpeHY=",
+      "dev": true
+    },
     "wordwrap": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
diff --git a/website/client/package.json b/website/client/package.json
index 24f2353c0c..86e1537f45 100644
--- a/website/client/package.json
+++ b/website/client/package.json
@@ -6,7 +6,7 @@
     "serve": "vue-cli-service serve",
     "build": "vue-cli-service build",
     "test:unit": "vue-cli-service test:unit --opts ../../test/mocha.opts",
-    "lint": "vue-cli-service lint"
+    "lint": "vue-cli-service lint --quiet"
   },
   "dependencies": {
     "amplitude-js": "^5.3.1",
@@ -42,7 +42,7 @@
     "eslint": "^5.16.0",
     "eslint-plugin-vue": "^5.0.0",
     "inspectpack": "^4.2.2",
-    "pug": "^2.0.4",
+    "nconf": "^0.10.0",
     "sass": "^1.19.0",
     "sass-loader": "^8.0.0",
     "svg-inline-loader": "^0.8.0",
diff --git a/website/client/src/components/achievements/achievementFooter.vue b/website/client/src/components/achievements/achievementFooter.vue
index 85d8056b06..bf4a3a2580 100644
--- a/website/client/src/components/achievements/achievementFooter.vue
+++ b/website/client/src/components/achievements/achievementFooter.vue
@@ -29,7 +29,8 @@
             ></div>
             {{ $t('share') }}
           </a>
-          <!-- @TODO: Still want this? .col-4a.tumblr-share-button(:data-href='socialLevelLink', data-notes='none')-->
+          <!-- @TODO: Still want this?
+            .col-4a.tumblr-share-button(:data-href='socialLevelLink', data-notes='none')-->
         </div>
       </div>
     </div>
diff --git a/website/client/src/components/achievements/chooseClass.vue b/website/client/src/components/achievements/chooseClass.vue
index 6746d9cc86..51edd54f34 100644
--- a/website/client/src/components/achievements/chooseClass.vue
+++ b/website/client/src/components/achievements/chooseClass.vue
@@ -16,6 +16,7 @@
         <div class="row">
           <div
             v-for="heroClass in classes"
+            :key="heroClass"
             class="col-md-3"
           >
             <div @click="selectedClass = heroClass">
@@ -36,6 +37,7 @@
         <br>
         <div
           v-for="heroClass in classes"
+          :key="heroClass"
           class="d-flex justify-content-center"
         >
           <div
@@ -56,7 +58,10 @@
             </div>
           </div>
         </div>
-        <div v-for="heroClass in classes">
+        <div
+          v-for="heroClass in classes"
+          :key="heroClass"
+        >
           <div
             v-if="selectedClass === heroClass"
             class="class-explanation text-center"
diff --git a/website/client/src/components/achievements/levelUp.vue b/website/client/src/components/achievements/levelUp.vue
index 8d993ce246..aacaac9205 100644
--- a/website/client/src/components/achievements/levelUp.vue
+++ b/website/client/src/components/achievements/levelUp.vue
@@ -53,7 +53,8 @@ label(style='display:inline-block') {{ $t('dontShowAgain') }}
             {{ $t('share') }}
           </a>
         </div>
-        <!-- @TODO: Still want this? .col-4a.tumblr-share-button(:data-href='socialLevelLink', data-notes='none')-->
+        <!-- @TODO: Still want this? .col-4a.tumblr
+          -share-button(:data-href='socialLevelLink', data-notes='none')-->
       </div>
     </div>
   </b-modal>
diff --git a/website/client/src/components/achievements/login-incentives.vue b/website/client/src/components/achievements/login-incentives.vue
index 55abe71903..89bfa7da60 100644
--- a/website/client/src/components/achievements/login-incentives.vue
+++ b/website/client/src/components/achievements/login-incentives.vue
@@ -35,12 +35,15 @@
               v-if="nextReward.rewardKey.length === 1"
               :class="nextReward.rewardKey[0]"
             ></div>
+            <!-- eslint-disable vue/no-use-v-if-with-v-for -->
             <div
               v-for="reward in nextReward.rewardKey"
               v-if="nextReward.rewardKey.length > 1"
+              :key="reward"
               class="reward"
               :class="reward"
             ></div>
+            <!-- eslint-enable vue/no-use-v-if-with-v-for -->
           </div>
           <div
             v-if="data.rewardText"
@@ -50,12 +53,15 @@
               v-if="data.rewardKey.length === 1"
               :class="data.rewardKey[0]"
             ></div>
+            <!-- eslint-disable vue/no-use-v-if-with-v-for -->
             <div
               v-for="reward in data.rewardKey"
               v-if="data.rewardKey.length > 1"
+              :key="reward"
               class="reward"
               :class="reward"
             ></div>
+            <!-- eslint-enable vue/no-use-v-if-with-v-for -->
           </div>
         </div>
         <div
@@ -79,7 +85,10 @@
           v-if="data && data.nextRewardAt"
           class="col-12 text-center"
         >
-          <h3>{{ $t('nextRewardUnlocksIn', {numberOfCheckinsLeft: data.nextRewardAt - user.loginIncentives}) }}</h3>
+          <h3>
+            {{ $t('nextRewardUnlocksIn', {
+              numberOfCheckinsLeft: data.nextRewardAt - user.loginIncentives}) }}
+          </h3>
         </div>
       </div>
     </div>
diff --git a/website/client/src/components/achievements/questInvitation.vue b/website/client/src/components/achievements/questInvitation.vue
index 20185d2a6a..b48f62a071 100644
--- a/website/client/src/components/achievements/questInvitation.vue
+++ b/website/client/src/components/achievements/questInvitation.vue
@@ -29,7 +29,7 @@
         <div ng-if="quests[user.party.quest.key].collect">
           <p ng-repeat="(k,v) in quests[user.party.quest.key].collect">
             <strong>{{ $t('collect') }} + ': '</strong>
-            {{ quests[user.party.quest.key].collect[k].count }} {{ quests[user.party.quest.key].collect[k].text() }}
+            {{ quests[user.party.quest.key].collect[k].count }} {{ quests[user.party.quest.key].collect[k].text() }} <!-- eslint-disable-line max-len -->
           </p>
         </div>
       </div>
diff --git a/website/client/src/components/achievements/rebirth.vue b/website/client/src/components/achievements/rebirth.vue
index b68f9be475..174b5cd4c3 100644
--- a/website/client/src/components/achievements/rebirth.vue
+++ b/website/client/src/components/achievements/rebirth.vue
@@ -10,7 +10,9 @@
         <!-- @TODO: +achievementAvatar('sun',0)--><achievement-avatar class="avatar" />
       </div><div class="col-6 offset-3 text-center">
         <div v-if="user.achievements.rebirthLevel < 100">
-          {{ $t('rebirthAchievement', {number: user.achievements.rebirths, level: user.achievements.rebirthLevel}) }}
+          {{ $t('rebirthAchievement', {
+            number: user.achievements.rebirths,
+            level: user.achievements.rebirthLevel}) }}
         </div><div v-if="user.achievements.rebirthLevel >= 100">
           {{ $t('rebirthAchievement100', {number: user.achievements.rebirths}) }}
         </div><br><button
diff --git a/website/client/src/components/achievements/ultimateGear.vue b/website/client/src/components/achievements/ultimateGear.vue
index 8a6fdc0d11..9572db7560 100644
--- a/website/client/src/components/achievements/ultimateGear.vue
+++ b/website/client/src/components/achievements/ultimateGear.vue
@@ -47,7 +47,10 @@
         </table>
         <br>
         <div
-          v-if="!(user.achievements.ultimateGearSets.healer && user.achievements.ultimateGearSets.wizard && user.achievements.ultimateGearSets.rogue && user.achievements.ultimateGearSets.warrior)"
+          v-if="!user.achievements.ultimateGearSets.healer
+            && user.achievements.ultimateGearSets.wizard
+            && user.achievements.ultimateGearSets.rogue
+            && user.achievements.ultimateGearSets.warrior"
         >
           <p v-html="$t('moreGearAchievements')"></p>
           <br>
diff --git a/website/client/src/components/auth/authForm.vue b/website/client/src/components/auth/authForm.vue
index effdc5e5c9..7d3fa83e7d 100644
--- a/website/client/src/components/auth/authForm.vue
+++ b/website/client/src/components/auth/authForm.vue
@@ -10,7 +10,9 @@
             class="svg-icon social-icon"
             v-html="icons.facebookIcon"
           ></div>
-          <span>{{ registering ? $t('signUpWithSocial', {social: 'Facebook'}) : $t('loginWithSocial', {social: 'Facebook'}) }}</span>
+          <span>{{ registering
+            ? $t('signUpWithSocial', {social: 'Facebook'})
+            : $t('loginWithSocial', {social: 'Facebook'}) }}</span>
         </div>
       </div>
       <div class="col-12 col-md-6">
@@ -22,7 +24,9 @@
             class="svg-icon social-icon"
             v-html="icons.googleIcon"
           ></div>
-          <span>{{ registering ? $t('signUpWithSocial', {social: 'Google'}) : $t('loginWithSocial', {social: 'Google'}) }}</span>
+          <span>{{ registering
+            ? $t('signUpWithSocial', {social: 'Google'})
+            : $t('loginWithSocial', {social: 'Google'}) }}</span>
         </div>
       </div>
     </div>
diff --git a/website/client/src/components/auth/registerLoginReset.vue b/website/client/src/components/auth/registerLoginReset.vue
index 09ae91752b..e76d1a902d 100644
--- a/website/client/src/components/auth/registerLoginReset.vue
+++ b/website/client/src/components/auth/registerLoginReset.vue
@@ -33,7 +33,9 @@
             <div
               class="text"
             >
-              {{ registering ? $t('signUpWithSocial', {social: 'Facebook'}) : $t('loginWithSocial', {social: 'Facebook'}) }}
+              {{ registering
+                ? $t('signUpWithSocial', {social: 'Facebook'})
+                : $t('loginWithSocial', {social: 'Facebook'}) }}
             </div>
           </div>
         </div>
@@ -49,7 +51,9 @@
             <div
               class="text"
             >
-              {{ registering ? $t('signUpWithSocial', {social: 'Google'}) : $t('loginWithSocial', {social: 'Google'}) }}
+              {{ registering
+                ? $t('signUpWithSocial', {social: 'Google'})
+                : $t('loginWithSocial', {social: 'Google'}) }}
             </div>
           </div>
         </div>
@@ -72,6 +76,7 @@
         >
         <div
           v-for="issue in usernameIssues"
+          :key="issue"
           class="input-error"
         >
           {{ issue }}
diff --git a/website/client/src/components/avatarModal/customize-options.vue b/website/client/src/components/avatarModal/customize-options.vue
index 86a6263298..6cb26f574d 100644
--- a/website/client/src/components/avatarModal/customize-options.vue
+++ b/website/client/src/components/avatarModal/customize-options.vue
@@ -7,7 +7,12 @@
       v-for="option in items"
       :key="option.key"
       class="outer-option-background"
-      :class="{locked: option.gemLocked || option.goldLocked, premium: Boolean(option.gem), active: option.active || currentValue === option.key, none: option.none, hide: option.hide }"
+      :class="{
+        locked: option.gemLocked || option.goldLocked,
+        premium: Boolean(option.gem),
+        active: option.active || currentValue === option.key,
+        none: option.none,
+        hide: option.hide }"
       @click="option.click(option)"
     >
       <div class="option">
diff --git a/website/client/src/components/avatarModal/hair-settings.vue b/website/client/src/components/avatarModal/hair-settings.vue
index 9ff721946c..2342aa1afc 100644
--- a/website/client/src/components/avatarModal/hair-settings.vue
+++ b/website/client/src/components/avatarModal/hair-settings.vue
@@ -17,10 +17,13 @@
         :items="freeHairColors"
         :current-value="user.preferences.hair.color"
       />
+      <!-- eslint-disable vue/no-use-v-if-with-v-for -->
       <div
         v-for="set in seasonalHairColors"
         v-if="editing && set.key !== 'undefined'"
+        :key="set.key"
       >
+        <!-- eslint-enable vue/no-use-v-if-with-v-for -->
         <customize-options
           :items="set.options"
           :current-value="user.preferences.skin"
@@ -33,6 +36,7 @@
       v-if="activeSubPage === 'style'"
       id="style"
     >
+      <!-- eslint-disable vue/require-v-for-key NO KEY AVAILABLE HERE -->
       <div v-for="set in styleSets">
         <customize-options
           :items="set.options"
@@ -40,6 +44,7 @@
           @unlock="set.unlock()"
         />
       </div>
+      <!-- eslint-enable vue/require-v-for-key -->
     </div>
     <div
       v-if="activeSubPage === 'bangs'"
@@ -58,12 +63,14 @@
         v-if="editing"
         :items="mustacheList"
       />
+      <!-- eslint-disable max-len -->
       <customize-options
         v-if="editing"
         :items="beardList"
         :full-set="isPurchaseAllNeeded('hair', ['baseHair5', 'baseHair6'], ['mustache', 'beard'])"
         @unlock="unlock(`hair.mustache.${baseHair5Keys.join(',hair.mustache.')},hair.beard.${baseHair6Keys.join(',hair.beard.')}`)"
       />
+      <!-- eslint-enable max-len -->
     </div>
   </div>
 </template>
diff --git a/website/client/src/components/avatarModal/skin-settings.vue b/website/client/src/components/avatarModal/skin-settings.vue
index be2a1f2386..f946359a2a 100644
--- a/website/client/src/components/avatarModal/skin-settings.vue
+++ b/website/client/src/components/avatarModal/skin-settings.vue
@@ -13,10 +13,13 @@
       :items="freeSkins"
       :current-value="user.preferences.skin"
     />
+    <!-- eslint-disable vue/no-use-v-if-with-v-for -->
     <div
       v-for="set in seasonalSkins"
       v-if="editing && set.key !== 'undefined'"
+      :key="set.key"
     >
+      <!-- eslint-enable vue/no-use-v-if-with-v-for -->
       <customize-options
         :items="set.options"
         :current-value="user.preferences.skin"
diff --git a/website/client/src/components/categories/categoryTags.vue b/website/client/src/components/categories/categoryTags.vue
index 4925ee5f18..f49bc7985e 100644
--- a/website/client/src/components/categories/categoryTags.vue
+++ b/website/client/src/components/categories/categoryTags.vue
@@ -10,6 +10,7 @@
     >{{ $t('joined') }}</span>
     <span
       v-for="category in categories"
+      :key="category.slug"
       class="category-label"
       :class="{'category-label-purple':isOfficial(category)}"
     >{{ $t(category.name) }}</span>
diff --git a/website/client/src/components/challenges/challengeDetail.vue b/website/client/src/components/challenges/challengeDetail.vue
index 7a2be62060..4467e1b322 100644
--- a/website/client/src/components/challenges/challengeDetail.vue
+++ b/website/client/src/components/challenges/challengeDetail.vue
@@ -30,8 +30,10 @@
                 :group="challenge.group"
               />
             </span>
-            <!-- @TODO: make challenge.author a variable inside the createdBy string (helps with RTL languages)-->
-            <!-- @TODO: Implement in V2 strong.margin-left(v-once).svg-icon.calendar-icon(v-html="icons.calendarIcon")
+            <!-- @TODO: make challenge.author a variable inside the
+             createdBy string (helps with RTL languages)-->
+            <!-- @TODO: Implement in V2 strong.margin-left
+            (v-once).svg-icon.calendar-icon(v-html="icons.calendarIcon")
 | {{$t('endDate')}}
             // "endDate": "End Date: <% endDate %>",-->
             <!-- span {{challenge.endDate}}-->
@@ -39,6 +41,7 @@
           <div class="tags">
             <span
               v-for="tag in challenge.tags"
+              :key="tag"
               class="tag"
             >{{ tag }}</span>
           </div>
@@ -112,6 +115,7 @@
         </div>
       </div>
       <div class="row">
+        <!-- eslint-disable vue/no-use-v-if-with-v-for -->
         <task-column
           v-for="column in columns"
           v-if="tasksByType[column].length > 0"
@@ -123,6 +127,7 @@
           @editTask="editTask"
           @taskDestroyed="taskDestroyed"
         />
+        <!-- eslint-enable vue/no-use-v-if-with-v-for -->
       </div>
     </div>
     <div class="col-12 col-md-4 sidebar standard-page">
diff --git a/website/client/src/components/challenges/challengeItem.vue b/website/client/src/components/challenges/challengeItem.vue
index ac1887e11e..d289fd6aff 100644
--- a/website/client/src/components/challenges/challengeItem.vue
+++ b/website/client/src/components/challenges/challengeItem.vue
@@ -78,6 +78,7 @@
       <div class="well">
         <div
           v-for="task in tasksData"
+          :key="task.label"
           :class="{'muted': task.value === 0}"
         >
           <div class="number">
@@ -413,7 +414,8 @@ export default {
       return this.user.challenges.indexOf(this.challenge._id) !== -1;
     },
     isOfficial () {
-      return this.challenge.official || this.challenge.categories.map(category => category.slug).includes('habitica_official');
+      return this.challenge.official
+        || this.challenge.categories.map(category => category.slug).includes('habitica_official');
     },
     tasksData () {
       return [
diff --git a/website/client/src/components/challenges/challengeModal.vue b/website/client/src/components/challenges/challengeModal.vue
index b64ca02f38..7e1fe7b0fe 100644
--- a/website/client/src/components/challenges/challengeModal.vue
+++ b/website/client/src/components/challenges/challengeModal.vue
@@ -68,6 +68,7 @@
         >
           <option
             v-for="group in groups"
+            :key="group._id"
             :value="group._id"
           >
             {{ group.name }}
@@ -91,6 +92,7 @@
           >{{ $t('none') }}</span>
           <div
             v-for="category in workingChallenge.categories"
+            :key="category"
             class="category-label"
           >
             {{ $t(categoriesHashByKey[category]) }}
@@ -100,12 +102,14 @@
           v-if="showCategorySelect && creating"
           class="category-box"
         >
+          <!-- eslint-disable vue/no-use-v-if-with-v-for -->
           <div
             v-for="group in categoryOptions"
             v-if="group.key !== 'habitica_official' || user.contributor.admin"
             :key="group.key"
             class="form-check"
           >
+            <!-- eslint-enable vue/no-use-v-if-with-v-for -->
             <div class="custom-control custom-checkbox">
               <input
                 :id="`challenge-modal-cat-${group.key}`"
diff --git a/website/client/src/components/challenges/findChallenges.vue b/website/client/src/components/challenges/findChallenges.vue
index be7d3d8cbf..b75bd6f427 100644
--- a/website/client/src/components/challenges/findChallenges.vue
+++ b/website/client/src/components/challenges/findChallenges.vue
@@ -13,8 +13,10 @@
           </h1>
         </div>
         <div class="col-md-4">
-          <!-- @TODO: implement sorting span.dropdown-label {{ $t('sortBy') }}b-dropdown(:text="$t('sort')", right=true)
-          b-dropdown-item(v-for='sortOption in sortOptions', :key="sortOption.value", @click='sort(sortOption.value)') {{sortOption.text}}-->
+          <!-- @TODO: implement sorting span.dropdown-label
+           {{ $t('sortBy') }}b-dropdown(:text="$t('sort')", right=true)
+          b-dropdown-item(v-for='sortOption in sortOptions',
+           :key="sortOption.value", @click='sort(sortOption.value)') {{sortOption.text}}-->
           <button
             class="btn btn-secondary create-challenge-button float-right"
             @click="createChallenge()"
@@ -40,6 +42,7 @@
       <div class="row">
         <div
           v-for="challenge in filteredChallenges"
+          :key="challenge._id"
           class="col-12 col-md-6"
         >
           <challenge-item :challenge="challenge" />
diff --git a/website/client/src/components/challenges/myChallenges.vue b/website/client/src/components/challenges/myChallenges.vue
index 9b000772df..be85ea90e5 100644
--- a/website/client/src/components/challenges/myChallenges.vue
+++ b/website/client/src/components/challenges/myChallenges.vue
@@ -13,8 +13,10 @@
           </h1>
         </div>
         <div class="col-md-4">
-          <!-- @TODO: implement sorting span.dropdown-label {{ $t('sortBy') }}b-dropdown(:text="$t('sort')", right=true)
-          b-dropdown-item(v-for='sortOption in sortOptions', :key="sortOption.value", @click='sort(sortOption.value)') {{sortOption.text}}-->
+          <!-- @TODO: implement sorting span.dropdown-label
+           {{ $t('sortBy') }}b-dropdown(:text="$t('sort')", right=true)
+          b-dropdown-item(v-for='sortOption in sortOptions',
+           :key="sortOption.value", @click='sort(sortOption.value)') {{sortOption.text}}-->
           <button
             class="btn btn-secondary create-challenge-button float-right"
             @click="createChallenge()"
@@ -60,6 +62,7 @@
       <div class="row">
         <div
           v-for="challenge in filteredChallenges"
+          :key="challenge._id"
           class="col-12 col-md-6"
         >
           <challenge-item :challenge="challenge" />
diff --git a/website/client/src/components/chat/autoComplete.vue b/website/client/src/components/chat/autoComplete.vue
index 4baf8592bd..575e49e99d 100644
--- a/website/client/src/components/chat/autoComplete.vue
+++ b/website/client/src/components/chat/autoComplete.vue
@@ -6,6 +6,7 @@
   >
     <div
       v-for="result in searchResults"
+      :key="result.username"
       class="autocomplete-results d-flex align-items-center"
       :class="{'hover-background': result.hover}"
       @click="select(result)"
@@ -134,7 +135,11 @@ export default {
       this.currentSearch = this.currentSearch.substring(1, this.currentSearch.length); // eslint-disable-line vue/no-side-effects-in-computed-properties, max-len
 
       return this.tmpSelections
-        .filter(option => option.displayName.toLowerCase().indexOf(this.currentSearch.toLowerCase()) !== -1 || option.username && option.username.toLowerCase().indexOf(this.currentSearch.toLowerCase()) !== -1)
+        .filter(option => { // eslint-disable-line arrow-body-style
+          return option.displayName.toLowerCase().indexOf(this.currentSearch.toLowerCase()) !== -1
+            || (option.username
+              && option.username.toLowerCase().indexOf(this.currentSearch.toLowerCase()) !== -1);
+        })
         .slice(0, 4);
     },
 
diff --git a/website/client/src/components/chat/chatCard.vue b/website/client/src/components/chat/chatCard.vue
index dd581a6ac4..9824f97d2e 100644
--- a/website/client/src/components/chat/chatCard.vue
+++ b/website/client/src/components/chat/chatCard.vue
@@ -61,7 +61,8 @@
           <div>{{ $t('copyAsTodo') }}</div>
         </div>
         <div
-          v-if="(inbox || (user.flags.communityGuidelinesAccepted && msg.uuid !== 'system')) && (!isMessageReported || user.contributor.admin)"
+          v-if="(inbox || (user.flags.communityGuidelinesAccepted && msg.uuid !== 'system'))
+            && (!isMessageReported || user.contributor.admin)"
           class="action d-flex align-items-center"
           @click="report(msg)"
         >
@@ -273,7 +274,10 @@ export default {
       const messageText = message.text.toLowerCase();
       const displayName = user.profile.name;
       const username = user.auth.local && user.auth.local.username;
-      const mentioned = max([messageText.indexOf(username.toLowerCase()), messageText.indexOf(displayName.toLowerCase())]);
+      const mentioned = max([
+        messageText.indexOf(username.toLowerCase()),
+        messageText.indexOf(displayName.toLowerCase()),
+      ]);
       if (mentioned === -1) return message.highlight;
 
       const escapedDisplayName = escapeRegExp(displayName);
diff --git a/website/client/src/components/chat/chatMessages.vue b/website/client/src/components/chat/chatMessages.vue
index 737b6cf57c..050c03623c 100644
--- a/website/client/src/components/chat/chatMessages.vue
+++ b/website/client/src/components/chat/chatMessages.vue
@@ -30,18 +30,22 @@
         {{ $t('loading') }}
       </h2>
     </div>
+    <!-- eslint-disable vue/no-use-v-if-with-v-for -->
     <div
-      v-for="(msg, index) in messages"
+      v-for="msg in messages"
       v-if="chat && canViewFlag(msg)"
+      :key="msg.id"
       :class="{row: inbox}"
     >
+      <!-- eslint-enable vue/no-use-v-if-with-v-for -->
       <div
         v-if="user._id !== msg.uuid"
         class="d-flex"
         :class="{'flex-grow-1': inbox}"
       >
         <avatar
-          v-if="msg.userStyles || (cachedProfileData[msg.uuid] && !cachedProfileData[msg.uuid].rejected)"
+          v-if="msg.userStyles
+            || (cachedProfileData[msg.uuid] && !cachedProfileData[msg.uuid].rejected)"
           class="avatar-left"
           :member="msg.userStyles || cachedProfileData[msg.uuid]"
           :avatar-only="true"
@@ -85,7 +89,8 @@
           />
         </div>
         <avatar
-          v-if="msg.userStyles || (cachedProfileData[msg.uuid] && !cachedProfileData[msg.uuid].rejected)"
+          v-if="msg.userStyles
+            || (cachedProfileData[msg.uuid] && !cachedProfileData[msg.uuid].rejected)"
           :member="msg.userStyles || cachedProfileData[msg.uuid]"
           :avatar-only="true"
           :hide-class-badge="true"
diff --git a/website/client/src/components/group-plans/billing.vue b/website/client/src/components/group-plans/billing.vue
index 54a3354e53..99f50c7a6a 100644
--- a/website/client/src/components/group-plans/billing.vue
+++ b/website/client/src/components/group-plans/billing.vue
@@ -33,7 +33,7 @@
             <span class="glyphicon glyphicon-forward"></span>
             {{ $t('consecutiveSubscription') }}
             <ul class="list-unstyled">
-              <li>{{ $t('consecutiveMonths') }} {{ group.purchased.plan.consecutive.count + group.purchased.plan.consecutive.offset }}</li>
+              <li>{{ $t('consecutiveMonths') }} {{ group.purchased.plan.consecutive.count + group.purchased.plan.consecutive.offset }}</li> <!-- eslint-disable-line max-len -->
               <li>{{ $t('gemCapExtra') }} {{ group.purchased.plan.consecutive.gemCapExtra }}</li>
               <li>{{ $t('mysticHourglasses') }} {{ group.purchased.plan.consecutive.trinkets }}</li>
             </ul>
@@ -50,7 +50,8 @@
         {{ $t('upgrade') }}
       </button>
       <div
-        v-if="!group.purchased.plan.dateTerminated && group.purchased.plan.paymentMethod === 'Stripe'"
+        v-if="!group.purchased.plan.dateTerminated
+          && group.purchased.plan.paymentMethod === 'Stripe'"
         class="btn btn-primary"
         @click="showStripeEdit({groupId: group.id})"
       >
diff --git a/website/client/src/components/groups/discovery.vue b/website/client/src/components/groups/discovery.vue
index a9034700e8..0fad05347d 100644
--- a/website/client/src/components/groups/discovery.vue
+++ b/website/client/src/components/groups/discovery.vue
@@ -15,9 +15,11 @@
           </h1>
         </div>
         <div class="col-4">
-          <!-- @TODO: Add when we implement recent activity .float-rightspan.dropdown-label {{ $t('sortBy') }}
+          <!-- @TODO: Add when we implement recent activity
+           .float-rightspan.dropdown-label {{ $t('sortBy') }}
 b-dropdown(:text="$t('sort')", right=true)
-          b-dropdown-item(v-for='sortOption in sortOptions', :key="sortOption.value", @click='sort(sortOption.value)') {{sortOption.text}}-->
+          b-dropdown-item(v-for='sortOption in sortOptions',
+           :key="sortOption.value", @click='sort(sortOption.value)') {{sortOption.text}}-->
           <button
             class="btn btn-secondary create-group-button float-right"
             @click="createGroup()"
@@ -51,7 +53,7 @@ b-dropdown(:text="$t('sort')", right=true)
           <mugen-scroll
             v-show="loading"
             :handler="fetchGuilds"
-            :should-handle="!loading && !this.hasLoadedAllGuilds"
+            :should-handle="!loading && !hasLoadedAllGuilds"
             :handle-on-mount="true"
           >
             <span v-once>{{ $t('loading') }}</span>
diff --git a/website/client/src/components/groups/group.vue b/website/client/src/components/groups/group.vue
index 63fecd0dfb..c978859e25 100644
--- a/website/client/src/components/groups/group.vue
+++ b/website/client/src/components/groups/group.vue
@@ -4,9 +4,9 @@
     class="row"
   >
     <group-form-modal v-if="isParty" />
-    <start-quest-modal :group="this.group" />
-    <quest-details-modal :group="this.group" />
-    <participant-list-modal :group="this.group" />
+    <start-quest-modal :group="group" />
+    <quest-details-modal :group="group" />
+    <participant-list-modal :group="group" />
     <group-gems-modal />
     <div class="col-12 col-sm-8 standard-page">
       <div class="row">
@@ -141,13 +141,22 @@
             >
               {{ $t('invite') }}
             </button>
-            <!-- @TODO: hide the invitation button if there's an active group plan and the player is not the leader-->
+            <!-- @TODO: hide the invitation button
+              if there's an active group plan and the player is not the leader-->
           </div>
           <div class="button-container">
-            <!-- @TODO: V2 button.btn.btn-primary(v-once, v-if='!isLeader') {{$t('messageGuildLeader')}} // Suggest making the button visible to the leader too - useful for them to test how the feature works or to send a note to themself. -- Alys-->
+            <!-- @TODO: V2 button.btn.btn-primary(v-once, v-if='!isLeader')
+             {{$t('messageGuildLeader')}} // Suggest making the button
+              visible to the leader too - useful for them to test how
+               the feature works or to send a note to themself. -- Alys-->
           </div>
           <div class="button-container">
-            <!-- @TODO: V2 button.btn.btn-primary(v-once, v-if='isMember && !isParty') {{$t('donateGems')}} // Suggest removing the isMember restriction - it's okay if non-members donate to a public guild. Also probably allow it for parties if parties can buy imagery. -- Alys-->
+            <!-- @TODO: V2 button.btn.btn-primary(v-once,
+              v-if='isMember && !isParty') {{$t('donateGems')}}
+              // Suggest removing the isMember restriction
+               - it's okay if non-members donate to a public
+               guild. Also probably allow it for parties
+               if parties can buy imagery. -- Alys-->
           </div>
         </div>
       </div>
@@ -379,7 +388,6 @@ import groupUtilities from '@/mixins/groupsUtilities';
 import styleHelper from '@/mixins/styleHelper';
 import { mapState } from '@/libs/store';
 import * as Analytics from '@/libs/analytics';
-import membersModal from './membersModal';
 import startQuestModal from './startQuestModal';
 import questDetailsModal from './questDetailsModal';
 import participantListModal from './participantListModal';
@@ -406,7 +414,6 @@ import bronzeGuildBadgeIcon from '@/assets/svg/bronze-guild-badge-small.svg';
 
 export default {
   components: {
-    membersModal,
     startQuestModal,
     groupFormModal,
     groupChallenges,
diff --git a/website/client/src/components/groups/groupFormModal.vue b/website/client/src/components/groups/groupFormModal.vue
index 47734d8145..bc8e143846 100644
--- a/website/client/src/components/groups/groupFormModal.vue
+++ b/website/client/src/components/groups/groupFormModal.vue
@@ -49,14 +49,15 @@
           />
         </div>
         <!-- br-->
-        <!-- @TODO Implement in V2 .custom-control.custom-checkboxinput.custom-control-input(type="checkbox", v-model="workingGroup.guildLeaderCantBeMessaged")
+        <!-- @TODO Implement in V2 .custom-control.custom-checkboxinput.custom
+        -control-input(type="checkbox", v-model="workingGroup.guildLeaderCantBeMessaged")
 label.custom-control-label(v-once) {{ $t('guildLeaderCantBeMessaged') }}
 // "guildLeaderCantBeMessaged": "Leader can not be messaged directly",
 // @TODO discuss the impact of this with moderators before implementing
         -->
         <br>
         <div
-          v-if="!isParty && !this.workingGroup.id"
+          v-if="!isParty && !workingGroup.id"
           class="custom-control custom-checkbox"
         >
           <input
@@ -86,7 +87,9 @@ label.custom-control-label(v-once) {{ $t('guildLeaderCantBeMessaged') }}
           />
         </div>
         <!-- br-->
-        <!-- @TODO: Implement in v2 .custom-control.custom-checkbox(v-if='!creatingParty')input.custom-control-input(type="checkbox", v-model="workingGroup.allowGuildInvitationsFromNonMembers")
+        <!-- @TODO: Implement in v2 .custom-control.custom-checkbox(v-if='!creatingParty')
+        input.custom-control-input(type="checkbox", v-model="workingGroup.allowG
+        uildInvitationsFromNonMembers")
 label.custom-control-label(v-once) {{ $t('allowGuildInvitationsFromNonMembers') }}
 // "allowGuildInvitationsFromNonMembers": "Allow Guild invitations from non-members",
         -->
@@ -123,7 +126,8 @@ label.custom-control-label(v-once) {{ $t('allowGuildInvitationsFromNonMembers')
           class="form-control description-textarea"
           type="text"
           textarea="textarea"
-          :placeholder="isParty ? $t('partyDescriptionPlaceholder') : $t('guildDescriptionPlaceholder')"
+          :placeholder="isParty
+            ? $t('partyDescriptionPlaceholder') : $t('guildDescriptionPlaceholder')"
         ></textarea>
       </div>
       <div
@@ -155,6 +159,7 @@ label.custom-control-label(v-once) {{ $t('allowGuildInvitationsFromNonMembers')
           >{{ $t('none') }}</span>
           <div
             v-for="category in workingGroup.categories"
+            :key="category"
             class="category-label"
           >
             {{ $t(categoriesHashByKey[category]) }}
@@ -164,12 +169,14 @@ label.custom-control-label(v-once) {{ $t('allowGuildInvitationsFromNonMembers')
           v-if="showCategorySelect"
           class="category-box"
         >
+          <!-- eslint-disable vue/no-use-v-if-with-v-for -->
           <div
             v-for="group in categoryOptions"
             v-if="group.key !== 'habitica_official' || user.contributor.admin"
             :key="group.key"
             class="form-check"
           >
+            <!-- eslint-enable vue/no-use-v-if-with-v-for -->
             <div class="custom-control custom-checkbox">
               <input
                 :id="`category-${group.key}`"
@@ -192,7 +199,8 @@ label.custom-control-label(v-once) {{ $t('allowGuildInvitationsFromNonMembers')
             {{ $t('close') }}
           </button>
         </div>
-        <!-- @TODO: need categories only for PUBLIC GUILDS, not for tavern, private guilds, or party-->
+        <!-- @TODO: need categories only for PUBLIC GUILDS,
+         not for tavern, private guilds, or party-->
       </div>
       <div
         v-if="inviteMembers && !workingGroup.id"
@@ -203,6 +211,7 @@ label.custom-control-label(v-once) {{ $t('allowGuildInvitationsFromNonMembers')
           <p v-once>{{ $t('inviteMembersHowTo') }} *</p>
         </label>
         <div>
+          <!-- eslint-disable-next-line vue/require-v-for-key -->
           <div v-for="(member, index) in membersToInvite">
             <input
               v-model="member.value"
@@ -226,7 +235,7 @@ label.custom-control-label(v-once) {{ $t('allowGuildInvitationsFromNonMembers')
       </div>
       <div class="form-group text-center">
         <div
-          v-if="!this.workingGroup.id"
+          v-if="!workingGroup.id"
           class="item-with-icon"
         >
           <div
@@ -250,7 +259,7 @@ label.custom-control-label(v-once) {{ $t('allowGuildInvitationsFromNonMembers')
           {{ isParty ? $t('updateParty') : $t('updateGuild') }}
         </button>
         <div
-          v-if="!this.workingGroup.id"
+          v-if="!workingGroup.id"
           v-once
           class="gem-description"
         >
@@ -324,7 +333,6 @@ label.custom-control-label(v-once) {{ $t('allowGuildInvitationsFromNonMembers')
 <script>
 import { mapState } from '@/libs/store';
 import toggleSwitch from '@/components/ui/toggleSwitch';
-import groupMemberSearchDropdown from '@/components/members/groupMemberSearchDropdown';
 import markdownDirective from '@/directives/markdown';
 import gemIcon from '@/assets/svg/gem.svg';
 import informationIcon from '@/assets/svg/information.svg';
@@ -340,7 +348,6 @@ import { MAX_SUMMARY_SIZE_FOR_GUILDS } from '@/../../common/script/constants';
 export default {
   components: {
     toggleSwitch,
-    groupMemberSearchDropdown,
   },
   directives: {
     markdown: markdownDirective,
diff --git a/website/client/src/components/groups/groupPlan.vue b/website/client/src/components/groups/groupPlan.vue
index 1cce573cc0..5729913e55 100644
--- a/website/client/src/components/groups/groupPlan.vue
+++ b/website/client/src/components/groups/groupPlan.vue
@@ -24,7 +24,7 @@
               >
               <hr>
               <h2>{{ $t('teamBasedTasks') }}</h2>
-              <p>Set up an easily-viewed shared task list for the group. Assign tasks to your fellow group members, or let them claim their own tasks to make it clear what everyone is working on!</p>
+              <p>Set up an easily-viewed shared task list for the group. Assign tasks to your fellow group members, or let them claim their own tasks to make it clear what everyone is working on!</p><!-- eslint-disable-line max-len -->
             </div>
           </div>
           <div class="col-4">
@@ -35,7 +35,7 @@
               >
               <hr>
               <h2>Group Management Controls</h2>
-              <p>Use task approvals to verify that a task that was really completed, add Group Managers to share responsibilities, and enjoy a private group chat for all team members.</p>
+              <p>Use task approvals to verify that a task that was really completed, add Group Managers to share responsibilities, and enjoy a private group chat for all team members.</p><!-- eslint-disable-line max-len -->
             </div>
           </div>
           <div class="col-4">
@@ -46,7 +46,7 @@
               >
               <hr>
               <h2>In-Game Benefits</h2>
-              <p>Group members get an exclusive Jackalope Mount, as well as full subscription benefits, including special monthly equipment sets and the ability to buy gems with gold.</p>
+              <p>Group members get an exclusive Jackalope Mount, as well as full subscription benefits, including special monthly equipment sets and the ability to buy gems with gold.</p><!-- eslint-disable-line max-len -->
             </div>
           </div>
         </div>
diff --git a/website/client/src/components/groups/inviteModal.vue b/website/client/src/components/groups/inviteModal.vue
index c7d8f577d7..a072d139f9 100644
--- a/website/client/src/components/groups/inviteModal.vue
+++ b/website/client/src/components/groups/inviteModal.vue
@@ -9,6 +9,7 @@
       <div class="small">
         {{ $t('inviteEmailUsernameInfo') }}
       </div>
+      <!-- eslint-disable-next-line vue/require-v-for-key -->
       <div v-for="(invite, index) in invites">
         <div class="input-group">
           <div
@@ -25,7 +26,8 @@
             class="form-control"
             type="text"
             :placeholder="$t('emailOrUsernameInvite')"
-            :class="{'input-valid': invite.valid, 'is-invalid input-invalid': invite.valid === false}"
+            :class="{
+              'input-valid': invite.valid, 'is-invalid input-invalid': invite.valid === false}"
             @keyup="expandInviteList"
             @change="checkInviteList"
           >
diff --git a/website/client/src/components/groups/membersModal.vue b/website/client/src/components/groups/membersModal.vue
index 6cc52a7a36..e88644dc33 100644
--- a/website/client/src/components/groups/membersModal.vue
+++ b/website/client/src/components/groups/membersModal.vue
@@ -3,7 +3,7 @@
   <div>
     <remove-member-modal
       :member-to-remove="memberToRemove"
-      :group-id="this.groupId"
+      :group-id="groupId"
       @member-removed="memberRemoved"
     />
     <b-modal
@@ -49,6 +49,7 @@
             >
               <option
                 v-for="sortOption in sortOptions"
+                :key="sortOption.value"
                 :value="sortOption.value"
               >
                 {{ sortOption.text }}
@@ -62,6 +63,7 @@
             >
               <option
                 v-for="sortDirection in sortDirections"
+                :key="sortDirection.value"
                 :value="sortDirection.value"
               >
                 {{ sortDirection.text }}
@@ -100,6 +102,7 @@
       <div v-if="selectedPage === 'members'">
         <div
           v-for="(member, index) in sortedMembers"
+          :key="member._id"
           class="row"
         >
           <div class="col-11 no-padding-left">
@@ -201,6 +204,7 @@
       <div v-if="selectedPage === 'invites'">
         <div
           v-for="(member, index) in invites"
+          :key="member._id"
           class="row"
         >
           <div class="col-11 no-padding-left">
diff --git a/website/client/src/components/groups/myGuilds.vue b/website/client/src/components/groups/myGuilds.vue
index 7a96d4033e..1934bffaf8 100644
--- a/website/client/src/components/groups/myGuilds.vue
+++ b/website/client/src/components/groups/myGuilds.vue
@@ -28,9 +28,11 @@
             ></div>
             <span v-once>{{ $t('createGuild2') }}</span>
           </button>
-          <!-- @TODO: Add when we implement recent activity .float-rightspan.dropdown-label {{ $t('sortBy') }}
+          <!-- @TODO: Add when we implement recent activity
+          .float-rightspan.dropdown-label {{ $t('sortBy') }}
 b-dropdown(:text="$t('sort')", right=true)
-  b-dropdown-item(v-for='sortOption in sortOptions', :key="sortOption.value", @click='sort(sortOption.value)') {{sortOption.text}}
+  b-dropdown-item(v-for='sortOption in sortOptions',
+   :key="sortOption.value", @click='sort(sortOption.value)') {{sortOption.text}}
           -->
         </div>
       </div>
@@ -107,7 +109,6 @@ b-dropdown(:text="$t('sort')", right=true)
 </style>
 
 <script>
-import MugenScroll from 'vue-mugen-scroll';
 import { mapState } from '@/libs/store';
 import groupUtilities from '@/mixins/groupsUtilities';
 
@@ -119,7 +120,7 @@ import greyBadgeIcon from '@/assets/svg/grey-badge.svg';
 import positiveIcon from '@/assets/svg/positive.svg';
 
 export default {
-  components: { PublicGuildItem, MugenScroll, Sidebar },
+  components: { PublicGuildItem, Sidebar },
   mixins: [groupUtilities],
   data () {
     return {
diff --git a/website/client/src/components/groups/participantListModal.vue b/website/client/src/components/groups/participantListModal.vue
index 9d99c397de..e284700519 100644
--- a/website/client/src/components/groups/participantListModal.vue
+++ b/website/client/src/components/groups/participantListModal.vue
@@ -28,6 +28,7 @@
     </div>
     <div
       v-for="member in participants"
+      :key="member._id"
       class="row"
     >
       <div class="col-12 no-padding-left">
diff --git a/website/client/src/components/groups/publicGuildItem.vue b/website/client/src/components/groups/publicGuildItem.vue
index 59ae35ff8d..1226b78bf0 100644
--- a/website/client/src/components/groups/publicGuildItem.vue
+++ b/website/client/src/components/groups/publicGuildItem.vue
@@ -9,7 +9,9 @@
           <div class="col-md-2 badge-column">
             <div
               class="shield-wrap"
-              :class="{gold: guild.memberCount >= 1000, silver: guild.memberCount >= 100 && guild.memberCount < 1000}"
+              :class="{
+                gold: guild.memberCount >= 1000,
+                silver: guild.memberCount >= 100 && guild.memberCount < 1000}"
             >
               <div
                 v-if="guild.memberCount >= 1000"
diff --git a/website/client/src/components/groups/questDetailsModal.vue b/website/client/src/components/groups/questDetailsModal.vue
index 5c5f025034..c095ea5e55 100644
--- a/website/client/src/components/groups/questDetailsModal.vue
+++ b/website/client/src/components/groups/questDetailsModal.vue
@@ -21,6 +21,7 @@
       <div class="row">
         <div
           v-for="member in members"
+          :key="member._id"
           class="col-12 member"
         >
           <strong :class="{'declined-name': member.accepted === false}">{{ member.name }}</strong>
@@ -60,7 +61,9 @@
         >
           {{ $t('begin') }}
         </button>
-        <!-- @TODO don't allow the party leader to start the quest until the leader has accepted or rejected the invitation (users get confused and think "begin" means "join quest")-->
+        <!-- @TODO don't allow the party leader to
+         start the quest until the leader has accepted
+        or rejected the invitation (users get confused and think "begin" means "join quest")-->
       </div>
       <div>
         <div
@@ -243,6 +246,7 @@ export default {
       return partyMembers.map(member => ({
         name: member.profile.name,
         accepted: this.group.quest.members[member._id],
+        _id: member._id,
       }));
     },
     canEditQuest () {
diff --git a/website/client/src/components/groups/questSidebarSection.vue b/website/client/src/components/groups/questSidebarSection.vue
index 4c75f69eec..24da128790 100644
--- a/website/client/src/components/groups/questSidebarSection.vue
+++ b/website/client/src/components/groups/questSidebarSection.vue
@@ -92,6 +92,7 @@
             </div>
             <div
               v-for="(value, key) in questData.collect"
+              :key="key"
               class="row"
             >
               <div class="col-2">
@@ -148,19 +149,22 @@
             <div class="row boss-details">
               <div class="col-6">
                 <span class="float-left">
-                  {{ Math.ceil(parseFloat(group.quest.progress.hp) * 100) / 100 }} / {{ parseFloat(questData.boss.hp).toFixed(2) }}
-                  <!-- current boss hp uses ceil so you don't underestimate damage needed to end quest-->
+                  {{ Math.ceil(parseFloat(group.quest.progress.hp) * 100) / 100 }} / {{ parseFloat(questData.boss.hp).toFixed(2) }} <!-- eslint-disable-line max-len -->
+                  <!-- current boss hp uses ceil so
+                    you don't underestimate damage needed to end quest-->
                 </span>
               </div>
               <div
                 v-if="userIsOnQuest"
                 class="col-6"
               >
-                <!-- @TODO: Why do we not sync quest progress on the group doc? Each user could have different progress.-->
+                <!-- @TODO: Why do we not sync quest
+                  progress on the group doc? Each user could have different progress.-->
                 <span
                   class="float-right"
-                >{{ user.party.quest.progress.up | floor(10) }} {{ $t('pendingDamageLabel') }}</span>
-                <!-- player's pending damage uses floor so you don't overestimate damage you've already done-->
+                >{{ user.party.quest.progress.up | floor(10) }} {{ $t('pendingDamageLabel') }}</span> <!-- eslint-disable-line max-len -->
+                <!-- player's pending damage uses floor so you
+                  don't overestimate damage you've already done-->
               </div>
             </div>
             <div
@@ -171,7 +175,8 @@
                 <div class="grey-progress-bar">
                   <div
                     class="boss-health-bar rage-bar"
-                    :style="{width: (group.quest.progress.rage / questData.boss.rage.value) * 100 + '%'}"
+                    :style="{
+                      width: (group.quest.progress.rage / questData.boss.rage.value) * 100 + '%'}"
                   ></div>
                 </div>
               </div>
@@ -183,7 +188,7 @@
               <div class="col-6">
                 <span
                   class="float-left"
-                >{{ $t('rage') }} {{ parseFloat(group.quest.progress.rage).toFixed(2) }} / {{ questData.boss.rage.value }}</span>
+                >{{ $t('rage') }} {{ parseFloat(group.quest.progress.rage).toFixed(2) }} / {{ questData.boss.rage.value }}</span> <!-- eslint-disable-line max-len -->
               </div>
             </div>
           </div>
diff --git a/website/client/src/components/groups/startQuestModal.vue b/website/client/src/components/groups/startQuestModal.vue
index 38247daada..340cac2aa3 100644
--- a/website/client/src/components/groups/startQuestModal.vue
+++ b/website/client/src/components/groups/startQuestModal.vue
@@ -11,13 +11,16 @@
         Quests
       </h3>
       <div class="row">
+        <!-- eslint-disable vue/no-use-v-if-with-v-for -->
         <div
-          v-for="(value, key, index) in user.items.quests"
+          v-for="(value, key) in user.items.quests"
           v-if="value > 0"
+          :key="key"
           class="col-4 quest-col"
           :class="{selected: key === selectedQuest}"
           @click="selectQuest({key})"
         >
+          <!-- eslint-enable vue/no-use-v-if-with-v-for -->
           <div class="quest-wrapper">
             <b-popover
               :target="`inventory_quest_scroll_${key}`"
diff --git a/website/client/src/components/groups/tavern.vue b/website/client/src/components/groups/tavern.vue
index 0d38793045..ab1b16df14 100644
--- a/website/client/src/components/groups/tavern.vue
+++ b/website/client/src/components/groups/tavern.vue
@@ -26,7 +26,10 @@
           <div
             v-if="group && group.quest && group.quest.active"
             class="world-boss"
-            :style="{background: questData.colors.dark, 'border-color': questData.colors.extralight, 'outline-color': questData.colors.light}"
+            :style="{
+              background: questData.colors.dark,
+              'border-color': questData.colors.extralight,
+              'outline-color': questData.colors.light}"
           >
             <div
               class="corner-decoration"
@@ -105,7 +108,9 @@
                 ></div>
                 <span
                   class="reduce ml-1 pt-1"
-                >{{ $t('bossHealth', {currentHealth: bossCurrentHealth(), maxHealth: questData.boss.hp.toLocaleString()}) }}</span>
+                >{{ $t('bossHealth', {
+                  currentHealth: bossCurrentHealth(),
+                  maxHealth: questData.boss.hp.toLocaleString()}) }}</span>
               </span>
               <div class="mt-3 mb-2">
                 <strong class="mr-1">{{ $t('rageAttack') }}</strong>
@@ -114,7 +119,8 @@
               <div class="grey-progress-bar mb-1">
                 <div
                   class="boss-health-bar rage-bar"
-                  :style="{width: (group.quest.progress.rage / questData.boss.rage.value) * 100 + '%'}"
+                  :style="{
+                    width: (group.quest.progress.rage / questData.boss.rage.value) * 100 + '%'}"
                 ></div>
               </div>
               <span class="d-flex align-items-center">
@@ -124,7 +130,9 @@
                 ></div>
                 <span
                   class="reduce ml-1 pt-1"
-                >{{ $t('bossRage', {currentRage: bossCurrentRage(), maxRage: questData.boss.rage.value.toLocaleString()}) }}</span>
+                >{{ $t('bossRage', {
+                  currentRage: bossCurrentRage(),
+                  maxRage: questData.boss.rage.value.toLocaleString()}) }}</span>
               </span>
               <div class="row d-flex align-items-center mb-2 mt-2">
                 <div class="col-sm-4 d-flex">
@@ -217,7 +225,8 @@
               ></div>
             </div>
           </div>
-          <!-- .text-center.mt-4.world-boss-info-button(@click="showWorldBossInfo()") {{$t('whatIsWorldBoss') }}
+          <!-- .text-center.mt-4.world-boss
+          -info-button(@click="showWorldBossInfo()") {{$t('whatIsWorldBoss') }}
           -->
         </div>
         <div class="sleep below-header-sections">
@@ -259,8 +268,12 @@
           <div class="row">
             <div
               v-for="user in staff"
+              :key="user.uuid"
               class="col-4 staff"
-              :class="{staff: user.type === 'Staff', moderator: user.type === 'Moderator', bailey: user.name === 'It's Bailey'}"
+              :class="{
+                staff: user.type === 'Staff',
+                moderator: user.type === 'Moderator',
+                bailey: user.name === 'It\'s Bailey'}"
             >
               <div>
                 <router-link
@@ -275,12 +288,12 @@
                   v-html="icons.tierStaff"
                 ></div>
                 <div
-                  v-if="user.type === 'Moderator' && user.name !== 'It's Bailey'"
+                  v-if="user.type === 'Moderator' && user.name !== 'It\'s Bailey'"
                   class="svg-icon mod-icon"
                   v-html="icons.tierMod"
                 ></div>
                 <div
-                  v-if="user.name === 'It's Bailey'"
+                  v-if="user.name === 'It\'s Bailey'"
                   class="svg-icon npc-icon"
                   v-html="icons.tierNPC"
                 ></div>
diff --git a/website/client/src/components/hall/heroes.vue b/website/client/src/components/hall/heroes.vue
index ba11d5b3a6..0fe8dad9b7 100644
--- a/website/client/src/components/hall/heroes.vue
+++ b/website/client/src/components/hall/heroes.vue
@@ -48,7 +48,7 @@
               >
               <small>
                 Common titles:
-                <strong>Ambassador, Artisan, Bard, Blacksmith, Challenger, Comrade, Fletcher, Linguist, Linguistic Scribe, Scribe, Socialite, Storyteller</strong>. Rare titles: Advisor, Chamberlain, Designer, Mathematician, Shirtster, Spokesperson, Statistician, Tinker, Transcriber, Troubadour.
+                <strong>Ambassador, Artisan, Bard, Blacksmith, Challenger, Comrade, Fletcher, Linguist, Linguistic Scribe, Scribe, Socialite, Storyteller</strong>. Rare titles: Advisor, Chamberlain, Designer, Mathematician, Shirtster, Spokesperson, Statistician, Tinker, Transcriber, Troubadour. <!-- eslint-disable-line max-len -->
               </small>
             </div>
             <div class="form-group">
@@ -59,7 +59,7 @@
                 type="number"
               >
               <small>
-                1-7 for normal contributors, 8 for moderators, 9 for staff. This determines which items, pets, and mounts are available, and name-tag coloring. Tiers 8 and 9 are automatically given admin status.&nbsp;
+                1-7 for normal contributors, 8 for moderators, 9 for staff. This determines which items, pets, and mounts are available, and name-tag coloring. Tiers 8 and 9 are automatically given admin status.&nbsp; <!-- eslint-disable-line max-len -->
                 <a
                   target="_blank"
                   href="https://trello.com/c/wkFzONhE/277-contributor-gear"
@@ -89,7 +89,7 @@
               <small>
                 <span>
                   '{{ hero.balance }}' is in USD,
-                  <em>not</em> in Gems. E.g., if this number is 1, it means 4 Gems. Only use this option when manually granting Gems to players, don't use it when granting contributor tiers. Contrib tiers will automatically add Gems.
+                  <em>not</em> in Gems. E.g., if this number is 1, it means 4 Gems. Only use this option when manually granting Gems to players, don't use it when granting contributor tiers. Contrib tiers will automatically add Gems. <!-- eslint-disable-line max-len -->
                 </span>
               </small>
             </div>
@@ -134,7 +134,7 @@
                     <strong>item value</strong>. E.g.,
                     <code>5</code> or
                     <code>false</code> or
-                    <code>head_warrior_3</code>. All values are listed in the All Item Paths section below.
+                    <code>head_warrior_3</code>. All values are listed in the All Item Paths section below. <!-- eslint-disable-line max-len -->
                   </small>
                   <div class="accordion">
                     <div
@@ -229,7 +229,10 @@
             </tr>
           </thead>
           <tbody>
-            <tr v-for="(hero, index) in heroes">
+            <tr
+              v-for="(hero, index) in heroes"
+              :key="hero._id"
+            >
               <td>
                 <user-link
                   v-if="hero.contributor && hero.contributor.admin"
diff --git a/website/client/src/components/hall/patrons.vue b/website/client/src/components/hall/patrons.vue
index 22f32afd4c..534bd1ba13 100644
--- a/website/client/src/components/hall/patrons.vue
+++ b/website/client/src/components/hall/patrons.vue
@@ -16,7 +16,10 @@
           </tr>
         </thead>
         <tbody>
-          <tr v-for="patron in patrons">
+          <tr
+            v-for="patron in patrons"
+            :key="patron._id"
+          >
             <td>
               <a
                 v-class="userLevelStyle(patron)"
diff --git a/website/client/src/components/header/index.vue b/website/client/src/components/header/index.vue
index f28afefd11..bc5a3e50bb 100644
--- a/website/client/src/components/header/index.vue
+++ b/website/client/src/components/header/index.vue
@@ -33,6 +33,7 @@
         class="party-members d-flex"
         @resized="setPartyMembersWidth($event)"
       >
+        <!-- eslint-disable vue/no-use-v-if-with-v-for -->
         <member-details
           v-for="(member, $index) in sortedPartyMembers"
           v-if="member._id !== user._id && $index < membersToShow"
@@ -44,6 +45,7 @@
           :class-badge-position="'hidden'"
           @onHover="expandMember(member._id)"
         />
+        <!-- eslint-enable vue/no-use-v-if-with-v-for -->
       </div>
       <div
         v-else
diff --git a/website/client/src/components/header/menu.vue b/website/client/src/components/header/menu.vue
index 0bf4e1b667..c2b55381c2 100644
--- a/website/client/src/components/header/menu.vue
+++ b/website/client/src/components/header/menu.vue
@@ -57,7 +57,9 @@
           </b-nav-item>
           <li
             class="topbar-item droppable"
-            :class="{'active': $route.path.startsWith('/inventory'), 'down': $route.path.startsWith('/inventory') && this.isDesktop()}"
+            :class="{
+              'active': $route.path.startsWith('/inventory'),
+              'down': $route.path.startsWith('/inventory') && isDesktop()}"
           >
             <div
               class="chevron rotate"
@@ -99,7 +101,9 @@
           </li>
           <li
             class="topbar-item droppable"
-            :class="{'active': $route.path.startsWith('/shop'), 'down': $route.path.startsWith('/shop') && this.isDesktop()}"
+            :class="{
+              'active': $route.path.startsWith('/shop'),
+              'down': $route.path.startsWith('/shop') && isDesktop()}"
           >
             <div
               class="chevron rotate"
@@ -146,7 +150,7 @@
             </div>
           </li>
           <b-nav-item
-            v-if="this.user.party._id"
+            v-if="user.party._id"
             class="topbar-item"
             :class="{'active': $route.path.startsWith('/party')}"
             tag="li"
@@ -155,7 +159,7 @@
             {{ $t('party') }}
           </b-nav-item>
           <b-nav-item
-            v-if="!this.user.party._id"
+            v-if="!user.party._id"
             class="topbar-item"
             :class="{'active': $route.path.startsWith('/party')}"
             @click="openPartyModal()"
@@ -164,7 +168,9 @@
           </b-nav-item>
           <li
             class="topbar-item droppable"
-            :class="{'active': $route.path.startsWith('/groups'), 'down': $route.path.startsWith('/groups') && this.isDesktop()}"
+            :class="{
+              'active': $route.path.startsWith('/groups'),
+              'down': $route.path.startsWith('/groups') && isDesktop()}"
           >
             <div
               class="chevron rotate"
@@ -205,7 +211,9 @@
           </li>
           <li
             class="topbar-item droppable"
-            :class="{'active': $route.path.startsWith('/group-plans'), 'down': $route.path.startsWith('/group-plans') && this.isDesktop()}"
+            :class="{
+              'active': $route.path.startsWith('/group-plans'),
+              'down': $route.path.startsWith('/group-plans') && isDesktop()}"
           >
             <div
               v-if="groupPlans.length > 0"
@@ -237,7 +245,9 @@
           </li>
           <li
             class="topbar-item droppable"
-            :class="{'active': $route.path.startsWith('/challenges'), 'down': $route.path.startsWith('/challenges') && this.isDesktop()}"
+            :class="{
+              'active': $route.path.startsWith('/challenges'),
+              'down': $route.path.startsWith('/challenges') && isDesktop()}"
           >
             <div
               class="chevron rotate"
@@ -272,7 +282,9 @@
           </li>
           <li
             class="topbar-item droppable"
-            :class="{'active': $route.path.startsWith('/help'), 'down': $route.path.startsWith('/help') && this.isDesktop()}"
+            :class="{
+              'active': $route.path.startsWith('/help'),
+              'down': $route.path.startsWith('/help') && isDesktop()}"
           >
             <div
               class="chevron rotate"
diff --git a/website/client/src/components/header/messageCount.vue b/website/client/src/components/header/messageCount.vue
index b8673b0524..4b93ffe454 100644
--- a/website/client/src/components/header/messageCount.vue
+++ b/website/client/src/components/header/messageCount.vue
@@ -1,7 +1,8 @@
-<template lang="pug" functional>
-span.message-count(
-  :class="{'top-count': props.top === true, 'top-count-gray': props.gray === true}"
-) {{props.count}}
+<template functional>
+  <span
+    class="message-count"
+    :class="{'top-count': props.top === true, 'top-count-gray': props.gray === true}"
+  > {{ props.count }} </span>
 </template>
 
 <style lang="scss">
diff --git a/website/client/src/components/header/notifications/challengeInvitation.vue b/website/client/src/components/header/notifications/challengeInvitation.vue
index 852a0425c5..5d8e414f1b 100644
--- a/website/client/src/components/header/notifications/challengeInvitation.vue
+++ b/website/client/src/components/header/notifications/challengeInvitation.vue
@@ -1,3 +1,3 @@
-<template lang="pug" functional>
-div {{ props.notification }}
+<template functional>
+  <div>{{ props.notification }}</div>
 </template>
diff --git a/website/client/src/components/header/notifications/groupTaskApproval.vue b/website/client/src/components/header/notifications/groupTaskApproval.vue
index 8511837d21..7cd0bb92b8 100644
--- a/website/client/src/components/header/notifications/groupTaskApproval.vue
+++ b/website/client/src/components/header/notifications/groupTaskApproval.vue
@@ -81,7 +81,7 @@ export default {
         return;
       }
 
-      if (!confirm(this.$t('confirmNeedsWork'))) return;
+      if (!window.confirm(this.$t('confirmNeedsWork'))) return;
 
       await this.$store.dispatch('tasks:needsWork', {
         taskId: this.notification.data.groupTaskId,
diff --git a/website/client/src/components/header/notifications/guildInvitation.vue b/website/client/src/components/header/notifications/guildInvitation.vue
index 69817418b3..1a767b9db2 100644
--- a/website/client/src/components/header/notifications/guildInvitation.vue
+++ b/website/client/src/components/header/notifications/guildInvitation.vue
@@ -60,7 +60,7 @@ export default {
     async accept () {
       const group = this.notification.data;
 
-      if (group.cancelledPlan && !confirm(this.$t('aboutToJoinCancelledGroupPlan'))) {
+      if (group.cancelledPlan && !window.confirm(this.$t('aboutToJoinCancelledGroupPlan'))) {
         return;
       }
 
diff --git a/website/client/src/components/header/notifications/partyInvitation.vue b/website/client/src/components/header/notifications/partyInvitation.vue
index f77416c4bf..b13b261651 100644
--- a/website/client/src/components/header/notifications/partyInvitation.vue
+++ b/website/client/src/components/header/notifications/partyInvitation.vue
@@ -40,7 +40,7 @@ export default {
     async accept () {
       const group = this.notification.data;
 
-      if (group.cancelledPlan && !confirm(this.$t('aboutToJoinCancelledGroupPlan'))) {
+      if (group.cancelledPlan && !window.confirm(this.$t('aboutToJoinCancelledGroupPlan'))) {
         return;
       }
 
diff --git a/website/client/src/components/header/notifications/worldBoss.vue b/website/client/src/components/header/notifications/worldBoss.vue
index 6562b0bc94..48e3876173 100644
--- a/website/client/src/components/header/notifications/worldBoss.vue
+++ b/website/client/src/components/header/notifications/worldBoss.vue
@@ -50,6 +50,7 @@
   </base-notification>
 </template>
 
+<!-- eslint-disable max-len -->
 <style lang="scss" scoped>
   .background {
     position: relative;
@@ -157,6 +158,7 @@
     color: #fff;
   }
 </style>
+<!-- eslint-enable max-len -->
 
 <script>
 import * as quests from '@/../../common/script/content/quests';
@@ -183,10 +185,6 @@ export default {
       worldBoss: {},
     };
   },
-  async mounted () {
-    const result = await this.$store.dispatch('worldState:getWorldState');
-    this.worldBoss = result.worldBoss;
-  },
   computed: {
     ...mapState({ user: 'user.data' }),
     bossHp () {
@@ -196,6 +194,10 @@ export default {
       return this.questData.boss.hp.toLocaleString();
     },
   },
+  async mounted () {
+    const result = await this.$store.dispatch('worldState:getWorldState');
+    this.worldBoss = result.worldBoss;
+  },
   methods: {
     action () {
       this.$router.push({ name: 'tavern' });
diff --git a/website/client/src/components/header/notificationsDropdown.vue b/website/client/src/components/header/notificationsDropdown.vue
index 09bf3f2bd9..c55d344242 100644
--- a/website/client/src/components/header/notificationsDropdown.vue
+++ b/website/client/src/components/header/notificationsDropdown.vue
@@ -24,7 +24,8 @@
     </div>
     <div slot="dropdown-content">
       <div
-        class="dropdown-item dropdown-separated d-flex justify-content-between dropdown-inactive align-items-center"
+        class="dropdown-item dropdown-separated
+         d-flex justify-content-between dropdown-inactive align-items-center"
         @click.stop
       >
         <h4
@@ -49,7 +50,8 @@
       />
       <div
         v-if="notificationsCount === 0"
-        class="dropdown-item dropdown-separated d-flex justify-content-center dropdown-inactive no-notifications flex-column"
+        class="dropdown-item dropdown-separated
+         d-flex justify-content-center dropdown-inactive no-notifications flex-column"
       >
         <div
           class="svg-icon"
diff --git a/website/client/src/components/header/userDropdown.vue b/website/client/src/components/header/userDropdown.vue
index b1d91f437a..1809b8c2ab 100644
--- a/website/client/src/components/header/userDropdown.vue
+++ b/website/client/src/components/header/userDropdown.vue
@@ -31,7 +31,8 @@
         <span class="small-text">{{ $t('editAvatar') }}</span>
       </a>
       <a
-        class="nav-link dropdown-item dropdown-separated d-flex justify-content-between align-items-center"
+        class="nav-link dropdown-item
+         dropdown-separated d-flex justify-content-between align-items-center"
         @click.prevent="showInbox()"
       >
         <div>{{ $t('messages') }}</div>
@@ -73,7 +74,7 @@
         @click.prevent="logout()"
       >{{ $t('logout') }}</a>
       <li
-        v-if="!this.user.purchased.plan.customerId"
+        v-if="!user.purchased.plan.customerId"
         @click="showBuyGemsModal('subscribe')"
       >
         <div class="dropdown-item text-center">
diff --git a/website/client/src/components/inventory/equipment/index.vue b/website/client/src/components/inventory/equipment/index.vue
index c974b99800..0d9d819c65 100644
--- a/website/client/src/components/inventory/equipment/index.vue
+++ b/website/client/src/components/inventory/equipment/index.vue
@@ -13,7 +13,7 @@
         <h2 v-once>
           {{ $t('filter') }}
         </h2>
-        <h3>{{ this.groupBy === 'type' ? $t('equipmentType') : $t('class') }}</h3>
+        <h3>{{ groupBy === 'type' ? $t('equipmentType') : $t('class') }}</h3>
         <div class="form-group">
           <div
             v-for="group in itemsGroups"
@@ -122,11 +122,14 @@
             :key="flatGear[activeItems[group]] ? flatGear[activeItems[group]].key : group"
             class="pointer"
             :item="flatGear[activeItems[group]]"
-            :item-content-class="flatGear[activeItems[group]] ? 'shop_' + flatGear[activeItems[group]].key : null"
-            :empty-item="!flatGear[activeItems[group]] || flatGear[activeItems[group]].key.indexOf('_base_0') !== -1"
+            :item-content-class="flatGear[activeItems[group]]
+              ? 'shop_' + flatGear[activeItems[group]].key : null"
+            :empty-item="!flatGear[activeItems[group]]
+              || flatGear[activeItems[group]].key.indexOf('_base_0') !== -1"
             :label="label"
             :popover-position="'top'"
-            :show-popover="flatGear[activeItems[group]] && Boolean(flatGear[activeItems[group]].text)"
+            :show-popover="flatGear[activeItems[group]]
+              && Boolean(flatGear[activeItems[group]].text)"
             @click="equipItem(flatGear[activeItems[group]])"
           >
             <template
@@ -148,12 +151,14 @@
           </item>
         </div>
       </drawer>
+      <!-- eslint-disable vue/no-use-v-if-with-v-for -->
       <div
         v-for="group in itemsGroups"
         v-if="!anyFilterSelected || viewOptions[group.key].selected"
         :key="group.key"
         :class="group.key"
       >
+        <!-- eslint-enable vue/no-use-v-if-with-v-for -->
         <h2 class="mb-3">
           {{ group.label }}
           <span
diff --git a/website/client/src/components/inventory/items/index.vue b/website/client/src/components/inventory/items/index.vue
index 5b2578867a..8029e8bdc8 100644
--- a/website/client/src/components/inventory/items/index.vue
+++ b/website/client/src/components/inventory/items/index.vue
@@ -72,11 +72,14 @@
           </b-dropdown>
         </div>
       </div>
+
+      <!-- eslint-disable vue/no-use-v-if-with-v-for -->
       <div
         v-for="group in groups"
         v-if="!anyFilterSelected || group.selected"
         :key="group.key"
       >
+        <!-- eslint-enable vue/no-use-v-if-with-v-for -->
         <h2 class="mb-3">
           {{ $t(group.key) }}
           <span
@@ -472,7 +475,7 @@ export default {
         quantity: this.user.purchased.plan.mysteryItems.length,
       });
 
-      for (const type in this.content.cardTypes) {
+      for (const type of Object.keys(this.content.cardTypes)) {
         const card = this.user.items.special[`${type}Received`] || [];
         if (this.user.items.special[type] > 0 || card.length > 0) {
           specialArray.push({
diff --git a/website/client/src/components/inventory/stable/hatchingModal.vue b/website/client/src/components/inventory/stable/hatchingModal.vue
index e158aa6a05..e222daa479 100644
--- a/website/client/src/components/inventory/stable/hatchingModal.vue
+++ b/website/client/src/components/inventory/stable/hatchingModal.vue
@@ -17,7 +17,9 @@
       </h4>
       <div
         class="text"
-        v-html="$t('hatchDialogText', { potionName: hatchablePet.potionName, eggName: hatchablePet.eggName, petName: hatchablePet.name })"
+        v-html="$t('hatchDialogText', {
+          potionName: hatchablePet.potionName,
+          eggName: hatchablePet.eggName, petName: hatchablePet.name })"
       ></div>
     </div>
     <span
diff --git a/website/client/src/components/inventory/stable/index.vue b/website/client/src/components/inventory/stable/index.vue
index 45c587f1c4..573abe4053 100644
--- a/website/client/src/components/inventory/stable/index.vue
+++ b/website/client/src/components/inventory/stable/index.vue
@@ -134,21 +134,27 @@
           class="badge badge-pill badge-default"
         >{{ countOwnedAnimals(petGroups[0], 'pet') }}</span>
       </h2>
+      <!-- eslint-disable vue/no-use-v-if-with-v-for -->
       <div
-        v-for="(petGroup, index) in petGroups"
+        v-for="(petGroup) in petGroups"
         v-if="!anyFilterSelected || viewOptions[petGroup.key].selected"
         :key="petGroup.key"
       >
+        <!-- eslint-enable vue/no-use-v-if-with-v-for -->
         <h4 v-if="viewOptions[petGroup.key].animalCount !== 0">
           {{ petGroup.label }}
         </h4>
+        <!-- eslint-disable vue/no-use-v-if-with-v-for, max-len -->
         <div
           v-for="(group, key, index) in pets(petGroup, hideMissing, selectedSortBy, searchTextThrottled)"
           v-if="index === 0 || $_openedItemRows_isToggled(petGroup.key)"
+          :key="key"
           class="pet-row d-flex"
         >
+          <!-- eslint-enable vue/no-use-v-if-with-v-for -->
           <div
             v-for="item in group"
+            :key="item.key"
             v-drag.drop.food="item.key"
             class="pet-group"
             :class="{'last': item.isLastInRow}"
@@ -190,21 +196,27 @@
           class="badge badge-pill badge-default"
         >{{ countOwnedAnimals(mountGroups[0], 'mount') }}</span>
       </h2>
+      <!-- eslint-disable vue/no-use-v-if-with-v-for -->
       <div
         v-for="mountGroup in mountGroups"
         v-if="!anyFilterSelected || viewOptions[mountGroup.key].selected"
         :key="mountGroup.key"
       >
+        <!-- eslint-enable vue/no-use-v-if-with-v-for -->
         <h4 v-if="viewOptions[mountGroup.key].animalCount != 0">
           {{ mountGroup.label }}
         </h4>
+        <!-- eslint-disable vue/no-use-v-if-with-v-for, max-len -->
         <div
           v-for="(group, key, index) in mounts(mountGroup, hideMissing, selectedSortBy, searchTextThrottled)"
           v-if="index === 0 || $_openedItemRows_isToggled(mountGroup.key)"
+          :key="key"
           class="pet-row d-flex"
         >
+          <!-- eslint-enable vue/no-use-v-if-with-v-for -->
           <div
             v-for="item in group"
+            :key="item.key"
             class="pet-group"
           >
             <mountItem
@@ -219,7 +231,6 @@
               </span>
               <template
                 slot="itemBadge"
-                slot-scope="context"
               >
                 <starBadge
                   :selected="item.key === currentMount"
@@ -459,8 +470,6 @@ import _throttle from 'lodash/throttle';
 import groupBy from 'lodash/groupBy';
 import { mapState } from '@/libs/store';
 
-import Item from '../item';
-import ItemRows from '@/components/ui/itemRows';
 import PetItem from './petItem';
 import MountItem from './mountItem.vue';
 import FoodItem from './foodItem';
@@ -468,11 +477,8 @@ import HatchedPetDialog from './hatchedPetDialog';
 import MountRaisedModal from './mountRaisedModal';
 import WelcomeModal from './welcomeModal';
 import HatchingModal from './hatchingModal';
-import Drawer from '@/components/ui/drawer';
 import toggleSwitch from '@/components/ui/toggleSwitch';
 import StarBadge from '@/components/ui/starBadge';
-import CountBadge from '@/components/ui/countBadge';
-import DrawerSlider from '@/components/ui/drawerSlider';
 import InventoryDrawer from '@/components/shared/inventoryDrawer';
 
 import ResizeDirective from '@/directives/resize.directive';
@@ -500,15 +506,10 @@ let lastMouseMoveEvent = {};
 export default {
   components: {
     PetItem,
-    Item,
-    ItemRows,
     FoodItem,
     MountItem,
-    Drawer,
     toggleSwitch,
     StarBadge,
-    CountBadge,
-    DrawerSlider,
     HatchedPetDialog,
     MountRaisedModal,
     WelcomeModal,
diff --git a/website/client/src/components/payments/amazonButton.vue b/website/client/src/components/payments/amazonButton.vue
index cfa4550357..50ea29052f 100644
--- a/website/client/src/components/payments/amazonButton.vue
+++ b/website/client/src/components/payments/amazonButton.vue
@@ -92,7 +92,7 @@ export default {
 
             this.$set(this.amazonPayments, 'loggedIn', true);
 
-            this.$root.$emit('habitica::pay-with-amazon', this.amazonPayments);
+            return this.$root.$emit('habitica::pay-with-amazon', this.amazonPayments);
           },
           authorization: () => {
             if (this.amazonDisabled === true) return;
diff --git a/website/client/src/components/payments/buyGemsModal.vue b/website/client/src/components/payments/buyGemsModal.vue
index 5f06ddddcf..a73bdc1e67 100644
--- a/website/client/src/components/payments/buyGemsModal.vue
+++ b/website/client/src/components/payments/buyGemsModal.vue
@@ -546,16 +546,16 @@
   }
 
   .gem-count {
-		font-family: Roboto;
-		font-size: 40px;
-		font-weight: bold;
-		color: #2995cd;
+    font-family: Roboto;
+    font-size: 40px;
+    font-weight: bold;
+    color: #2995cd;
   }
 
   .gem-text {
-		font-family: Roboto;
-		font-size: 16px;
-		color: #a5a1ac;
+    font-family: Roboto;
+    font-size: 16px;
+    color: #a5a1ac;
     margin-bottom: 1em;
   }
 
@@ -608,10 +608,10 @@
   }
 
   .subscription-price {
-		font-family: Roboto Condensed;
-		font-size: 48px;
-		font-weight: bold;
-		color: #1ca372;
+    font-family: Roboto Condensed;
+    font-size: 48px;
+    font-weight: bold;
+    color: #1ca372;
   }
 
   .superscript {
@@ -670,7 +670,6 @@ import amazonButton from '@/components/payments/amazonButton';
 
 export default {
   components: {
-    planGemLimits,
     amazonButton,
   },
   directives: {
@@ -705,7 +704,8 @@ export default {
     },
     userReachedGemCap () {
       return this.user.purchased.plan.customerId
-        && this.user.purchased.plan.gemsBought >= this.user.purchased.plan.consecutive.gemCapExtra + this.planGemLimits.convCap;
+        && this.user.purchased.plan.gemsBought
+        >= (this.user.purchased.plan.consecutive.gemCapExtra + this.planGemLimits.convCap);
     },
   },
   watch: {
diff --git a/website/client/src/components/payments/sendGemsModal.vue b/website/client/src/components/payments/sendGemsModal.vue
index 8258f28cc6..cf16303504 100644
--- a/website/client/src/components/payments/sendGemsModal.vue
+++ b/website/client/src/components/payments/sendGemsModal.vue
@@ -78,11 +78,14 @@
           <div class="row">
             <div class="col-md-12">
               <div class="form-group">
+                <!-- eslint-disable vue/no-use-v-if-with-v-for -->
                 <div
                   v-for="block in subscriptionBlocks"
                   v-if="block.target !== 'group' && block.canSubscribe === true"
+                  :key="block.key"
                   class="radio"
                 >
+                  <!-- eslint-disable vue/no-use-v-if-with-v-for -->
                   <label>
                     <input
                       v-model="gift.subscription.key"
diff --git a/website/client/src/components/payments/successModal.vue b/website/client/src/components/payments/successModal.vue
index eb5977ac97..c2c04c410f 100644
--- a/website/client/src/components/payments/successModal.vue
+++ b/website/client/src/components/payments/successModal.vue
@@ -38,7 +38,8 @@
           </div>
         </template>
         <template
-          v-if="paymentData.paymentType === 'gift-gems' || paymentData.paymentType === 'gift-gems-balance'"
+          v-if="paymentData.paymentType === 'gift-gems'
+            || paymentData.paymentType === 'gift-gems-balance'"
         >
           <span v-html="$t('paymentYouSentGems', {name: paymentData.giftReceiver})"></span>
           <div class="details-block gems">
@@ -52,29 +53,34 @@
         </template>
         <template v-if="paymentData.paymentType === 'gift-subscription'">
           <span
-            v-html="$t('paymentYouSentSubscription', {name: paymentData.giftReceiver, months: paymentData.subscription.months})"
+            v-html="$t('paymentYouSentSubscription', {
+              name: paymentData.giftReceiver, months: paymentData.subscription.months})"
           ></span>
         </template>
         <template v-if="paymentData.paymentType === 'subscription'">
           <strong v-once>{{ $t('nowSubscribed') }}</strong>
           <div class="details-block">
             <span
-              v-html="$t('paymentSubBilling', {amount: paymentData.subscription.price, months: paymentData.subscription.months})"
+              v-html="$t('paymentSubBilling', {
+                amount: paymentData.subscription.price, months: paymentData.subscription.months})"
             ></span>
           </div>
         </template>
         <template v-if="paymentData.paymentType === 'groupPlan'">
           <span
-            v-html="$t(paymentData.newGroup ? 'groupPlanCreated' : 'groupPlanUpgraded', {groupName: paymentData.group.name})"
+            v-html="$t(paymentData.newGroup
+              ? 'groupPlanCreated' : 'groupPlanUpgraded', {groupName: paymentData.group.name})"
           ></span>
           <div class="details-block">
             <span
-              v-html="$t('paymentSubBilling', {amount: groupPlanCost, months: paymentData.subscription.months})"
+              v-html="$t('paymentSubBilling', {
+                amount: groupPlanCost, months: paymentData.subscription.months})"
             ></span>
           </div>
         </template>
         <template
-          v-if="paymentData.paymentType === 'groupPlan' || paymentData.paymentType === 'subscription'"
+          v-if="paymentData.paymentType === 'groupPlan'
+            || paymentData.paymentType === 'subscription'"
         >
           <span
             v-once
diff --git a/website/client/src/components/settings/api.vue b/website/client/src/components/settings/api.vue
index 7e4958109f..6572961729 100644
--- a/website/client/src/components/settings/api.vue
+++ b/website/client/src/components/settings/api.vue
@@ -68,7 +68,10 @@
           </tr>
         </thead>
         <tbody>
-          <tr v-for="(webhook, index) in user.webhooks">
+          <tr
+            v-for="(webhook, index) in user.webhooks"
+            :key="webhook.id"
+          >
             <td>
               <input
                 v-model="webhook.enabled"
diff --git a/website/client/src/components/settings/notifications.vue b/website/client/src/components/settings/notifications.vue
index 367b7670ee..29017b4899 100644
--- a/website/client/src/components/settings/notifications.vue
+++ b/website/client/src/components/settings/notifications.vue
@@ -38,7 +38,10 @@
           <span>{{ $t('push') }}</span>
         </th>
       </tr>
-      <tr v-for="notification in notificationsIds">
+      <tr
+        v-for="notification in notificationsIds"
+        :key="notification"
+      >
         <td>
           <span>{{ $t(notification) }}</span>
         </td>
diff --git a/website/client/src/components/settings/restoreModal.vue b/website/client/src/components/settings/restoreModal.vue
index c5d7fd1222..2d5dc83be9 100644
--- a/website/client/src/components/settings/restoreModal.vue
+++ b/website/client/src/components/settings/restoreModal.vue
@@ -50,7 +50,8 @@
             data-for="stats.gp"
           >
         </div>
-        <!--input.form-control(type='number', step="any", data-for='stats.gp', v-model='restoreValues.stats.gp',disabled)-->
+        <!--input.form-control(type='number',
+         step="any", data-for='stats.gp', v-model='restoreValues.stats.gp',disabled)-->
       </div>
       <div class="form-group row">
         <div class="col-sm-3">
diff --git a/website/client/src/components/settings/site.vue b/website/client/src/components/settings/site.vue
index f258f1786f..b63f964f31 100644
--- a/website/client/src/components/settings/site.vue
+++ b/website/client/src/components/settings/site.vue
@@ -16,6 +16,7 @@
         >
           <option
             v-for="lang in availableLanguages"
+            :key="lang.code"
             :value="lang.code"
           >
             {{ lang.name }}
@@ -37,6 +38,7 @@
         >
           <option
             v-for="dateFormat in availableFormats"
+            :key="dateFormat"
             :value="dateFormat"
           >
             {{ dateFormat }}
@@ -54,6 +56,7 @@
           >
             <option
               v-for="sound in availableAudioThemes"
+              :key="sound"
               :value="sound"
             >
               {{ $t(`audioTheme_${sound}`) }}
@@ -217,6 +220,7 @@
                 >
                   <option
                     v-for="option in dayStartOptions"
+                    :key="option.value"
                     :value="option.value"
                   >
                     {{ option.name }}
@@ -252,7 +256,10 @@
       <div class="panel-body">
         <div>
           <ul class="list-inline">
-            <li v-for="network in SOCIAL_AUTH_NETWORKS">
+            <li
+              v-for="network in SOCIAL_AUTH_NETWORKS"
+              :key="network.key"
+            >
               <button
                 v-if="!user.auth[network.key].id"
                 class="btn btn-primary mb-2"
@@ -343,6 +350,7 @@
               >
                 <div
                   v-for="issue in displayNameIssues"
+                  :key="issue"
                   class="input-error"
                 >
                   {{ issue }}
@@ -390,6 +398,7 @@
               >
               <div
                 v-for="issue in usernameIssues"
+                :key="issue"
                 class="input-error"
               >
                 {{ issue }}
@@ -754,10 +763,10 @@ export default {
         return true;
       }
 
-      return find(this.SOCIAL_AUTH_NETWORKS, network => {
+      return this.SOCIAL_AUTH_NETWORKS.find(network => {
         if (network.key !== networkKeyToCheck) {
           if (this.user.auth[network.key]) {
-            return this.user.auth[network.key].id;
+            return !!this.user.auth[network.key].id;
           }
         }
 
diff --git a/website/client/src/components/settings/subscription.vue b/website/client/src/components/settings/subscription.vue
index e7c5a0b626..0938bff3b8 100644
--- a/website/client/src/components/settings/subscription.vue
+++ b/website/client/src/components/settings/subscription.vue
@@ -103,9 +103,9 @@
               <span class="glyphicon glyphicon-forward"></span>
               &nbsp; {{ $t('consecutiveSubscription') }}
               <ul class="list-unstyled">
-                <li>{{ $t('consecutiveMonths') }} {{ user.purchased.plan.consecutive.count + user.purchased.plan.consecutive.offset }}</li>
+                <li>{{ $t('consecutiveMonths') }} {{ user.purchased.plan.consecutive.count + user.purchased.plan.consecutive.offset }}</li> <!-- eslint-disable-line max-len -->
                 <li>{{ $t('gemCapExtra') }} {{ user.purchased.plan.consecutive.gemCapExtra }}</li>
-                <li>{{ $t('mysticHourglasses') }} {{ user.purchased.plan.consecutive.trinkets }}</li>
+                <li>{{ $t('mysticHourglasses') }} {{ user.purchased.plan.consecutive.trinkets }}</li> <!-- eslint-disable-line max-len -->
               </ul>
             </td>
           </tr>
@@ -115,11 +115,14 @@
             {{ $t("resubscribe") }}
           </h4>
           <div class="form-group reduce-top-margin">
+            <!-- eslint-disable vue/no-use-v-if-with-v-for -->
             <div
               v-for="block in subscriptionBlocksOrdered"
               v-if="block.target !== 'group' && block.canSubscribe === true"
+              :key="block.key"
               class="radio"
             >
+              <!-- eslint-enable vue/no-use-v-if-with-v-for -->
               <label>
                 <input
                   v-model="subscription.key"
@@ -207,7 +210,8 @@
             </button>
             <amazon-button
               class="payment-item"
-              :amazon-data="{type: 'subscription', subscription: this.subscription.key, coupon: this.subscription.coupon}"
+              :amazon-data="{
+                type: 'subscription', subscription: subscription.key, coupon: subscription.coupon}"
             />
           </div>
         </div>
diff --git a/website/client/src/components/settings/usernameForm.vue b/website/client/src/components/settings/usernameForm.vue
index 6feeeff868..39694749e9 100644
--- a/website/client/src/components/settings/usernameForm.vue
+++ b/website/client/src/components/settings/usernameForm.vue
@@ -13,7 +13,9 @@
             class="form-control"
             type="text"
             :placeholder="$t('newDisplayName')"
-            :class="{'is-invalid input-invalid': displayNameInvalid, 'input-valid': displayNameValid, 'text-darker': temporaryDisplayName.length > 0}"
+            :class="{
+              'is-invalid input-invalid': displayNameInvalid,
+              'input-valid': displayNameValid, 'text-darker': temporaryDisplayName.length > 0}"
             @blur="restoreEmptyDisplayName()"
           >
         </div>
@@ -25,6 +27,7 @@
     >
       <div
         v-for="issue in displayNameIssues"
+        :key="issue"
         class="input-error text-center"
       >
         {{ issue }}
@@ -45,7 +48,9 @@
               class="form-control"
               type="text"
               :placeholder="$t('newUsername')"
-              :class="{'is-invalid input-invalid': usernameInvalid, 'input-valid': usernameValid, 'text-darker': temporaryUsername.length > 0}"
+              :class="{
+                'is-invalid input-invalid': usernameInvalid,
+                'input-valid': usernameValid, 'text-darker': temporaryUsername.length > 0}"
               @blur="restoreEmptyUsername()"
             >
           </div>
@@ -58,6 +63,7 @@
     >
       <div
         v-for="issue in usernameIssues"
+        :key="issue"
         class="input-error text-center"
       >
         {{ issue }}
diff --git a/website/client/src/components/shared/inventoryDrawer.vue b/website/client/src/components/shared/inventoryDrawer.vue
index eabf0e49c6..1b4b945543 100644
--- a/website/client/src/components/shared/inventoryDrawer.vue
+++ b/website/client/src/components/shared/inventoryDrawer.vue
@@ -65,16 +65,12 @@ import { mapState } from '@/libs/store';
 import inventoryUtils from '@/mixins/inventoryUtils';
 import svgInformation from '@/assets/svg/information.svg';
 
-import CountBadge from '@/components/ui/countBadge';
-import Item from '@/components/inventory/item';
 import Drawer from '@/components/ui/drawer';
 import DrawerSlider from '@/components/ui/drawerSlider';
 import DrawerHeaderTabs from '@/components/ui/drawerHeaderTabs';
 
 export default {
   components: {
-    Item,
-    CountBadge,
     Drawer,
     DrawerSlider,
     DrawerHeaderTabs,
diff --git a/website/client/src/components/shops/_currencyMixin.js b/website/client/src/components/shops/_currencyMixin.js
index b582eb09c1..dce5a5d343 100644
--- a/website/client/src/components/shops/_currencyMixin.js
+++ b/website/client/src/components/shops/_currencyMixin.js
@@ -11,8 +11,8 @@ export default {
     }),
   },
   methods: {
-    enoughCurrency (currency, amount) {
-      switch (currency) {
+    enoughCurrency (currency, amount) { // eslint-disable-line consistent-return
+      switch (currency) { // eslint-disable-line default-case
         case 'gold':
           return this.userGold >= amount;
         case 'gems':
diff --git a/website/client/src/components/shops/buyModal.vue b/website/client/src/components/shops/buyModal.vue
index 31a89af145..f5ec03c197 100644
--- a/website/client/src/components/shops/buyModal.vue
+++ b/website/client/src/components/shops/buyModal.vue
@@ -123,7 +123,8 @@
           {{ $t('notEnoughGemsToBuy') }}
         </div>
         <button
-          v-if="getPriceClass() === 'gems' && !this.enoughCurrency(getPriceClass(), item.value * selectedAmountToBuy)"
+          v-if="getPriceClass() === 'gems'
+            && !enoughCurrency(getPriceClass(), item.value * selectedAmountToBuy)"
           class="btn btn-primary"
           @click="purchaseGems()"
         >
@@ -132,8 +133,10 @@
         <button
           v-else
           class="btn btn-primary"
-          :disabled="item.key === 'gem' && gemsLeft === 0 || attemptingToPurchaseMoreGemsThanAreLeft || numberInvalid"
-          :class="{'notEnough': !preventHealthPotion || !this.enoughCurrency(getPriceClass(), item.value * selectedAmountToBuy)}"
+          :disabled="item.key === 'gem' && gemsLeft === 0 ||
+            attemptingToPurchaseMoreGemsThanAreLeft || numberInvalid"
+          :class="{'notEnough': !preventHealthPotion ||
+            !enoughCurrency(getPriceClass(), item.value * selectedAmountToBuy)}"
           @click="buyItem()"
         >
           {{ $t('buyNow') }}
@@ -406,6 +409,21 @@ export default {
     Avatar,
   },
   mixins: [buyMixin, currencyMixin, notifications, numberInvalid, spellsMixin],
+  props: {
+    item: {
+      type: Object,
+    },
+    priceType: {
+      type: String,
+    },
+    withPin: {
+      type: Boolean,
+    },
+    genericPurchase: {
+      type: Boolean,
+      default: true,
+    },
+  },
   data () {
     return {
       icons: Object.freeze({
@@ -595,20 +613,5 @@ export default {
       return {};
     },
   },
-  props: {
-    item: {
-      type: Object,
-    },
-    priceType: {
-      type: String,
-    },
-    withPin: {
-      type: Boolean,
-    },
-    genericPurchase: {
-      type: Boolean,
-      default: true,
-    },
-  },
 };
 </script>
diff --git a/website/client/src/components/shops/market/index.vue b/website/client/src/components/shops/market/index.vue
index c083000fbb..cb660cbf72 100644
--- a/website/client/src/components/shops/market/index.vue
+++ b/website/client/src/components/shops/market/index.vue
@@ -52,10 +52,13 @@
           </filter-dropdown>
         </div>
       </layout-section>
+      <!-- eslint-disable vue/no-use-v-if-with-v-for -->
       <div
         v-for="category in categories"
         v-if="!anyFilterSelected || viewOptions[category.identifier].selected"
+        :key="category.identifier"
       >
+        <!-- eslint-disable vue/no-use-v-if-with-v-for -->
         <h4>{{ category.text }}</h4>
         <category-row
           :hide-pinned="hidePinned"
@@ -160,14 +163,11 @@ import _map from 'lodash/map';
 import _throttle from 'lodash/throttle';
 import { mapState } from '@/libs/store';
 
-import ShopItem from '../shopItem';
 import KeysToKennel from './keysToKennel';
 import EquipmentSection from './equipmentSection';
 import CategoryRow from './categoryRow';
 import Item from '@/components/inventory/item';
 import CountBadge from '@/components/ui/countBadge';
-import ItemRows from '@/components/ui/itemRows';
-import Avatar from '@/components/avatar';
 import InventoryDrawer from '@/components/shared/inventoryDrawer';
 import FeaturedItemsHeader from '../featuredItemsHeader';
 import PageLayout from '@/components/ui/pageLayout';
@@ -176,8 +176,6 @@ import FilterDropdown from '@/components/ui/filterDropdown';
 import MarketFilter from './filter';
 
 import SellModal from './sellModal.vue';
-import EquipmentAttributesGrid from '../../inventory/equipment/attributesGrid.vue';
-import SelectMembersModal from '@/components/selectMembersModal.vue';
 
 import svgPin from '@/assets/svg/pin.svg';
 import svgGem from '@/assets/svg/gem.svg';
@@ -197,16 +195,11 @@ const sortItems = ['AZ', 'sortByNumber'].map(g => ({ id: g }));
 
 export default {
   components: {
-    ShopItem,
     KeysToKennel,
     Item,
     CountBadge,
 
-    ItemRows,
-
     SellModal,
-    EquipmentAttributesGrid,
-    Avatar,
 
     InventoryDrawer,
     FeaturedItemsHeader,
@@ -216,8 +209,6 @@ export default {
     EquipmentSection,
     CategoryRow,
     MarketFilter,
-
-    SelectMembersModal,
   },
   mixins: [notifications, buyMixin, currencyMixin, inventoryUtils, pinUtils],
   data () {
diff --git a/website/client/src/components/shops/quests/buyQuestModal.vue b/website/client/src/components/shops/quests/buyQuestModal.vue
index 173840f92f..b4e3c7492c 100644
--- a/website/client/src/components/shops/quests/buyQuestModal.vue
+++ b/website/client/src/components/shops/quests/buyQuestModal.vue
@@ -52,7 +52,8 @@
           >{{ item.value }}</span>
         </div>
         <button
-          v-if="priceType === 'gems' && !this.enoughCurrency(priceType, item.value * selectedAmountToBuy)"
+          v-if="priceType === 'gems'
+            && !enoughCurrency(priceType, item.value * selectedAmountToBuy)"
           class="btn btn-primary"
           @click="purchaseGems()"
         >
@@ -61,7 +62,7 @@
         <button
           v-else
           class="btn btn-primary"
-          :class="{'notEnough': !this.enoughCurrency(priceType, item.value * selectedAmountToBuy)}"
+          :class="{'notEnough': !enoughCurrency(priceType, item.value * selectedAmountToBuy)}"
           :disabled="numberInvalid"
           @click="buyItem()"
         >
@@ -247,7 +248,6 @@ import svgHourglasses from '@/assets/svg/hourglass.svg';
 
 import BalanceInfo from '../balanceInfo.vue';
 import currencyMixin from '../_currencyMixin';
-import QuestInfo from './questInfo.vue';
 import notifications from '@/mixins/notifications';
 import buyMixin from '@/mixins/buy';
 import numberInvalid from '@/mixins/numberInvalid';
@@ -258,7 +258,6 @@ import questDialogContent from './questDialogContent';
 export default {
   components: {
     BalanceInfo,
-    QuestInfo,
     questDialogDrops,
     questDialogContent,
   },
diff --git a/website/client/src/components/shops/quests/index.vue b/website/client/src/components/shops/quests/index.vue
index 806006fc71..0612d29869 100644
--- a/website/client/src/components/shops/quests/index.vue
+++ b/website/client/src/components/shops/quests/index.vue
@@ -139,13 +139,17 @@
           </b-dropdown>
         </div>
       </div>
+      <!-- eslint-disable vue/no-use-v-if-with-v-for -->
       <div
         v-for="category in categories"
         v-if="!anyFilterSelected || viewOptions[category.identifier].selected"
+        :key="category.identifier"
       >
+        <!-- eslint-enable vue/no-use-v-if-with-v-for -->
         <h2 class="mb-3">
           {{ category.text }}
         </h2>
+        <!-- eslint-disable max-len -->
         <itemRows
           v-if="category.identifier === 'pet'"
           :items="questItems(category, selectedSortItemsBy, searchTextThrottled, hideLocked, hidePinned)"
@@ -153,6 +157,7 @@
           :item-margin="24"
           :type="'pet_quests'"
         >
+          <!-- eslint-enable max-len -->
           <template
             slot="item"
             slot-scope="ctx"
@@ -201,11 +206,14 @@
           v-else-if="category.identifier === 'unlockable' || category.identifier === 'gold'"
           class="grouped-parent"
         >
+          <!-- eslint-disable vue/no-use-v-if-with-v-for, max-len -->
           <div
-            v-for="(items, key) in getGrouped(questItems(category, selectedSortItemsBy, searchTextThrottled, hideLocked, hidePinned))"
+            v-for="(items, key) in getGrouped(questItems(category, selectedSortItemsBy,searchTextThrottled, hideLocked, hidePinned))"
             v-if="key !== 'questGroupEarnable'"
+            :key="key"
             class="group"
           >
+            <!-- eslint-enable vue/no-use-v-if-with-v-for, max-len -->
             <h3>{{ $t(key) }}</h3>
             <div class="items">
               <shopItem
@@ -233,9 +241,11 @@
                       class="popover-content-text"
                     >{{ `${$t('questUnlockLostMasterclasser')}` }}</div>
                     <div
-                      v-if="item.locked && item.unlockCondition && item.unlockCondition.incentiveThreshold"
+                      v-if="item.locked && item.unlockCondition
+                        && item.unlockCondition.incentiveThreshold"
                       class="popover-content-text"
-                    >{{ `${$t('loginIncentiveQuest', {count: item.unlockCondition.incentiveThreshold})}` }}</div>
+                    >{{ `${$t('loginIncentiveQuest', {
+                      count: item.unlockCondition.incentiveThreshold})}` }}</div>
                     <div
                       v-if="item.locked && item.previous && isBuyingDependentOnPrevious(item)"
                       class="popover-content-text"
@@ -278,7 +288,8 @@
           class="items"
         >
           <shopItem
-            v-for="item in questItems(category, selectedSortItemsBy, searchTextThrottled, hideLocked, hidePinned)"
+            v-for="item in questItems(category, selectedSortItemsBy,
+                                      searchTextThrottled, hideLocked, hidePinned)"
             :key="item.key"
             :item="item"
             :price="item.value"
@@ -484,7 +495,6 @@ import Item from '@/components/inventory/item';
 import CountBadge from '@/components/ui/countBadge';
 import ItemRows from '@/components/ui/itemRows';
 import toggleSwitch from '@/components/ui/toggleSwitch';
-import Avatar from '@/components/avatar';
 import buyMixin from '@/mixins/buy';
 import pinUtils from '@/mixins/pinUtils';
 import currencyMixin from '../_currencyMixin';
@@ -507,7 +517,6 @@ export default {
     ItemRows,
     toggleSwitch,
 
-    Avatar,
     BuyModal,
     QuestInfo,
   },
diff --git a/website/client/src/components/shops/quests/questDialogDrops.vue b/website/client/src/components/shops/quests/questDialogDrops.vue
index 7ec7a7ef3f..7b198395e3 100644
--- a/website/client/src/components/shops/quests/questDialogDrops.vue
+++ b/website/client/src/components/shops/quests/questDialogDrops.vue
@@ -25,6 +25,7 @@
     </div>
     <div
       v-for="drop in getDropsList(item.drop.items, false)"
+      :key="drop.key"
       class="reward-item"
     >
       <span class="icon">
@@ -46,6 +47,7 @@
     </h3>
     <div
       v-for="drop in getDropsList(item.drop.items, true)"
+      :key="drop.key"
       class="reward-item"
     >
       <span class="icon">
diff --git a/website/client/src/components/shops/quests/questInfo.vue b/website/client/src/components/shops/quests/questInfo.vue
index ed06541e51..002abd93a3 100644
--- a/website/client/src/components/shops/quests/questInfo.vue
+++ b/website/client/src/components/shops/quests/questInfo.vue
@@ -9,7 +9,10 @@
     >
       <dt>{{ $t('collect') + ':' }}</dt>
       <dd>
-        <div v-for="(collect, key) of quest.collect">
+        <div
+          v-for="(collect, key) of quest.collect"
+          :key="key"
+        >
           <span>{{ collect.count }} {{ getCollectText(collect) }}</span>
         </div>
       </dd>
@@ -26,6 +29,7 @@
       <dd>
         <div
           v-for="star of stars()"
+          :key="star"
           class="svg-icon inline"
           :class="smallVersion ? 'icon-12' : 'icon-16'"
           v-html="icons[star]"
diff --git a/website/client/src/components/shops/seasonal/index.vue b/website/client/src/components/shops/seasonal/index.vue
index 351eeeb7d3..d092a4db85 100644
--- a/website/client/src/components/shops/seasonal/index.vue
+++ b/website/client/src/components/shops/seasonal/index.vue
@@ -139,7 +139,10 @@
           </b-dropdown>
         </div>
       </div>
-      <div v-for="(groupSets, categoryGroup) in getGroupedCategories(categories)">
+      <div
+        v-for="(groupSets, categoryGroup) in getGroupedCategories(categories)"
+        :key="categoryGroup"
+      >
         <h3
           v-if="categoryGroup !== 'spells' && categoryGroup !== 'quests'"
           class="classgroup"
@@ -156,10 +159,12 @@
         <div class="grouped-parent">
           <div
             v-for="category in groupSets"
+            :key="category.identifier"
             class="group"
           >
             <h3>{{ category.text }}</h3>
             <div class="items">
+              <!-- eslint-disable max-len -->
               <shopItem
                 v-for="item in seasonalItems(category, selectedSortItemsBy, searchTextThrottled, viewOptions, hidePinned)"
                 :key="item.key"
@@ -170,6 +175,7 @@
                 :show-event-badge="false"
                 @click="itemSelected(item)"
               >
+                <!-- eslint-enable max-len -->
                 <template
                   slot="itemBadge"
                   slot-scope="ctx"
@@ -194,6 +200,7 @@
   </div>
 </template>
 
+<!-- eslint-disable max-len -->
 <style lang="scss">
   @import '~@/assets/scss/colors.scss';
   @import '~@/assets/scss/variables.scss';
@@ -366,6 +373,7 @@
     }
   }
 </style>
+<!-- eslint-enable max-len -->
 
 <style scoped>
   .margin-center {
@@ -385,12 +393,8 @@ import _reverse from 'lodash/reverse';
 import { mapState } from '@/libs/store';
 
 import ShopItem from '../shopItem';
-import Item from '@/components/inventory/item';
-import CountBadge from '@/components/ui/countBadge';
-import ItemRows from '@/components/ui/itemRows';
 import Checkbox from '@/components/ui/checkbox';
 import toggleSwitch from '@/components/ui/toggleSwitch';
-import Avatar from '@/components/avatar';
 import buyMixin from '@/mixins/buy';
 import currencyMixin from '../_currencyMixin';
 import pinUtils from '@/mixins/pinUtils';
@@ -412,13 +416,8 @@ import shops from '@/../../common/script/libs/shops';
 export default {
   components: {
     ShopItem,
-    Item,
-    CountBadge,
-    ItemRows,
     toggleSwitch,
     Checkbox,
-
-    Avatar,
   },
   mixins: [buyMixin, currencyMixin, pinUtils],
   data () {
diff --git a/website/client/src/components/shops/timeTravelers/index.vue b/website/client/src/components/shops/timeTravelers/index.vue
index 4b452346f4..b399ecbd65 100644
--- a/website/client/src/components/shops/timeTravelers/index.vue
+++ b/website/client/src/components/shops/timeTravelers/index.vue
@@ -92,11 +92,15 @@
             </b-dropdown-item>
           </b-dropdown>
         </div>
-      </div><div
+      </div>
+      <!-- eslint-disable vue/no-use-v-if-with-v-for -->
+      <div
         v-for="category in categories"
         v-if="!anyFilterSelected || (!closed && viewOptions[category.identifier].selected)"
+        :key="category.identifier"
         :class="category.identifier"
       >
+        <!-- eslint-enable vue/no-use-v-if-with-v-for -->
         <h2 class="mb-3">
           {{ category.text }}
         </h2><itemRows
@@ -121,11 +125,15 @@
                 v-if="category !== 'quests'"
                 slot="popoverContent"
                 slot-scope="ctx"
-              ><div><h4 class="popover-content-title">{{ ctx.item.text }}</h4></div></span><span
+              ><div><h4 class="popover-content-title">{{ ctx.item.text }}</h4></div></span>
+              <span
                 v-if="category === 'quests'"
                 slot="popoverContent"
-                slot-scope="ctx"
-              ><div class="questPopover"><h4 class="popover-content-title">{{ item.text }}</h4><questInfo :quest="item" /></div></span><template
+              ><div class="questPopover">
+                <h4 class="popover-content-title">{{ item.text }}</h4>
+                <questInfo :quest="item" />
+              </div></span>
+              <template
                 slot="itemBadge"
                 slot-scope="ctx"
               >
@@ -164,6 +172,7 @@
   </div>
 </template>
 
+<!-- eslint-disable max-len -->
 <style lang="scss">
   @import '~@/assets/scss/colors.scss';
   @import '~@/assets/scss/variables.scss';
@@ -297,7 +306,7 @@
 
   }
 </style>
-
+<!-- eslint-enable max-len -->
 
 <script>
 import _filter from 'lodash/filter';
@@ -309,13 +318,10 @@ import { mapState } from '@/libs/store';
 
 import ShopItem from '../shopItem';
 import Item from '@/components/inventory/item';
-import CountBadge from '@/components/ui/countBadge';
 import ItemRows from '@/components/ui/itemRows';
 import toggleSwitch from '@/components/ui/toggleSwitch';
-import Avatar from '@/components/avatar';
 import QuestInfo from '../quests/questInfo.vue';
 
-import BuyModal from '../buyModal.vue';
 import BuyQuestModal from '../quests/buyQuestModal.vue';
 
 import svgPin from '@/assets/svg/pin.svg';
@@ -331,13 +337,10 @@ export default {
   components: {
     ShopItem,
     Item,
-    CountBadge,
     ItemRows,
     toggleSwitch,
     QuestInfo,
 
-    Avatar,
-    BuyModal,
     BuyQuestModal,
   },
   mixins: [pinUtils],
diff --git a/website/client/src/components/static/communityGuidelines.vue b/website/client/src/components/static/communityGuidelines.vue
index b173279eff..db0d72a1e6 100644
--- a/website/client/src/components/static/communityGuidelines.vue
+++ b/website/client/src/components/static/communityGuidelines.vue
@@ -186,8 +186,17 @@
         <ul>
           <li>{{ $t('commGuideAKA', {habitName: 'Beffymaroo', realName: 'Beth'}) }}</li>
           <li>{{ $t('commGuideAKA', {habitName: 'Viirus', realName: 'Phillip'}) }}</li>
-          <li>{{ $t('commGuideAKA', {habitName: 'redphoenix', realName: 'Vicky'}) }} ({{ $t('commGuideOnTrello', {trelloName: 'caffeinatedvee'}) }}, {{ $t('commGuideOnGitHub', {gitHubName: 'veeeeeee'}) }})</li>
-          <li>{{ $t('commGuideAKA', {habitName: 'Lemoness', realName: 'Leslie'}) }} ({{ $t('commGuideOnTrello', {trelloName: 'lemonesstree'}) }})</li>
+          <li>
+            {{ $t('commGuideAKA', {
+              habitName: 'redphoenix', realName: 'Vicky'}) }} ({{ $t('commGuideOnTrello', {
+              trelloName: 'caffeinatedvee'}) }}, {{ $t('commGuideOnGitHub', {
+              gitHubName: 'veeeeeee'}) }})
+          </li>
+          <li>
+            {{ $t('commGuideAKA', {
+              habitName: 'Lemoness', realName: 'Leslie'}) }} ({{ $t('commGuideOnTrello', {
+              trelloName: 'lemonesstree'}) }})
+          </li>
           <li>{{ $t('commGuideAKA', {habitName: 'SabreCat', realName: 'Sabe'}) }}</li>
           <li>{{ $t('commGuideAKA', {habitName: 'paglias', realName: 'Matteo'}) }}</li>
           <li>{{ $t('commGuideAKA', {habitName: 'TheHollidayInn', realName: 'Keith'}) }}</li>
diff --git a/website/client/src/components/static/contact.vue b/website/client/src/components/static/contact.vue
index 29087f2138..d10973d024 100644
--- a/website/client/src/components/static/contact.vue
+++ b/website/client/src/components/static/contact.vue
@@ -18,7 +18,7 @@
             target="_blank"
             href="https://github.com/HabitRPG/habitica/issues?q=is%3Aopen"
           >GitHub</a>
-          <span v-if="this.user">
+          <span v-if="user">
             <br>
             {{ $t('reportCommunityIssues') }}
             &colon;&nbsp;
diff --git a/website/client/src/components/static/groupPlans.vue b/website/client/src/components/static/groupPlans.vue
index c58b17f56b..e2011defe7 100644
--- a/website/client/src/components/static/groupPlans.vue
+++ b/website/client/src/components/static/groupPlans.vue
@@ -249,7 +249,6 @@
 import * as Analytics from '@/libs/analytics';
 import { setup as setupPayments } from '@/libs/payments';
 import amazonPaymentsModal from '@/components/payments/amazonModal';
-import StaticHeader from './header.vue';
 import AuthForm from '../auth/authForm.vue';
 import CreateGroupModalPages from '../group-plans/createGroupModalPages.vue';
 
@@ -257,7 +256,6 @@ import party from '../../assets/images/group-plans-static/party.svg';
 
 export default {
   components: {
-    StaticHeader,
     AuthForm,
     CreateGroupModalPages,
     amazonPaymentsModal,
diff --git a/website/client/src/components/static/home.vue b/website/client/src/components/static/home.vue
index 1f0151d437..ed3cb2d511 100644
--- a/website/client/src/components/static/home.vue
+++ b/website/client/src/components/static/home.vue
@@ -68,10 +68,12 @@
                 :placeholder="$t('username')"
                 :class="{'input-valid': usernameValid, 'input-invalid': usernameInvalid}"
               >
+              <!-- eslint-disable vue/require-v-for-key -->
               <div
                 v-for="issue in usernameIssues"
                 class="input-error"
               >
+                <!-- eslint-enable vue/require-v-for-key -->
                 {{ issue }}
               </div>
               <input
@@ -93,7 +95,9 @@
                 class="form-control"
                 type="password"
                 :placeholder="$t('confirmPassword')"
-                :class="{'input-invalid': passwordConfirmInvalid, 'input-valid': passwordConfirmValid}"
+                :class="{
+                  'input-invalid': passwordConfirmInvalid,
+                  'input-valid': passwordConfirmValid}"
               >
               <p
                 v-once
diff --git a/website/client/src/components/static/merch.vue b/website/client/src/components/static/merch.vue
index d8ea62ea3b..44cef2e0ef 100644
--- a/website/client/src/components/static/merch.vue
+++ b/website/client/src/components/static/merch.vue
@@ -3,9 +3,11 @@
     <div class="row">
       <div class="col-md-6 offset-3">
         <h1>{{ $t('merch') }}</h1>
-        <!-- @TODO: Visual experience: Separate each merch items with new line? Or to show items in a table?-->
+        <!-- @TODO: Visual experience: Separate each
+          merch items with new line? Or to show items in a table?-->
         <div
-          v-for="(merchant, index) in merchants"
+          v-for="(merchant) in merchants"
+          :key="merchant.key"
           class="col-lg-6 col-md-6 col-sm-12"
         >
           <div class="merch-block">
diff --git a/website/client/src/components/static/overview.vue b/website/client/src/components/static/overview.vue
index 6ae4476213..47a8a2ed83 100644
--- a/website/client/src/components/static/overview.vue
+++ b/website/client/src/components/static/overview.vue
@@ -4,13 +4,19 @@
       <div class="col-md-6 offset-3">
         <h1>{{ $t('overview') }}</h1>
         <p>{{ $t('needTips') }}</p>
-        <div v-for="step in stepsNum">
+        <div
+          v-for="step in stepsNum"
+          :key="step"
+        >
           <h3>{{ $t('step'+step) }}</h3>
           <p v-markdown="$t('webStep'+step+'Text', stepVars[step])"></p>
           <hr>
         </div>
         <p
-          v-markdown="$t('overviewQuestions', {faqUrl: '/static/faq/', helpGuildUrl: '/groups/guild/5481ccf3-5d2d-48a9-a871-70a7380cee5a'})"
+          v-markdown="$t('overviewQuestions', {
+            faqUrl: '/static/faq/',
+            helpGuildUrl: '/groups/guild/5481ccf3-5d2d-48a9-a871-70a7380cee5a'
+          })"
         ></p>
       </div>
     </div>
diff --git a/website/client/src/components/static/pressKit.vue b/website/client/src/components/static/pressKit.vue
index 42519ba3b2..d8312a7d14 100644
--- a/website/client/src/components/static/pressKit.vue
+++ b/website/client/src/components/static/pressKit.vue
@@ -8,10 +8,16 @@
         href="/static/presskit/presskit.zip"
       >presskit.zip</a>
     </p>
-    <div v-for="(images, category) in imgs">
+    <div
+      v-for="(images, category) in imgs"
+      :key="category"
+    >
       <h2>{{ $t('pk' + category) }}</h2>
       <div v-if="Array.isArray(images)">
-        <div v-for="img in images">
+        <div
+          v-for="img in images"
+          :key="img"
+        >
           <img
             class="img-fluid img-rendering-auto press-img"
             :src="`/static/presskit/${category}/${img}`"
@@ -19,9 +25,15 @@
         </div>
       </div>
       <div v-else>
-        <div v-for="(images, secondaryCategory) in images">
+        <div
+          v-for="(images, secondaryCategory) in images"
+          :key="secondaryCategory"
+        >
           <h3>{{ $t('pk' + secondaryCategory) }}</h3>
-          <div v-for="img in images">
+          <div
+            v-for="img in images"
+            :key="img"
+          >
             <img
               class="img-fluid img-rendering-auto press-img"
               :src="`/static/presskit/${category}/${secondaryCategory}/${img}`"
@@ -37,6 +49,7 @@
     >
       <div
         v-for="(QA, index) in faq"
+        :key="index"
         class="faq-question"
       >
         <h2
@@ -70,7 +83,7 @@ const PRESS_ENQUIRY_EMAIL = 'admin@habitica.com';
 
 export default {
   data () {
-    return {
+    return Object.freeze({
       PRESS_ENQUIRY_EMAIL,
       imgs: {
         Promo: [
@@ -157,7 +170,7 @@ export default {
           answer: 'pkAnswer8',
         },
       ],
-    };
+    });
   },
 };
 </script>
diff --git a/website/client/src/components/static/privacy.vue b/website/client/src/components/static/privacy.vue
index 2f517bfb16..0a0c138f19 100644
--- a/website/client/src/components/static/privacy.vue
+++ b/website/client/src/components/static/privacy.vue
@@ -1,4 +1,5 @@
 <template>
+  <!-- eslint-disable max-len -->
   <div class="container-fluid">
     <h1>Privacy Policy</h1>
     <p class="pagemeta">
@@ -317,4 +318,5 @@
       <a href="mailto:admin@habitica.com">admin@habitica.com</a>
     </address>
   </div>
+  <!-- eslint-enable max-len -->
 </template>
diff --git a/website/client/src/components/static/staticWrapper.vue b/website/client/src/components/static/staticWrapper.vue
index 8f60a98e6a..89cb9fb77c 100644
--- a/website/client/src/components/static/staticWrapper.vue
+++ b/website/client/src/components/static/staticWrapper.vue
@@ -2,7 +2,10 @@
   <div>
     <static-header
       v-if="showContentWrap"
-      :class="{'home-header': ['home', 'front'].indexOf($route.name) !== -1, 'white-header': this.$route.name === 'plans'}"
+      :class="{
+        'home-header': ['home', 'front'].indexOf($route.name) !== -1,
+        'white-header': this.$route.name === 'plans'
+      }"
     />
     <div class="static-wrapper">
       <router-view />
diff --git a/website/client/src/components/static/terms.vue b/website/client/src/components/static/terms.vue
index 3cd52b1768..6acb5191cb 100644
--- a/website/client/src/components/static/terms.vue
+++ b/website/client/src/components/static/terms.vue
@@ -1,4 +1,5 @@
 <template>
+  <!-- eslint-disable max-len -->
   <div class="container-fluid">
     <h1>Terms of Use</h1>
     <p class="pagemeta">
@@ -599,4 +600,5 @@
       <a href="mailto:admin@habitica.com">admin@habitica.com</a>
     </p>
   </div>
+  <!-- eslint-enable max-len -->
 </template>
diff --git a/website/client/src/components/tasks/approvalFooter.vue b/website/client/src/components/tasks/approvalFooter.vue
index aa1505bc53..1585dd0f44 100644
--- a/website/client/src/components/tasks/approvalFooter.vue
+++ b/website/client/src/components/tasks/approvalFooter.vue
@@ -47,7 +47,7 @@
   </div>
 </template>
 
-<style lang="scss", scoped>
+<style lang="scss" scoped>
   @import '~@/assets/scss/colors.scss';
   .claim-bottom-message {
     background-color: $gray-700;
diff --git a/website/client/src/components/tasks/approvalModal.vue b/website/client/src/components/tasks/approvalModal.vue
index 72e0193afc..4bcd60cd05 100644
--- a/website/client/src/components/tasks/approvalModal.vue
+++ b/website/client/src/components/tasks/approvalModal.vue
@@ -6,6 +6,7 @@
     :hide-footer="true"
   >
     <div class="modal-body">
+      <!-- eslint-disable-next-line vue/require-v-for-key -->
       <div
         v-for="(approval, index) in task.approvals"
         class="row approval"
diff --git a/website/client/src/components/tasks/brokenTaskModal.vue b/website/client/src/components/tasks/brokenTaskModal.vue
index 37b232f8d9..c035d27210 100644
--- a/website/client/src/components/tasks/brokenTaskModal.vue
+++ b/website/client/src/components/tasks/brokenTaskModal.vue
@@ -10,7 +10,8 @@
       class="modal-body"
     >
       <div
-        v-if="brokenChallengeTask.challenge.broken === 'TASK_DELETED' || brokenChallengeTask.challenge.broken === 'CHALLENGE_TASK_NOT_FOUND'"
+        v-if="brokenChallengeTask.challenge.broken === 'TASK_DELETED'
+          || brokenChallengeTask.challenge.broken === 'CHALLENGE_TASK_NOT_FOUND'"
       >
         <h2>{{ $t('brokenTask') }}</h2>
         <div>
@@ -63,7 +64,8 @@
         </div>
       </div>
       <!-- @TODO: I ported this over, but do we use it anymore?-->
-      <!--div(v-if='brokenChallengeTask.challenge.broken === "UNSUBSCRIBED"')p {{ $t('unsubChallenge') }}
+      <!--div(v-if='brokenChallengeTask.challenge.broken
+      === "UNSUBSCRIBED"')p {{ $t('unsubChallenge') }}
 p
   a(@click="unlink('keep-all')") {{ $t('keepThem') }}
   | &nbsp;|&nbsp;
diff --git a/website/client/src/components/tasks/column.vue b/website/client/src/components/tasks/column.vue
index a9e252742b..11a5d0b993 100644
--- a/website/client/src/components/tasks/column.vue
+++ b/website/client/src/components/tasks/column.vue
@@ -24,6 +24,7 @@
       <div class="filters d-flex justify-content-end">
         <div
           v-for="filter in typeFilters"
+          :key="filter"
           class="filter small-text"
           :class="{active: activeFilter.label === filter}"
           @click="activateFilter(type, filter)"
@@ -341,7 +342,7 @@ import {
   getTypeLabel,
   getFilterLabels,
   getActiveFilter,
-} from '@/libs/store/helpers/filterTasks.js';
+} from '@/libs/store/helpers/filterTasks';
 
 import svgPin from '@/assets/svg/pin.svg';
 import habitIcon from '@/assets/svg/habit.svg';
@@ -484,7 +485,11 @@ export default {
           return this.taskList.length;
         } if (this.activeFilter.label === 'all') {
           return this.taskList
-            .reduce((count, t) => (!t.completed && shouldDo(new Date(), t, this.getUserPreferences) ? count + 1 : count), 0);
+            .reduce(
+              (count, t) => (!t.completed
+                && shouldDo(new Date(), t, this.getUserPreferences) ? count + 1 : count),
+              0,
+            );
         }
       }
 
@@ -700,14 +705,15 @@ export default {
         filteredTaskList = taskList.filter(
           task =>
             // eslint rule disabled for block to allow nested binary expression
-            /* eslint-disable no-extra-parens */
+            /* eslint-disable no-extra-parens, implicit-arrow-linebreak, max-len */
             (
               task.text.toLowerCase().indexOf(searchTextLowerCase) > -1
               || (task.notes && task.notes.toLowerCase().indexOf(searchTextLowerCase) > -1)
               || (task.checklist && task.checklist.length > 0
-                && task.checklist.some(checkItem => checkItem.text.toLowerCase().indexOf(searchTextLowerCase) > -1))
+                && task.checklist
+                  .some(checkItem => checkItem.text.toLowerCase().indexOf(searchTextLowerCase) > -1))
             ),
-          /* eslint-enable no-extra-parens */
+          /* eslint-enable no-extra-parens, implicit-arrow-linebreak, max-len */
         );
       }
       return filteredTaskList;
diff --git a/website/client/src/components/tasks/spells.vue b/website/client/src/components/tasks/spells.vue
index d2cb17cc67..66ce7d5381 100644
--- a/website/client/src/components/tasks/spells.vue
+++ b/website/client/src/components/tasks/spells.vue
@@ -35,13 +35,16 @@
         <div slot="drawer-slider">
           <div class="container spell-container">
             <div class="row">
+              <!-- eslint-disable vue/no-use-v-if-with-v-for -->
               <div
                 v-for="(skill, key) in spells[user.stats.class]"
                 v-if="user.stats.lvl >= skill.lvl"
+                :key="key"
                 v-b-popover.hover.auto="skill.notes()"
                 class="col-12 col-md-3"
                 @click="castStart(skill)"
               >
+                <!-- eslint-enable vue/no-use-v-if-with-v-for -->
                 <div class="spell col-12 row">
                   <div class="col-8 details">
                     <a :class="{'disabled': spellDisabled(key)}"></a>
diff --git a/website/client/src/components/tasks/tagsPopup.vue b/website/client/src/components/tasks/tagsPopup.vue
index 16e59b4670..fd813687c8 100644
--- a/website/client/src/components/tasks/tagsPopup.vue
+++ b/website/client/src/components/tasks/tagsPopup.vue
@@ -1,18 +1,21 @@
 <template>
   <div class="tags-popup">
+    <!-- eslint-disable vue/no-use-v-if-with-v-for -->
     <div
       v-for="tagsType in tagsByType"
       v-if="tagsType.tags.length > 0 || tagsType.key === 'tags'"
       :key="tagsType.key"
       class="tags-category d-flex"
     >
+      <!-- eslint-enable vue/no-use-v-if-with-v-for -->
       <div class="tags-header">
         <strong v-once>{{ $t(tagsType.key) }}</strong>
       </div>
       <div class="tags-list container">
         <div class="row">
           <div
-            v-for="(tag, tagIndex) in tagsType.tags"
+            v-for="(tag) in tagsType.tags"
+            :key="tag.id"
             class="col-4"
           >
             <div class="custom-control custom-checkbox">
diff --git a/website/client/src/components/tasks/task.vue b/website/client/src/components/tasks/task.vue
index e37611ba86..3d6232e584 100644
--- a/website/client/src/components/tasks/task.vue
+++ b/website/client/src/components/tasks/task.vue
@@ -18,7 +18,10 @@
         <div
           v-if="task.type === 'habit'"
           class="left-control d-flex align-items-center justify-content-center"
-          :class="[{'control-bottom-box': this.task.group.id, 'control-top-box': approvalsClass}, controlClass.up.bg]"
+          :class="[{
+            'control-bottom-box': task.group.id,
+            'control-top-box': approvalsClass
+          }, controlClass.up.bg]"
         >
           <div
             class="task-control habit-control"
@@ -26,7 +29,7 @@
             @click="(isUser && task.up) ? score('up') : null"
           >
             <div
-              v-if="this.task.group.id && !isUser"
+              v-if="task.group.id && !isUser"
               class="svg-icon lock"
               :class="controlClass.up.icon"
               v-html="icons.lock"
@@ -42,7 +45,9 @@
         <div
           v-if="task.type === 'daily' || task.type === 'todo'"
           class="left-control d-flex justify-content-center"
-          :class="[{'control-bottom-box': this.task.group.id, 'control-top-box': approvalsClass}, controlClass.bg]"
+          :class="[{
+            'control-bottom-box': task.group.id,
+            'control-top-box': approvalsClass}, controlClass.bg]"
         >
           <div
             class="task-control daily-todo-control"
@@ -50,7 +55,7 @@
             @click="isUser ? score(task.completed ? 'down' : 'up') : null"
           >
             <div
-              v-if="this.task.group.id && !isUser && !task.completed"
+              v-if="task.group.id && !isUser && !task.completed"
               class="svg-icon lock"
               :class="controlClass.icon"
               v-html="icons.lock"
@@ -161,7 +166,8 @@
             <div class="d-inline-flex">
               <div
                 v-if="isUser"
-                v-b-tooltip.hover.bottom="$t(`${task.collapseChecklist ? 'expand': 'collapse'}Checklist`)"
+                v-b-tooltip.hover.bottom="$t(`${task.collapseChecklist
+                  ? 'expand': 'collapse'}Checklist`)"
                 class="collapse-checklist d-flex align-items-center expand-toggle"
                 :class="{open: !task.collapseChecklist}"
                 @click="collapseChecklist(task)"
@@ -173,12 +179,15 @@
                 <span>{{ checklistProgress }}</span>
               </div>
             </div>
+            <!-- eslint-disable vue/no-use-v-if-with-v-for -->
             <div
               v-for="item in task.checklist"
               v-if="!task.collapseChecklist"
+              :key="item.id"
               class="custom-control custom-checkbox checklist-item"
               :class="{'checklist-item-done': item.completed}"
             >
+              <!-- eslint-enable vue/no-use-v-if-with-v-for -->
               <input
                 :id="`checklist-${item.id}-${random}`"
                 class="custom-control-input"
@@ -277,6 +286,7 @@
                     </div>
                     <div
                       v-for="tag in getTagsFor(task)"
+                      :key="tag"
                       v-markdown="tag"
                       class="tag-label"
                     ></div>
@@ -290,7 +300,9 @@
         <div
           v-if="task.type === 'habit'"
           class="right-control d-flex align-items-center justify-content-center"
-          :class="[{'control-bottom-box': this.task.group.id, 'control-top-box': approvalsClass}, controlClass.down.bg]"
+          :class="[{
+            'control-bottom-box': task.group.id,
+            'control-top-box': approvalsClass}, controlClass.down.bg]"
         >
           <div
             class="task-control habit-control"
@@ -298,7 +310,7 @@
             @click="(isUser && task.down) ? score('down') : null"
           >
             <div
-              v-if="this.task.group.id && !isUser"
+              v-if="task.group.id && !isUser"
               class="svg-icon lock"
               :class="controlClass.down.icon"
               v-html="icons.lock"
@@ -335,6 +347,7 @@
   </div>
 </template>
 
+<!-- eslint-disable max-len -->
 <style lang="scss" scoped>
   @import '~@/assets/scss/colors.scss';
 
@@ -769,7 +782,7 @@
     }
   }
 </style>
-
+<!-- eslint-enable max-len -->
 
 <script>
 import moment from 'moment';
@@ -992,7 +1005,7 @@ export default {
         return;
       }
 
-      switch (this.task.type) {
+      switch (this.task.type) { // eslint-disable-line default-case
         case 'habit':
           this.$root.$emit('playSound', direction === 'up' ? 'Plus_Habit' : 'Minus_Habit');
           break;
@@ -1010,7 +1023,8 @@ export default {
 
       Analytics.updateUser();
       const response = await axios.post(`/api/v4/tasks/${task._id}/score/${direction}`);
-      const tmp = response.data.data._tmp || {}; // used to notify drops, critical hits and other bonuses
+      // used to notify drops, critical hits and other bonuses
+      const tmp = response.data.data._tmp || {};
       const { crit } = tmp;
       const { drop } = tmp;
       const { quest } = tmp;
@@ -1025,7 +1039,7 @@ export default {
         if (quest.progressDelta && userQuest.boss) {
           this.quest('questDamage', quest.progressDelta.toFixed(1));
         } else if (quest.collection && userQuest.collect) {
-          user.party.quest.progress.collectedItems++;
+          user.party.quest.progress.collectedItems += 1;
           this.quest('questCollection', quest.collection);
         }
       }
@@ -1052,7 +1066,7 @@ export default {
           if (!user.items[type][drop.key]) {
             Vue.set(user, `items.${type}.${drop.key}`, 0);
           }
-          user.items[type][drop.key]++;
+          user.items[type][drop.key] += 1;
         }
 
         if (drop.type === 'HatchingPotion') {
diff --git a/website/client/src/components/tasks/taskModal.vue b/website/client/src/components/tasks/taskModal.vue
index 0db09c94f1..be135b38fe 100644
--- a/website/client/src/components/tasks/taskModal.vue
+++ b/website/client/src/components/tasks/taskModal.vue
@@ -113,6 +113,7 @@
           >
             <div
               v-for="(item, $index) in checklist"
+              :key="item.id"
               class="inline-edit-input-group checklist-group input-group"
             >
               <span class="grippy"></span>
@@ -455,6 +456,7 @@
                 >
                   <div
                     v-for="tagName in truncatedSelectedTags"
+                    :key="tagName"
                     v-markdown="tagName"
                     class="category-label"
                     :title="tagName"
@@ -512,7 +514,8 @@
               :text="$t(sharedCompletion)"
             >
               <b-dropdown-item
-                v-for="completionOption in ['recurringCompletion', 'singleCompletion', 'allAssignedCompletion']"
+                v-for="completionOption in [
+                  'recurringCompletion', 'singleCompletion', 'allAssignedCompletion']"
                 :key="completionOption"
                 :class="{active: sharedCompletion === completionOption}"
                 @click="sharedCompletion = completionOption"
@@ -541,6 +544,7 @@
                 >
                   <span
                     v-for="memberId in assignedMembers"
+                    :key="memberId"
                     class="mr-1"
                   >{{ memberNamesById[memberId] }}</span>
                 </span>
@@ -640,7 +644,8 @@
                 </div>
               </div>
               <div
-                v-if="task.type === 'habit' && isUserTask && purpose === 'edit' && (task.up || task.down)"
+                v-if="task.type === 'habit'
+                  && isUserTask && purpose === 'edit' && (task.up || task.down)"
                 class="option"
               >
                 <div class="form-group">
@@ -692,11 +697,17 @@
               <!--.option(v-if="isUserTask && task.type !== 'reward'").form-group
   label(v-once)
     span.float-left {{ $t('attributeAllocation') }}
-    .svg-icon.info-icon(v-html="icons.information", v-b-tooltip.hover.righttop.html="$t('attributeAllocationHelp')")
+    .svg-icon.info-icon(v-html="ic
+    ons.information", v-b-tooltip.hover.righttop.html="$t('attributeAllocationHelp')")
   .attributes
-    .custom-control.custom-radio.custom-control-inline(v-for="attr in ATTRIBUTES", :key="attr")
-      input.custom-control-input(:id="`attribute-${attr}`", type="radio", :value="attr", v-model="task.attribute", :disabled="user.preferences.allocationMode !== 'taskbased'")
-              label.custom-control-label.attr-description(:for="`attribute-${attr}`", v-once, v-b-popover.hover="$t(`${attr}Text`)") {{ $t(attributesStrings[attr]) }}-->
+    .custom-control.custom-radio.custom-
+    control-inline(v-for="attr in ATTRIBUTES", :key="attr")
+      input.custom-control-input(:id="`attribute-${a
+      ttr}`", type="radio", :value="attr", v-model="task.attribute", :disabled="us
+      er.preferences.allocationMode !== 'taskbased'")
+              label.custom-control-label.attr-
+              description(:for="`attribute-${attr}`", v-once, v-b-pop
+              over.hover="$t(`${attr}Text`)") {{ $t(attributesStrings[attr]) }}-->
             </div>
           </b-collapse>
         </div>
diff --git a/website/client/src/components/tasks/user.vue b/website/client/src/components/tasks/user.vue
index 4d6478443a..07a6a727d9 100644
--- a/website/client/src/components/tasks/user.vue
+++ b/website/client/src/components/tasks/user.vue
@@ -35,12 +35,14 @@
             class="filter-panel"
             @mouseleave="checkMouseOver"
           >
+            <!-- eslint-disable vue/no-use-v-if-with-v-for -->
             <div
               v-for="tagsType in tagsByType"
               v-if="tagsType.tags.length > 0 || tagsType.key === 'tags'"
               :key="tagsType.key"
               class="tags-category d-flex"
             >
+              <!-- eslint-enable vue/no-use-v-if-with-v-for -->
               <div class="tags-header">
                 <strong v-once>{{ $t(tagsType.key) }}</strong>
                 <a
@@ -62,6 +64,7 @@
                     >
                       <div
                         v-for="(tag, tagIndex) in tagsSnap[tagsType.key]"
+                        :key="tag.id"
                         class="col-6"
                       >
                         <div class="inline-edit-input-group tag-edit-item input-group">
@@ -99,6 +102,7 @@
                   <template v-if="editingTags && tagsType.key === 'challenges'">
                     <div
                       v-for="(tag, tagIndex) in tagsSnap[tagsType.key]"
+                      :key="tag.id"
                       class="col-6"
                     >
                       <div class="inline-edit-input-group tag-edit-item input-group">
@@ -121,7 +125,8 @@
                   </template>
                   <template v-if="!editingTags || tagsType.key === 'groups'">
                     <div
-                      v-for="(tag, tagIndex) in tagsType.tags"
+                      v-for="(tag) in tagsType.tags"
+                      :key="tag.id"
                       class="col-6"
                     >
                       <div class="custom-control custom-checkbox">
@@ -414,13 +419,10 @@ import { mapState, mapActions } from '@/libs/store';
 import taskDefaults from '@/../../common/script/libs/taskDefaults';
 import brokenTaskModal from './brokenTaskModal';
 
-import Item from '@/components/inventory/item.vue';
-
 export default {
   components: {
     TaskColumn,
     TaskModal,
-    Item,
     spells,
     brokenTaskModal,
     draggable,
diff --git a/website/client/src/components/ui/drawerHeaderTabs.vue b/website/client/src/components/ui/drawerHeaderTabs.vue
index 6a04f70d4f..12d7889045 100644
--- a/website/client/src/components/ui/drawerHeaderTabs.vue
+++ b/website/client/src/components/ui/drawerHeaderTabs.vue
@@ -3,6 +3,7 @@
     <ul class="drawer-tab-container">
       <li
         v-for="(tab, index) in tabs"
+        :key="tab.key"
         class="drawer-tab"
       >
         <a
diff --git a/website/client/src/components/ui/drawerSlider.vue b/website/client/src/components/ui/drawerSlider.vue
index 05d9b26eb9..b31ac9f94c 100644
--- a/website/client/src/components/ui/drawerSlider.vue
+++ b/website/client/src/components/ui/drawerSlider.vue
@@ -31,9 +31,12 @@
       @resized="currentWidth = $event.width - 120"
     >
       <div class="items items-one-line">
-        <template v-for="item in showItems">
+        <template
+          v-for="item in showItems"
+        >
           <div
             v-if="shouldAddVerticalLine(item)"
+            :key="item.key"
             class="vertical-divider"
             :style="dividerMargins"
           ></div>
diff --git a/website/client/src/components/userMenu/achievements.vue b/website/client/src/components/userMenu/achievements.vue
index e1ee93c829..b8954121c5 100644
--- a/website/client/src/components/userMenu/achievements.vue
+++ b/website/client/src/components/userMenu/achievements.vue
@@ -2,13 +2,15 @@
   <div class="standard-page container">
     <div
       v-for="(category, key) in achievements"
+      :key="key"
       class="row"
     >
       <h2 class="col-12">
         {{ $t(key+'Achievs') }}
       </h2>
       <div
-        v-for="achievment in category.achievements"
+        v-for="(achievment, achievmentKey) in category.achievements"
+        :key="achievmentKey"
         class="col-3 text-center"
       >
         <div
@@ -46,13 +48,19 @@
     <div class="row">
       <div class="col-6">
         <h2>Challeges Won</h2>
-        <div v-for="chal in user.achievements.challenges">
+        <div
+          v-for="chal in user.achievements.challenges"
+          :key="chal"
+        >
           <span>{{ chal }}</span>
         </div>
       </div>
       <div class="col-6">
         <h2>Quests Completed</h2>
-        <div v-for="(value, key) in user.achievements.quests">
+        <div
+          v-for="(value, key) in user.achievements.quests"
+          :key="key"
+        >
           <span>{{ content.quests[k].text() }}</span>
           <span>{{ value }}</span>
         </div>
diff --git a/website/client/src/components/userMenu/inbox.vue b/website/client/src/components/userMenu/inbox.vue
index 2ef60422c9..2bb8fe086e 100644
--- a/website/client/src/components/userMenu/inbox.vue
+++ b/website/client/src/components/userMenu/inbox.vue
@@ -34,7 +34,7 @@
           <toggle-switch
             class="float-right"
             :label="optTextSet.switchDescription"
-            :checked="!this.user.inbox.optOut"
+            :checked="!user.inbox.optOut"
             :hover-text="optTextSet.popoverText"
             @change="toggleOpt()"
           />
@@ -80,6 +80,7 @@
         >
           <div
             v-for="conversation in filtersConversations"
+            :key="conversation.key"
             class="conversation"
             :class="{active: selectedConversation.key === conversation.key}"
             @click="selectConversation(conversation.key)"
@@ -103,7 +104,8 @@
             <div
               class="messagePreview"
             >
-              {{ conversation.lastMessageText ? removeTags(parseMarkdown(conversation.lastMessageText)) : '' }}
+              {{ conversation.lastMessageText
+                ? removeTags(parseMarkdown(conversation.lastMessageText)) : '' }}
             </div>
           </div>
         </div>
@@ -421,12 +423,14 @@ export default {
       }
       // Create conversation objects
       const convos = [];
-      for (const key in inboxGroup) {
+      for (const key of Object.keys(inboxGroup)) {
         const recentMessage = inboxGroup[key][0];
 
         const convoModel = {
           key: recentMessage.uuid,
-          name: recentMessage.user, // Handles case where from user sent the only message or the to user sent the only message
+          // Handles case where from user sent
+          // the only message or the to user sent the only message
+          name: recentMessage.user,
           username: !recentMessage.text ? recentMessage.username : recentMessage.toUserName,
           date: recentMessage.timestamp,
           lastMessageText: recentMessage.text,
@@ -439,14 +443,15 @@ export default {
 
       return convos;
     },
-    // Separate from selectedConversation which is not computed so messages don't update automatically
+    // Separate from selectedConversation which
+    // is not computed so messages don't update automatically
     selectedConversationMessages () {
       // Vue-subscribe to changes
       const subScribeToUpdate = this.messagesLoading || this.updateConversionsCounter > -1;
 
       const selectedConversationKey = this.selectedConversation.key;
       const selectedConversation = this.messagesByConversation[selectedConversationKey];
-      this.messages = selectedConversation || []; // eslint-disable-line vue/no-side-effects-in-computed-properties
+      this.messages = selectedConversation || []; // eslint-disable-line vue/no-side-effects-in-computed-properties, max-len
 
       const ordered = orderBy(this.messages, [m => m.timestamp], ['asc']);
 
@@ -462,7 +467,10 @@ export default {
 
       const filtered = subScribeToUpdate && !this.search
         ? this.conversations
-        : filter(this.conversations, conversation => conversation.name.toLowerCase().indexOf(this.search.toLowerCase()) !== -1);
+        : filter(
+          this.conversations,
+          conversation => conversation.name.toLowerCase().indexOf(this.search.toLowerCase()) !== -1,
+        );
 
       const ordered = orderBy(filtered, [o => moment(o.date).toDate()], ['desc']);
 
@@ -677,9 +685,9 @@ export default {
       const res = await axios.get(requestUrl);
       const loadedMessages = res.data.data;
 
-      this.messagesByConversation[this.selectedConversation.key] = this.messagesByConversation[this.selectedConversation.key] || [];
+      this.messagesByConversation[this.selectedConversation.key] = this.messagesByConversation[this.selectedConversation.key] || []; // eslint-disable-line max-len
       const loadedMessagesToAdd = loadedMessages
-        .filter(m => this.messagesByConversation[this.selectedConversation.key].findIndex(mI => mI.id === m.id) === -1);
+        .filter(m => this.messagesByConversation[this.selectedConversation.key].findIndex(mI => mI.id === m.id) === -1); // eslint-disable-line max-len
       this.messagesByConversation[this.selectedConversation.key].push(...loadedMessagesToAdd);
 
       // only show the load more Button if the max count was returned
diff --git a/website/client/src/components/userMenu/profile.vue b/website/client/src/components/userMenu/profile.vue
index a87df724cf..1e0b413c4c 100644
--- a/website/client/src/components/userMenu/profile.vue
+++ b/website/client/src/components/userMenu/profile.vue
@@ -26,7 +26,7 @@
           ></div>
         </button>
         <button
-          v-if="user._id !== this.userLoggedIn._id && userLoggedIn.inbox.blocks.indexOf(user._id) === -1"
+          v-if="user._id !== userLoggedIn._id && userLoggedIn.inbox.blocks.indexOf(user._id) === -1"
           v-b-tooltip.hover.right="$t('blockWarning')"
           class="btn btn-secondary remove-icon"
           @click="blockUser()"
@@ -37,7 +37,7 @@
           ></div>
         </button>
         <button
-          v-if="user._id !== this.userLoggedIn._id && userLoggedIn.inbox.blocks.indexOf(user._id) !== -1"
+          v-if="user._id !== userLoggedIn._id && userLoggedIn.inbox.blocks.indexOf(user._id) !== -1"
           v-b-tooltip.hover.right="$t('unblock')"
           class="btn btn-secondary positive-icon"
           @click="unblockUser()"
@@ -48,7 +48,7 @@
           ></div>
         </button>
         <button
-          v-if="this.userLoggedIn.contributor.admin"
+          v-if="userLoggedIn.contributor.admin"
           v-b-tooltip.hover.right="'Admin - Toggle Tools'"
           class="btn btn-secondary positive-icon"
           @click="toggleAdminTools()"
@@ -60,7 +60,7 @@
         </button>
       </div>
       <div
-        v-if="this.userLoggedIn.contributor.admin && adminToolsLoaded"
+        v-if="userLoggedIn.contributor.admin && adminToolsLoaded"
         class="row admin-profile-actions"
       >
         <div class="col-12 text-right">
@@ -299,22 +299,24 @@
     >
       <div
         v-for="(category, key) in achievements"
+        :key="key"
         class="row"
       >
         <h2 class="col-12 text-center">
           {{ $t(key+'Achievs') }}
         </h2>
         <div
-          v-for="(achievement, key) in category.achievements"
+          v-for="(achievement, achievKey) in category.achievements"
+          :key="achievKey"
           class="col-12 col-md-3 text-center"
         >
           <div
-            :id="key + '-achievement'"
+            :id="achievKey + '-achievement'"
             class="box achievement-container"
             :class="{'achievement-unearned': !achievement.earned}"
           >
             <b-popover
-              :target="'#' + key + '-achievement'"
+              :target="'#' + achievKey + '-achievement'"
               triggers="hover"
               placement="top"
             >
@@ -355,7 +357,10 @@
           <h2 class="text-center">
             {{ $t('challengesWon') }}
           </h2>
-          <div v-for="chal in user.achievements.challenges">
+          <div
+            v-for="chal in user.achievements.challenges"
+            :key="chal"
+          >
             <span v-markdown="chal"></span>
             <hr>
           </div>
@@ -368,7 +373,10 @@
           <h2 class="text-center">
             {{ $t('questsCompleted') }}
           </h2>
-          <div v-for="(value, key) in user.achievements.quests">
+          <div
+            v-for="(value, key) in user.achievements.quests"
+            :key="key"
+          >
             <span>{{ content.quests[key].text() }} ({{ value }})</span>
           </div>
         </div>
@@ -781,7 +789,7 @@ export default {
     },
     selectPage (page) {
       this.selectedPage = page;
-      history.replaceState(null, null, '');
+      window.history.replaceState(null, null, '');
     },
     sendMessage () {
       this.$root.$emit('habitica::new-inbox-message', {
@@ -810,7 +818,8 @@ export default {
       if (!currentLoginDay) return 0;
       const previousRewardDay = currentLoginDay.prevRewardKey;
       const { nextRewardAt } = currentLoginDay;
-      return ((this.user.loginIncentives - previousRewardDay) / (nextRewardAt - previousRewardDay)) * 100;
+      return ((this.user.loginIncentives - previousRewardDay)
+        / (nextRewardAt - previousRewardDay)) * 100;
     },
     save () {
       const values = {};
diff --git a/website/client/src/components/userMenu/profileModal.vue b/website/client/src/components/userMenu/profileModal.vue
index 6437ecba59..c1e1e2ade9 100644
--- a/website/client/src/components/userMenu/profileModal.vue
+++ b/website/client/src/components/userMenu/profileModal.vue
@@ -50,7 +50,7 @@ export default {
   },
   methods: {
     onShown () {
-      history.pushState('', null, this.path);
+      window.history.pushState('', null, this.path);
     },
     onHidden () {
       if (this.$route.path !== window.location.pathname) {
diff --git a/website/client/src/components/userMenu/profileStats.vue b/website/client/src/components/userMenu/profileStats.vue
index c6515cd083..df31637ac8 100644
--- a/website/client/src/components/userMenu/profileStats.vue
+++ b/website/client/src/components/userMenu/profileStats.vue
@@ -11,6 +11,7 @@
         <div class="well">
           <div
             v-for="(label, key) in equipTypes"
+            :key="key"
             class="col-12 col-md-4 item-wrapper"
           >
             <div
@@ -22,7 +23,8 @@
               <div :class="`shop_${equippedItems[key]}`"></div>
             </div>
             <b-popover
-              v-if="label !== 'skip' && equippedItems[key] && equippedItems[key].indexOf('base_0') === -1"
+              v-if="label !== 'skip'
+                && equippedItems[key] && equippedItems[key].indexOf('base_0') === -1"
               :target="key"
               triggers="hover"
               :placement="'bottom'"
@@ -51,6 +53,7 @@
           <!-- Use similar for loop for costume items, except show background if label is 'skip'.-->
           <div
             v-for="(label, key) in equipTypes"
+            :key="key"
             class="col-12 col-md-4 item-wrapper"
           >
             <!-- Append a "C" to the key name since HTML IDs have to be unique.-->
@@ -72,7 +75,8 @@
               <div :class="'icon_background_' + user.preferences.background"></div>
             </div>
             <b-popover
-              v-if="label !== 'skip' && costumeItems[key] && costumeItems[key].indexOf('base_0') === -1"
+              v-if="label !== 'skip'
+                && costumeItems[key] && costumeItems[key].indexOf('base_0') === -1"
               :target="key + 'C'"
               triggers="hover"
               :placement="'bottom'"
@@ -177,6 +181,7 @@
       </h2>
       <div
         v-for="(statInfo, stat) in stats"
+        :key="stat"
         class="col-12 col-md-6"
       >
         <div class="row col-12 stats-column">
@@ -257,6 +262,7 @@
       <div class="row">
         <div
           v-for="(statInfo, stat) in allocateStatsList"
+          :key="stat"
           class="col-12 col-md-3"
         >
           <div class="box white row col-12">
@@ -300,7 +306,7 @@
             :disabled="loading"
             @click="saveAttributes()"
           >
-            {{ this.loading ? $t('loading') : $t('save') }}
+            {{ loading ? $t('loading') : $t('save') }}
           </button>
         </div>
       </div>
@@ -424,21 +430,23 @@ export default {
     },
     formatAnimal (animalName, type) {
       if (type === 'pet') {
-        if (Content.petInfo.hasOwnProperty(animalName)) {
+        if (Content.petInfo[animalName]) {
           return Content.petInfo[animalName].text();
         }
         return this.$t('noActivePet');
       } if (type === 'mount') {
-        if (Content.mountInfo.hasOwnProperty(animalName)) {
+        if (Content.mountInfo[animalName]) {
           return Content.mountInfo[animalName].text();
         }
         return this.$t('noActiveMount');
       }
+
+      return null;
     },
     formatBackground (background) {
       const bg = Content.appearances.background;
 
-      if (bg.hasOwnProperty(background)) {
+      if (bg[background]) {
         return `${bg[background].text()} (${this.$t(bg[background].set.text)})`;
       }
 
diff --git a/website/client/src/components/userMenu/stats.vue b/website/client/src/components/userMenu/stats.vue
index ba12979dd0..775abe007d 100644
--- a/website/client/src/components/userMenu/stats.vue
+++ b/website/client/src/components/userMenu/stats.vue
@@ -55,19 +55,26 @@
         <div v-if="user.flags.itemsEnabled">
           <h3>Battle Gear</h3>
           <ul>
+            <!-- eslint-disable vue/no-use-v-if-with-v-for -->
             <li
-              v-for="(key, itemType) in user.items.gear.equipped"
+              v-for="(key) in user.items.gear.equipped"
               v-if="flatGear[key]"
+              :key="key"
             >
+              <!-- eslint-enable vue/no-use-v-if-with-v-for -->
               <strong>{{ flatGear[key].text() }}</strong>
               <strong
-                v-if="flatGear[key].str || flatGear[key].con || flatGear[key].per || flatGear[key].int"
+                v-if="flatGear[key].str
+                  || flatGear[key].con || flatGear[key].per || flatGear[key].int"
               >
                 :&nbsp;
+                <!-- eslint-disable vue/no-use-v-if-with-v-for -->
                 <span
                   v-for="stat in ['str','con','per','int']"
                   v-if="flatGear[key][stat]"
+                  :key="stat"
                 >{{ flatGear[key][stat] }} {{ $t(stat) }}&nbsp;</span>
+                <!-- eslint-enable vue/no-use-v-if-with-v-for -->
               </strong>
             </li>
           </ul>
@@ -136,6 +143,7 @@
         </h3>
         <div
           v-for="(statInfo, stat) in stats"
+          :key="stat"
           class="row"
         >
           <div class="col-4">
@@ -246,7 +254,10 @@
                   <input
                     v-model="user.preferences.automaticAllocation"
                     type="checkbox"
-                    @change="set({'preferences.automaticAllocation': user.preferences.automaticAllocation, 'preferences.allocationMode': 'taskbased'})"
+                    @change="set({
+                      'preferences.automaticAllocation': user.preferences.automaticAllocation,
+                      'preferences.allocationMode': 'taskbased'
+                    })"
                   >
                   <span
                     class="hint"
@@ -313,7 +324,8 @@
                 </div>
               </form>
               <div
-                v-if="user.preferences.automaticAllocation && !(user.preferences.allocationMode === 'taskbased') && (user.stats.points > 0)"
+                v-if="user.preferences.automaticAllocation
+                  && !(user.preferences.allocationMode === 'taskbased') && (user.stats.points > 0)"
               >
                 <button
                   class="btn btn-primary btn-xs"
@@ -331,6 +343,7 @@
           </div>
           <div
             v-for="(statInfo, stat) in allocateStatsList"
+            :key="stat"
             class="row"
           >
             <div class="col-8">
diff --git a/website/client/src/components/world-boss/worldBossInfoModal.vue b/website/client/src/components/world-boss/worldBossInfoModal.vue
index ecb3a9f343..f739ffb001 100644
--- a/website/client/src/components/world-boss/worldBossInfoModal.vue
+++ b/website/client/src/components/world-boss/worldBossInfoModal.vue
@@ -25,6 +25,7 @@
         <div class="col-12">
           <div
             v-for="bullet in bullets"
+            :key="bullet"
             class="bullet-point d-flex align-items-center justify-content-left"
           >
             <div class="check-icon">
diff --git a/website/client/src/libs/i18n.js b/website/client/src/libs/i18n.js
index b5cec8233e..35d0233f37 100644
--- a/website/client/src/libs/i18n.js
+++ b/website/client/src/libs/i18n.js
@@ -28,7 +28,7 @@ export default {
     }
 
     Vue.prototype.$t = function translateString (...args) {
-      return i18n.t.apply(null, ...args);
+      return i18n.t.apply(null, [...args]);
     };
   },
 };
diff --git a/website/client/vue.config.js b/website/client/vue.config.js
index 8ec03a1aba..dbadf4c291 100644
--- a/website/client/vue.config.js
+++ b/website/client/vue.config.js
@@ -8,7 +8,7 @@ const pkg = require('./package.json');
 const configFile = path.join(path.resolve(__dirname, '../../config.json'));
 
 // TODO abstract from server
-setupNconf(configFile);
+setupNconf(configFile, nconf);
 
 const DEV_BASE_URL = nconf.get('BASE_URL');
 
@@ -100,6 +100,16 @@ module.exports = {
           { convertPathData: { noSpaceAfterFlags: false } },
         ],
       });
+
+    // Disable eslint warnings when running the server
+    config.module
+      .rule('eslint')
+      .use('eslint-loader')
+      .loader('eslint-loader')
+      .tap(options => {
+        options.quiet = true;
+        return options;
+      });
   },
 
   devServer: {
diff --git a/website/server/libs/setupNconf.js b/website/server/libs/setupNconf.js
index 96eeb75662..0fbf2e1bed 100644
--- a/website/server/libs/setupNconf.js
+++ b/website/server/libs/setupNconf.js
@@ -1,18 +1,18 @@
 // NOTE es5 requires/exports to allow import from webpack
-const nconf = require('nconf');
+const nconfDefault = require('nconf');
 const { join, resolve } = require('path');
 
 const PATH_TO_CONFIG = join(resolve(__dirname, '../../../config.json'));
 
-module.exports = function setupNconf (file) {
+module.exports = function setupNconf (file, nconfInstance = nconfDefault) {
   const configFile = file || PATH_TO_CONFIG;
 
-  nconf
+  nconfInstance
     .argv()
     .env()
     .file('user', configFile);
 
-  nconf.set('IS_PROD', nconf.get('NODE_ENV') === 'production');
-  nconf.set('IS_DEV', nconf.get('NODE_ENV') === 'development');
-  nconf.set('IS_TEST', nconf.get('NODE_ENV') === 'test');
+  nconfInstance.set('IS_PROD', nconfInstance.get('NODE_ENV') === 'production');
+  nconfInstance.set('IS_DEV', nconfInstance.get('NODE_ENV') === 'development');
+  nconfInstance.set('IS_TEST', nconfInstance.get('NODE_ENV') === 'test');
 };