diff --git a/.eslintrc b/.eslintrc
index 84103e15..4d3db727 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -1,4 +1,7 @@
 {
+  "extends": [
+    "@shlinkio/js-coding-standard"
+  ],
   "plugins": ["jest"],
   "env": {
     "jest/globals": true
@@ -11,67 +14,15 @@
     "process": true,
     "setImmediate": true
   },
-  "overrides": [
-    {
-      "files": ["**/*.js"],
-      "extends": [
-        "adidas-env/browser",
-        "adidas-env/module",
-        "adidas-env/node",
-        "adidas-es9",
-        "adidas-babel",
-        "adidas-react"
-      ],
-      "settings": {
-        "react": {
-            "version": "detect"
-          }
-      },
-      "rules": {
-        "max-len": ["error", {
-          "code": 120,
-          "ignoreStrings": true,
-          "ignoreTemplateLiterals": true,
-          "ignoreComments": true
-        }],
-        "no-mixed-operators": "off",
-        "comma-dangle": ["error", "always-multiline"],
-        "no-invalid-this": "off",
-        "no-inline-comments": "off",
-        "no-console": "warn",
-        "template-curly-spacing": ["error", "never"],
-        "no-warning-comments": "off",
-        "no-undefined": "off",
-        "indent": ["error", 2, {"SwitchCase": 1}],
-        "no-empty-function": "off",
-        "lines-around-comment": "off",
-        "no-magic-numbers": "off",
-        "react/no-array-index-key": "off",
-        "react/no-did-update-set-state": "off",
-        "react/display-name": "off",
-        "react/jsx-curly-spacing": ["error", "never"],
-        "react/jsx-indent-props": ["error", 2],
-        "react/jsx-first-prop-new-line": ["error", "multiline-multiprop"],
-        "react/jsx-closing-bracket-location": ["error", "tag-aligned"],
-        "react/jsx-filename-extension": ["error", {"extensions": [".js", ".jsx"]}]
-      }
-    },
-    {
-      "files": ["**/*.ts", "**/*.tsx"],
-      "extends": [
-        "@shlinkio/js-coding-standard"
-      ],
-      "rules": {
-        "max-len": ["error", {
-          "code": 120,
-          "ignoreStrings": true,
-          "ignoreTemplateLiterals": true,
-          "ignoreComments": true
-        }],
-        "no-mixed-operators": "off",
-        "react/display-name": "off",
-        "@typescript-eslint/require-array-sort-compare": "off"
-      }
-    }
-  ]
+  "rules": {
+    "max-len": ["error", {
+      "code": 120,
+      "ignoreStrings": true,
+      "ignoreTemplateLiterals": true,
+      "ignoreComments": true
+    }],
+    "no-mixed-operators": "off",
+    "react/display-name": "off",
+    "@typescript-eslint/require-array-sort-compare": "off"
+  }
 }
diff --git a/config/env.js b/config/env.js
index b57375d1..c4ca2b01 100644
--- a/config/env.js
+++ b/config/env.js
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/prefer-nullish-coalescing, @typescript-eslint/promise-function-async, @typescript-eslint/prefer-optional-chain */
 
 const fs = require('fs');
 const path = require('path');
diff --git a/config/paths.js b/config/paths.js
index b34d9058..0728ca85 100644
--- a/config/paths.js
+++ b/config/paths.js
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/prefer-nullish-coalescing, @typescript-eslint/promise-function-async, @typescript-eslint/prefer-optional-chain */
 
 const path = require('path');
 const fs = require('fs');
diff --git a/config/webpack.config.js b/config/webpack.config.js
index 5134e5a2..a182eced 100644
--- a/config/webpack.config.js
+++ b/config/webpack.config.js
@@ -227,7 +227,7 @@ module.exports = (webpackEnv) => {
 
               // Turned on because emoji and regex is not minified properly using default
               // https://github.com/facebook/create-react-app/issues/2488
-              ascii_only: true,
+              ascii_only: true, // eslint-disable-line @typescript-eslint/camelcase
             },
           },
 
@@ -668,7 +668,7 @@ module.exports = (webpackEnv) => {
       fs: 'empty',
       net: 'empty',
       tls: 'empty',
-      child_process: 'empty',
+      child_process: 'empty', // eslint-disable-line @typescript-eslint/camelcase
     },
 
     // Turn off performance processing because we utilize
diff --git a/config/webpackDevServer.config.js b/config/webpackDevServer.config.js
index 6dc74982..61ca020b 100644
--- a/config/webpackDevServer.config.js
+++ b/config/webpackDevServer.config.js
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/prefer-nullish-coalescing */
 
 const fs = require('fs');
 const errorOverlayMiddleware = require('react-dev-utils/errorOverlayMiddleware');
diff --git a/scripts/build.js b/scripts/build.js
index b8854055..4ac2a6f9 100644
--- a/scripts/build.js
+++ b/scripts/build.js
@@ -1,4 +1,4 @@
-/* eslint-disable no-console */
+/* eslint-disable no-console, @typescript-eslint/prefer-nullish-coalescing, @typescript-eslint/promise-function-async, @typescript-eslint/prefer-optional-chain */
 
 // Do this as the first thing so that any code reading it knows the right env.
 process.env.BABEL_ENV = 'production';
@@ -43,8 +43,8 @@ if (!checkRequiredFiles([ paths.appHtml, paths.appIndexJs ])) {
 // Process CLI arguments
 const argvSliceStart = 2;
 const argv = process.argv.slice(argvSliceStart);
-const writeStatsJson = argv.indexOf('--stats') !== -1;
-const withoutDist = argv.indexOf('--no-dist') !== -1;
+const writeStatsJson = argv.includes('--stats');
+const withoutDist = argv.includes('--no-dist');
 const { version, hasVersion } = getVersionFromArgs(argv);
 
 // Generate configuration
diff --git a/scripts/start.js b/scripts/start.js
index 68a4a08c..f1d2ba11 100644
--- a/scripts/start.js
+++ b/scripts/start.js
@@ -1,4 +1,4 @@
-/* eslint-disable no-console */
+/* eslint-disable no-console, @typescript-eslint/prefer-nullish-coalescing, @typescript-eslint/promise-function-async, @typescript-eslint/prefer-optional-chain */
 
 // Do this as the first thing so that any code reading it knows the right env.
 process.env.BABEL_ENV = 'development';
diff --git a/src/registerServiceWorker.js b/src/registerServiceWorker.js
index 023439b2..f12df500 100644
--- a/src/registerServiceWorker.js
+++ b/src/registerServiceWorker.js
@@ -1,3 +1,5 @@
+/* eslint-disable @typescript-eslint/promise-function-async, @typescript-eslint/no-misused-promises */
+
 // In production, we register a service worker to serve assets from local cache.
 
 // This lets the app load faster on subsequent visits in production, and gives
@@ -96,7 +98,7 @@ function checkValidServiceWorker(swUrl) {
       // Ensure service worker exists, and that we really are getting a JS file.
       if (
         response.status === NOT_FOUND_STATUS ||
-        response.headers.get('content-type').indexOf('javascript') === -1
+        response.headers.get('content-type').includes('javascript')
       ) {
         // No service worker found. Probably a different app. Reload the page.
         return navigator.serviceWorker.ready.then((registration) =>