diff --git a/src/api/admin.js b/src/api/admin.js
index c33f863a7..d4a9e8ff9 100644
--- a/src/api/admin.js
+++ b/src/api/admin.js
@@ -39,7 +39,7 @@ const USERS_URL_LIST = ({
     isAdmin && 'is_admin',
     isModerator && 'is_moderator',
   ]
-    .filter((x) => x)
+    .filter(Boolean)
     .join(',')
   return `/api/v1/pleroma/admin/users?page=${page}&page_size=${pageSize}&filters=${filters_str}&query=${query}&name=${name}&email=${email}`
 }
@@ -236,7 +236,7 @@ export const changeStatusScope = ({
   opts: { id, sensitive, visibility },
   credentials,
 }) => {
-  var payload = {}
+  const payload = {}
   if (typeof sensitive !== 'undefined') {
     payload['sensitive'] = sensitive
   }
diff --git a/src/components/rich_content/rich_content.jsx b/src/components/rich_content/rich_content.jsx
index 432250548..55f8179ff 100644
--- a/src/components/rich_content/rich_content.jsx
+++ b/src/components/rich_content/rich_content.jsx
@@ -335,7 +335,7 @@ export default {
               this.pauseMfm ? '-pause' : '',
               this.scaleMfm ? '-scale' : '',
             ]
-              .filter((x) => x)
+              .filter(Boolean)
               .join(' ')
             newAttrs['data-mfm-operator'] = mfmOperator
             switch (mfmOperator) {
diff --git a/src/components/settings_modal/tabs/appearance_tab.js b/src/components/settings_modal/tabs/appearance_tab.js
index c11579e53..0fe9bc022 100644
--- a/src/components/settings_modal/tabs/appearance_tab.js
+++ b/src/components/settings_modal/tabs/appearance_tab.js
@@ -401,7 +401,7 @@ const AppearanceTab = {
           }
 
           theme3 = init({
-            inputRuleset: [...input, paletteRule].filter((x) => x),
+            inputRuleset: [...input, paletteRule].filter(Boolean),
             ultimateBackgroundColor: '#000000',
             liteMode: true,
             onlyNormalState: true,
diff --git a/src/components/settings_modal/tabs/style_tab/style_tab.js b/src/components/settings_modal/tabs/style_tab/style_tab.js
index 4d3ed1695..a023b4415 100644
--- a/src/components/settings_modal/tabs/style_tab/style_tab.js
+++ b/src/components/settings_modal/tabs/style_tab/style_tab.js
@@ -602,7 +602,7 @@ export default {
           .map((x) => Object.entries(x.directives))
           .flat()
       })
-      .filter((x) => x)
+      .filter(Boolean)
       .flat()
       .map(([name, value]) => {
         const [valType, valVal] = value.split('|')
diff --git a/src/services/style_setter/style_setter.js b/src/services/style_setter/style_setter.js
index 974d75ec0..83dc6ce2c 100644
--- a/src/services/style_setter/style_setter.js
+++ b/src/services/style_setter/style_setter.js
@@ -126,7 +126,7 @@ const generateTheme = (inputRuleset, callbacks, debug) => {
     const chunk = chunks[counter]
     Promise.all(chunk.map((x) => x())).then((result) => {
       getCssRules(
-        result.filter((x) => x),
+        result.filter(Boolean),
         debug,
       ).forEach((rule) => {
         onNewRule(rule, true)
diff --git a/src/services/theme_data/css_utils.js b/src/services/theme_data/css_utils.js
index 2e3758ad5..990db652c 100644
--- a/src/services/theme_data/css_utils.js
+++ b/src/services/theme_data/css_utils.js
@@ -104,7 +104,7 @@ export const getCssRules = (rules, debug) =>
                     : '',
                   '  --background: ' + v,
                 ]
-                  .filter((x) => x)
+                  .filter(Boolean)
                   .join(';\n')
               }
               const color = getCssColorString(
@@ -115,7 +115,7 @@ export const getCssRules = (rules, debug) =>
               if (rule.directives.backgroundNoCssColor !== 'yes') {
                 cssDirectives.push('background-color: ' + color)
               }
-              return cssDirectives.filter((x) => x).join(';\n')
+              return cssDirectives.filter(Boolean).join(';\n')
             }
             case 'blur': {
               const cssDirectives = []
@@ -157,7 +157,7 @@ export const getCssRules = (rules, debug) =>
               return null
           }
         })
-        .filter((x) => x)
+        .filter(Boolean)
         .map((x) => '  ' + x + ';')
         .join('\n')
 
@@ -172,10 +172,10 @@ export const getCssRules = (rules, debug) =>
         virtualDirectives,
         footer,
       ]
-        .filter((x) => x)
+        .filter(Boolean)
         .join('\n')
     })
-    .filter((x) => x)
+    .filter(Boolean)
 
 export const getScopedVersion = (rules, newScope) => {
   return rules.map((x) => {
diff --git a/src/services/theme_data/iss_serializer.js b/src/services/theme_data/iss_serializer.js
index a9c3887dd..5a336f10b 100644
--- a/src/services/theme_data/iss_serializer.js
+++ b/src/services/theme_data/iss_serializer.js
@@ -62,6 +62,6 @@ export const serialize = (ruleset) => {
 
       return `${header} {\n${content.join(';\n')}\n}`
     })
-    .filter((x) => x)
+    .filter(Boolean)
     .join('\n\n')
 }
diff --git a/src/services/theme_data/theme2_to_theme3.js b/src/services/theme_data/theme2_to_theme3.js
index aa323ac91..5bab4818c 100644
--- a/src/services/theme_data/theme2_to_theme3.js
+++ b/src/services/theme_data/theme2_to_theme3.js
@@ -558,9 +558,9 @@ export const convertTheme2To3 = (data) => {
   )
 
   const flatExtRules = extendedRules
-    .filter((x) => x)
+    .filter(Boolean)
     .reduce((acc, x) => [...acc, ...x], [])
-    .filter((x) => x)
+    .filter(Boolean)
     .reduce((acc, x) => [...acc, ...x], [])
 
   return [
diff --git a/src/services/theme_data/theme_data_3.service.js b/src/services/theme_data/theme_data_3.service.js
index 0c5c82991..626d7daeb 100644
--- a/src/services/theme_data/theme_data_3.service.js
+++ b/src/services/theme_data/theme_data_3.service.js
@@ -338,10 +338,10 @@ export const init = ({
     const relevantRules = ruleset.filter((r) => r.component === component.name)
     const backgrounds = relevantRules
       .map((r) => r.directives.background)
-      .filter((x) => x)
+      .filter(Boolean)
     const opacities = relevantRules
       .map((r) => r.directives.opacity)
-      .filter((x) => x)
+      .filter(Boolean)
     if (
       backgrounds.some((x) => x.match(/--parent/)) ||
       opacities.some((x) => x != null && x < 1)
@@ -596,7 +596,7 @@ export const init = ({
               const shadow = value
                 .split(/,/g)
                 .map((s) => s.trim())
-                .filter((x) => x)
+                .filter(Boolean)
               dynamicVars[k] = shadow
               if (combination.component === rootComponentName) {
                 staticVars[k.substring(2)] = shadow
@@ -752,7 +752,7 @@ export const init = ({
         return processCombination(combination)
       }
     })
-    .filter((x) => x)
+    .filter(Boolean)
   const t2 = performance.now()
   if (debug) {
     console.debug('Eager processing took ' + (t2 - t1) + ' ms')
diff --git a/src/stores/interface.js b/src/stores/interface.js
index 48d7cb061..8c101b9f4 100644
--- a/src/stores/interface.js
+++ b/src/stores/interface.js
@@ -749,7 +749,7 @@ export const useInterfaceStore = defineStore('interface', {
           this.styleDataUsed,
           paletteIss,
           hacks,
-        ].filter((x) => x)
+        ].filter(Boolean)
 
         return applyTheme(
           rulesetArray.flat(),