diff --git a/.eslintrc.js b/.eslintrc.js
index d1182628263db2..b6e4253e61dfff 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -316,7 +316,7 @@ module.exports = defineConfig({
       ],
 
       parserOptions: {
-        project: true,
+        projectService: true,
         tsconfigRootDir: __dirname,
       },
 
diff --git a/app/javascript/mastodon/actions/markers.ts b/app/javascript/mastodon/actions/markers.ts
index 521859f6c25b42..6254e3f083ff12 100644
--- a/app/javascript/mastodon/actions/markers.ts
+++ b/app/javascript/mastodon/actions/markers.ts
@@ -65,7 +65,7 @@ export const synchronouslySubmitMarkers = createAppAsyncThunk(
       client.setRequestHeader('Content-Type', 'application/json');
       client.setRequestHeader('Authorization', `Bearer ${accessToken}`);
       client.send(JSON.stringify(params));
-    } catch (e) {
+    } catch {
       // Do not make the BeforeUnload handler error out
     }
   },
diff --git a/app/javascript/mastodon/actions/streaming.js b/app/javascript/mastodon/actions/streaming.js
index bfdd894b81561d..03013110c38779 100644
--- a/app/javascript/mastodon/actions/streaming.js
+++ b/app/javascript/mastodon/actions/streaming.js
@@ -151,7 +151,7 @@ async function refreshHomeTimelineAndNotification(dispatch, getState) {
     // TODO: polling for merged notifications
     try {
       await dispatch(pollRecentGroupNotifications());
-    } catch (error) {
+    } catch {
       // TODO
     }
   } else {
diff --git a/app/javascript/mastodon/common.js b/app/javascript/mastodon/common.js
index 28857de5346c20..c61e02250c234c 100644
--- a/app/javascript/mastodon/common.js
+++ b/app/javascript/mastodon/common.js
@@ -5,7 +5,7 @@ export function start() {
 
   try {
     Rails.start();
-  } catch (e) {
+  } catch {
     // If called twice
   }
 }
diff --git a/app/javascript/mastodon/components/error_boundary.jsx b/app/javascript/mastodon/components/error_boundary.jsx
index 7fea08e85f6ef6..392a3ad61e26d1 100644
--- a/app/javascript/mastodon/components/error_boundary.jsx
+++ b/app/javascript/mastodon/components/error_boundary.jsx
@@ -60,8 +60,8 @@ export default class ErrorBoundary extends PureComponent {
     try {
       textarea.select();
       document.execCommand('copy');
-    } catch (e) {
-
+    } catch {
+      // do nothing
     } finally {
       document.body.removeChild(textarea);
     }
diff --git a/app/javascript/mastodon/features/interaction_modal/index.jsx b/app/javascript/mastodon/features/interaction_modal/index.jsx
index 07f1e6fe5a1e31..723e27ae1c7857 100644
--- a/app/javascript/mastodon/features/interaction_modal/index.jsx
+++ b/app/javascript/mastodon/features/interaction_modal/index.jsx
@@ -131,7 +131,7 @@ class LoginForm extends React.PureComponent {
     try {
       new URL(url);
       return true;
-    } catch(_) {
+    } catch {
       return false;
     }
   };
diff --git a/app/javascript/mastodon/features/ui/index.jsx b/app/javascript/mastodon/features/ui/index.jsx
index 657c9e9e583df0..a6e3640478464c 100644
--- a/app/javascript/mastodon/features/ui/index.jsx
+++ b/app/javascript/mastodon/features/ui/index.jsx
@@ -319,8 +319,8 @@ class UI extends PureComponent {
 
     try {
       e.dataTransfer.dropEffect = 'copy';
-    } catch (err) {
-
+    } catch {
+      // do nothing
     }
 
     return false;
diff --git a/app/javascript/mastodon/locales/intl_provider.tsx b/app/javascript/mastodon/locales/intl_provider.tsx
index 68d4fcbd965191..94372f95b0fc41 100644
--- a/app/javascript/mastodon/locales/intl_provider.tsx
+++ b/app/javascript/mastodon/locales/intl_provider.tsx
@@ -17,7 +17,7 @@ function onProviderError(error: unknown) {
     error &&
     typeof error === 'object' &&
     error instanceof Error &&
-    error.message.match('MISSING_DATA')
+    /MISSING_DATA/.exec(error.message)
   ) {
     console.warn(error.message);
   }
diff --git a/app/javascript/mastodon/settings.js b/app/javascript/mastodon/settings.js
index f31aee0afc0725..f4883dc406cdb5 100644
--- a/app/javascript/mastodon/settings.js
+++ b/app/javascript/mastodon/settings.js
@@ -14,7 +14,7 @@ export default class Settings {
       const encodedData = JSON.stringify(data);
       localStorage.setItem(key, encodedData);
       return data;
-    } catch (e) {
+    } catch {
       return null;
     }
   }
@@ -24,7 +24,7 @@ export default class Settings {
     try {
       const rawData = localStorage.getItem(key);
       return JSON.parse(rawData);
-    } catch (e) {
+    } catch {
       return null;
     }
   }
@@ -35,7 +35,8 @@ export default class Settings {
       const key = this.generateKey(id);
       try {
         localStorage.removeItem(key);
-      } catch (e) {
+      } catch {
+        // ignore if the key is not found
       }
     }
     return data;
diff --git a/app/javascript/mastodon/store/middlewares/errors.ts b/app/javascript/mastodon/store/middlewares/errors.ts
index e77cec34ed9fb6..3ad3844d5b7c2f 100644
--- a/app/javascript/mastodon/store/middlewares/errors.ts
+++ b/app/javascript/mastodon/store/middlewares/errors.ts
@@ -30,7 +30,7 @@ function isActionWithmaybeAlertParams(
   return isAction(action);
 }
 
-// eslint-disable-next-line @typescript-eslint/ban-types -- we need to use `{}` here to ensure the dispatch types can be merged
+// eslint-disable-next-line @typescript-eslint/no-empty-object-type -- we need to use `{}` here to ensure the dispatch types can be merged
 export const errorsMiddleware: Middleware<{}, RootState> =
   ({ dispatch }) =>
   (next) =>
diff --git a/app/javascript/mastodon/store/middlewares/sounds.ts b/app/javascript/mastodon/store/middlewares/sounds.ts
index 91407b1ec0a1dd..bb3a4aa4740d4f 100644
--- a/app/javascript/mastodon/store/middlewares/sounds.ts
+++ b/app/javascript/mastodon/store/middlewares/sounds.ts
@@ -51,7 +51,7 @@ const play = (audio: HTMLAudioElement) => {
 };
 
 export const soundsMiddleware = (): Middleware<
-  // eslint-disable-next-line @typescript-eslint/ban-types -- we need to use `{}` here to ensure the dispatch types can be merged
+  // eslint-disable-next-line @typescript-eslint/no-empty-object-type -- we need to use `{}` here to ensure the dispatch types can be merged
   {},
   RootState
 > => {
diff --git a/package.json b/package.json
index ddf7ee75a2343b..ea0c0246cb7b0b 100644
--- a/package.json
+++ b/package.json
@@ -168,8 +168,8 @@
     "@types/requestidlecallback": "^0.3.5",
     "@types/webpack": "^4.41.33",
     "@types/webpack-env": "^1.18.4",
-    "@typescript-eslint/eslint-plugin": "^7.0.0",
-    "@typescript-eslint/parser": "^7.0.0",
+    "@typescript-eslint/eslint-plugin": "^8.0.0",
+    "@typescript-eslint/parser": "^8.0.0",
     "babel-jest": "^29.5.0",
     "eslint": "^8.41.0",
     "eslint-define-config": "^2.0.0",
diff --git a/yarn.lock b/yarn.lock
index 90e764f49c6bdc..f498a5560e69fc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -82,7 +82,19 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@babel/generator@npm:^7.25.0, @babel/generator@npm:^7.25.4, @babel/generator@npm:^7.7.2":
+"@babel/generator@npm:^7.25.0, @babel/generator@npm:^7.7.2":
+  version: 7.25.0
+  resolution: "@babel/generator@npm:7.25.0"
+  dependencies:
+    "@babel/types": "npm:^7.25.0"
+    "@jridgewell/gen-mapping": "npm:^0.3.5"
+    "@jridgewell/trace-mapping": "npm:^0.3.25"
+    jsesc: "npm:^2.5.1"
+  checksum: 10c0/d0e2dfcdc8bdbb5dded34b705ceebf2e0bc1b06795a1530e64fb6a3ccf313c189db7f60c1616effae48114e1a25adc75855bc4496f3779a396b3377bae718ce7
+  languageName: node
+  linkType: hard
+
+"@babel/generator@npm:^7.25.4":
   version: 7.25.4
   resolution: "@babel/generator@npm:7.25.4"
   dependencies:
@@ -1521,7 +1533,18 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@babel/types@npm:^7.0.0, @babel/types@npm:^7.0.0-beta.49, @babel/types@npm:^7.12.11, @babel/types@npm:^7.12.6, @babel/types@npm:^7.20.7, @babel/types@npm:^7.24.7, @babel/types@npm:^7.24.8, @babel/types@npm:^7.25.0, @babel/types@npm:^7.25.2, @babel/types@npm:^7.25.4, @babel/types@npm:^7.3.3, @babel/types@npm:^7.4.4":
+"@babel/types@npm:^7.0.0, @babel/types@npm:^7.0.0-beta.49, @babel/types@npm:^7.12.11, @babel/types@npm:^7.12.6, @babel/types@npm:^7.20.7, @babel/types@npm:^7.24.7, @babel/types@npm:^7.24.8, @babel/types@npm:^7.25.0, @babel/types@npm:^7.25.2, @babel/types@npm:^7.3.3, @babel/types@npm:^7.4.4":
+  version: 7.25.2
+  resolution: "@babel/types@npm:7.25.2"
+  dependencies:
+    "@babel/helper-string-parser": "npm:^7.24.8"
+    "@babel/helper-validator-identifier": "npm:^7.24.7"
+    to-fast-properties: "npm:^2.0.0"
+  checksum: 10c0/e489435856be239f8cc1120c90a197e4c2865385121908e5edb7223cfdff3768cba18f489adfe0c26955d9e7bbb1fb10625bc2517505908ceb0af848989bd864
+  languageName: node
+  linkType: hard
+
+"@babel/types@npm:^7.25.4":
   version: 7.25.4
   resolution: "@babel/types@npm:7.25.4"
   dependencies:
@@ -2791,8 +2814,8 @@ __metadata:
     "@types/requestidlecallback": "npm:^0.3.5"
     "@types/webpack": "npm:^4.41.33"
     "@types/webpack-env": "npm:^1.18.4"
-    "@typescript-eslint/eslint-plugin": "npm:^7.0.0"
-    "@typescript-eslint/parser": "npm:^7.0.0"
+    "@typescript-eslint/eslint-plugin": "npm:^8.0.0"
+    "@typescript-eslint/parser": "npm:^8.0.0"
     arrow-key-navigation: "npm:^1.2.0"
     async-mutex: "npm:^0.5.0"
     axios: "npm:^1.4.0"
@@ -4114,44 +4137,44 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@typescript-eslint/eslint-plugin@npm:^7.0.0":
-  version: 7.18.0
-  resolution: "@typescript-eslint/eslint-plugin@npm:7.18.0"
+"@typescript-eslint/eslint-plugin@npm:^8.0.0":
+  version: 8.1.0
+  resolution: "@typescript-eslint/eslint-plugin@npm:8.1.0"
   dependencies:
     "@eslint-community/regexpp": "npm:^4.10.0"
-    "@typescript-eslint/scope-manager": "npm:7.18.0"
-    "@typescript-eslint/type-utils": "npm:7.18.0"
-    "@typescript-eslint/utils": "npm:7.18.0"
-    "@typescript-eslint/visitor-keys": "npm:7.18.0"
+    "@typescript-eslint/scope-manager": "npm:8.1.0"
+    "@typescript-eslint/type-utils": "npm:8.1.0"
+    "@typescript-eslint/utils": "npm:8.1.0"
+    "@typescript-eslint/visitor-keys": "npm:8.1.0"
     graphemer: "npm:^1.4.0"
     ignore: "npm:^5.3.1"
     natural-compare: "npm:^1.4.0"
     ts-api-utils: "npm:^1.3.0"
   peerDependencies:
-    "@typescript-eslint/parser": ^7.0.0
-    eslint: ^8.56.0
+    "@typescript-eslint/parser": ^8.0.0 || ^8.0.0-alpha.0
+    eslint: ^8.57.0 || ^9.0.0
   peerDependenciesMeta:
     typescript:
       optional: true
-  checksum: 10c0/2b37948fa1b0dab77138909dabef242a4d49ab93e4019d4ef930626f0a7d96b03e696cd027fa0087881c20e73be7be77c942606b4a76fa599e6b37f6985304c3
+  checksum: 10c0/7bbeae588f859b59c34d6a76cac06ef0fa605921b40c5d3b65b94829984280ea84c4dd3f5cb9ce2eb326f5563e9abb4c90ebff05c47f83f4def296c2ea1fa86c
   languageName: node
   linkType: hard
 
-"@typescript-eslint/parser@npm:^7.0.0":
-  version: 7.18.0
-  resolution: "@typescript-eslint/parser@npm:7.18.0"
+"@typescript-eslint/parser@npm:^8.0.0":
+  version: 8.1.0
+  resolution: "@typescript-eslint/parser@npm:8.1.0"
   dependencies:
-    "@typescript-eslint/scope-manager": "npm:7.18.0"
-    "@typescript-eslint/types": "npm:7.18.0"
-    "@typescript-eslint/typescript-estree": "npm:7.18.0"
-    "@typescript-eslint/visitor-keys": "npm:7.18.0"
+    "@typescript-eslint/scope-manager": "npm:8.1.0"
+    "@typescript-eslint/types": "npm:8.1.0"
+    "@typescript-eslint/typescript-estree": "npm:8.1.0"
+    "@typescript-eslint/visitor-keys": "npm:8.1.0"
     debug: "npm:^4.3.4"
   peerDependencies:
-    eslint: ^8.56.0
+    eslint: ^8.57.0 || ^9.0.0
   peerDependenciesMeta:
     typescript:
       optional: true
-  checksum: 10c0/370e73fca4278091bc1b657f85e7d74cd52b24257ea20c927a8e17546107ce04fbf313fec99aed0cc2a145ddbae1d3b12e9cc2c1320117636dc1281bcfd08059
+  checksum: 10c0/b94b2d3ab5ca505484d100701fad6a04a5dc8d595029bac1b9f5b8a4a91d80fd605b0f65d230b36a97ab7e5d55eeb0c28af2ab63929a3e4ab8fdefd2a548c36b
   languageName: node
   linkType: hard
 
@@ -4165,30 +4188,28 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@typescript-eslint/scope-manager@npm:7.18.0":
-  version: 7.18.0
-  resolution: "@typescript-eslint/scope-manager@npm:7.18.0"
+"@typescript-eslint/scope-manager@npm:8.1.0":
+  version: 8.1.0
+  resolution: "@typescript-eslint/scope-manager@npm:8.1.0"
   dependencies:
-    "@typescript-eslint/types": "npm:7.18.0"
-    "@typescript-eslint/visitor-keys": "npm:7.18.0"
-  checksum: 10c0/038cd58c2271de146b3a594afe2c99290034033326d57ff1f902976022c8b0138ffd3cb893ae439ae41003b5e4bcc00cabf6b244ce40e8668f9412cc96d97b8e
+    "@typescript-eslint/types": "npm:8.1.0"
+    "@typescript-eslint/visitor-keys": "npm:8.1.0"
+  checksum: 10c0/2bcf8cd176a1819bddcae16c572e7da8fba821b995a91cd53d64d8d6b85a17f5a895522f281ba57e34929574bddd4d6684ee3e545ec4e8096be4c3198e253a9a
   languageName: node
   linkType: hard
 
-"@typescript-eslint/type-utils@npm:7.18.0":
-  version: 7.18.0
-  resolution: "@typescript-eslint/type-utils@npm:7.18.0"
+"@typescript-eslint/type-utils@npm:8.1.0":
+  version: 8.1.0
+  resolution: "@typescript-eslint/type-utils@npm:8.1.0"
   dependencies:
-    "@typescript-eslint/typescript-estree": "npm:7.18.0"
-    "@typescript-eslint/utils": "npm:7.18.0"
+    "@typescript-eslint/typescript-estree": "npm:8.1.0"
+    "@typescript-eslint/utils": "npm:8.1.0"
     debug: "npm:^4.3.4"
     ts-api-utils: "npm:^1.3.0"
-  peerDependencies:
-    eslint: ^8.56.0
   peerDependenciesMeta:
     typescript:
       optional: true
-  checksum: 10c0/ad92a38007be620f3f7036f10e234abdc2fdc518787b5a7227e55fd12896dacf56e8b34578723fbf9bea8128df2510ba8eb6739439a3879eda9519476d5783fd
+  checksum: 10c0/62753941c4136e8d2daa72fe0410dea48e5317a6f12ece6382ca85e29912bd1b3f739b61d1060fc0a1f8c488dfc905beab4c8b8497951a21c3138a659c7271ec
   languageName: node
   linkType: hard
 
@@ -4199,10 +4220,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@typescript-eslint/types@npm:7.18.0":
-  version: 7.18.0
-  resolution: "@typescript-eslint/types@npm:7.18.0"
-  checksum: 10c0/eb7371ac55ca77db8e59ba0310b41a74523f17e06f485a0ef819491bc3dd8909bb930120ff7d30aaf54e888167e0005aa1337011f3663dc90fb19203ce478054
+"@typescript-eslint/types@npm:8.1.0":
+  version: 8.1.0
+  resolution: "@typescript-eslint/types@npm:8.1.0"
+  checksum: 10c0/ceade44455f45974e68956016c4d1c6626580732f7f9675e14ffa63db80b551752b0df596b20473dae9f0dc6ed966e17417dc2cf36e1a82b6ab0edc97c5eaa50
   languageName: node
   linkType: hard
 
@@ -4225,12 +4246,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@typescript-eslint/typescript-estree@npm:7.18.0":
-  version: 7.18.0
-  resolution: "@typescript-eslint/typescript-estree@npm:7.18.0"
+"@typescript-eslint/typescript-estree@npm:8.1.0":
+  version: 8.1.0
+  resolution: "@typescript-eslint/typescript-estree@npm:8.1.0"
   dependencies:
-    "@typescript-eslint/types": "npm:7.18.0"
-    "@typescript-eslint/visitor-keys": "npm:7.18.0"
+    "@typescript-eslint/types": "npm:8.1.0"
+    "@typescript-eslint/visitor-keys": "npm:8.1.0"
     debug: "npm:^4.3.4"
     globby: "npm:^11.1.0"
     is-glob: "npm:^4.0.3"
@@ -4240,21 +4261,21 @@ __metadata:
   peerDependenciesMeta:
     typescript:
       optional: true
-  checksum: 10c0/0c7f109a2e460ec8a1524339479cf78ff17814d23c83aa5112c77fb345e87b3642616291908dcddea1e671da63686403dfb712e4a4435104f92abdfddf9aba81
+  checksum: 10c0/a7bc8275df1c79c4cb14ef086c56674316dd4907efec53eddca35d0b5220428b69c82178ce2d95138da2e398269c8bd0764cae8020a36417e411e35c3c47bc4b
   languageName: node
   linkType: hard
 
-"@typescript-eslint/utils@npm:7.18.0":
-  version: 7.18.0
-  resolution: "@typescript-eslint/utils@npm:7.18.0"
+"@typescript-eslint/utils@npm:8.1.0":
+  version: 8.1.0
+  resolution: "@typescript-eslint/utils@npm:8.1.0"
   dependencies:
     "@eslint-community/eslint-utils": "npm:^4.4.0"
-    "@typescript-eslint/scope-manager": "npm:7.18.0"
-    "@typescript-eslint/types": "npm:7.18.0"
-    "@typescript-eslint/typescript-estree": "npm:7.18.0"
+    "@typescript-eslint/scope-manager": "npm:8.1.0"
+    "@typescript-eslint/types": "npm:8.1.0"
+    "@typescript-eslint/typescript-estree": "npm:8.1.0"
   peerDependencies:
-    eslint: ^8.56.0
-  checksum: 10c0/a25a6d50eb45c514469a01ff01f215115a4725fb18401055a847ddf20d1b681409c4027f349033a95c4ff7138d28c3b0a70253dfe8262eb732df4b87c547bd1e
+    eslint: ^8.57.0 || ^9.0.0
+  checksum: 10c0/c95503a6bdcd98b1ff04d1adbf46377b2036b1c510d90a4a056401f996f775f06c3108c95fb81cd6babc9c97b73b91b8e848f0337bc508de8a49c993582f0e75
   languageName: node
   linkType: hard
 
@@ -4285,13 +4306,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@typescript-eslint/visitor-keys@npm:7.18.0":
-  version: 7.18.0
-  resolution: "@typescript-eslint/visitor-keys@npm:7.18.0"
+"@typescript-eslint/visitor-keys@npm:8.1.0":
+  version: 8.1.0
+  resolution: "@typescript-eslint/visitor-keys@npm:8.1.0"
   dependencies:
-    "@typescript-eslint/types": "npm:7.18.0"
+    "@typescript-eslint/types": "npm:8.1.0"
     eslint-visitor-keys: "npm:^3.4.3"
-  checksum: 10c0/538b645f8ff1d9debf264865c69a317074eaff0255e63d7407046176b0f6a6beba34a6c51d511f12444bae12a98c69891eb6f403c9f54c6c2e2849d1c1cb73c0
+  checksum: 10c0/b7544dbb0eec1ddbfcd95c04b51b9a739c2e768c16d1c88508f976a2b0d1bc02fefb7491930e06e48073a5c07c6f488cd8403bba3a8b918888b93a88d5ac3869
   languageName: node
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