diff --git a/src/.eslintrc.cjs b/src/.eslintrc.cjs
new file mode 100644
index 00000000..cdb56585
--- /dev/null
+++ b/src/.eslintrc.cjs
@@ -0,0 +1,138 @@
+'use strict';
+
+module.exports = {
+  ignorePatterns: [
+    '/static/js/admin/jquery.autosize.js',
+    '/static/js/admin/minify.json.js',
+    '/static/js/vendors/browser.js',
+    '/static/js/vendors/farbtastic.js',
+    '/static/js/vendors/gritter.js',
+    '/static/js/vendors/html10n.js',
+    '/static/js/vendors/jquery.js',
+    '/static/js/vendors/nice-select.js',
+    '/tests/frontend/lib/',
+  ],
+  overrides: [
+    {
+      files: [
+        '**/.eslintrc.*',
+      ],
+      extends: 'etherpad/node',
+    },
+    {
+      files: [
+        '**/*',
+      ],
+      excludedFiles: [
+        '**/.eslintrc.*',
+        'tests/frontend/**/*',
+      ],
+      extends: 'etherpad/node',
+    },
+    {
+      files: [
+        'static/**/*',
+        'tests/frontend/helper.js',
+        'tests/frontend/helper/**/*',
+      ],
+      excludedFiles: [
+        '**/.eslintrc.*',
+      ],
+      extends: 'etherpad/browser',
+      env: {
+        'shared-node-browser': true,
+      },
+      overrides: [
+        {
+          files: [
+            'tests/frontend/helper/**/*',
+          ],
+          globals: {
+            helper: 'readonly',
+          },
+        },
+      ],
+    },
+    {
+      files: [
+        'tests/**/*',
+      ],
+      excludedFiles: [
+        '**/.eslintrc.*',
+        'tests/frontend/cypress/**/*',
+        'tests/frontend/helper.js',
+        'tests/frontend/helper/**/*',
+        'tests/frontend/travis/**/*',
+        'tests/ratelimit/**/*',
+      ],
+      extends: 'etherpad/tests',
+      rules: {
+        'mocha/no-exports': 'off',
+        'mocha/no-top-level-hooks': 'off',
+      },
+    },
+    {
+      files: [
+        'tests/backend/**/*',
+      ],
+      excludedFiles: [
+        '**/.eslintrc.*',
+      ],
+      extends: 'etherpad/tests/backend',
+      overrides: [
+        {
+          files: [
+            'tests/backend/**/*',
+          ],
+          excludedFiles: [
+            'tests/backend/specs/**/*',
+          ],
+          rules: {
+            'mocha/no-exports': 'off',
+            'mocha/no-top-level-hooks': 'off',
+          },
+        },
+      ],
+    },
+    {
+      files: [
+        'tests/frontend/**/*',
+      ],
+      excludedFiles: [
+        '**/.eslintrc.*',
+        'tests/frontend/cypress/**/*',
+        'tests/frontend/helper.js',
+        'tests/frontend/helper/**/*',
+        'tests/frontend/travis/**/*',
+      ],
+      extends: 'etherpad/tests/frontend',
+      overrides: [
+        {
+          files: [
+            'tests/frontend/**/*',
+          ],
+          excludedFiles: [
+            'tests/frontend/specs/**/*',
+          ],
+          rules: {
+            'mocha/no-exports': 'off',
+            'mocha/no-top-level-hooks': 'off',
+          },
+        },
+      ],
+    },
+    {
+      files: [
+        'tests/frontend/cypress/**/*',
+      ],
+      extends: 'etherpad/tests/cypress',
+    },
+    {
+      files: [
+        'tests/frontend/travis/**/*',
+      ],
+      extends: 'etherpad/node',
+    },
+  ],
+  root: true,
+};
diff --git a/src/package.json b/src/package.json
index aef5a88d..906354e5 100644
--- a/src/package.json
+++ b/src/package.json
@@ -98,142 +98,6 @@
     "split-grid": "^1.0.11",
     "supertest": "^6.1.6"
   },
-  "eslintConfig": {
-    "ignorePatterns": [
-      "/static/js/admin/jquery.autosize.js",
-      "/static/js/admin/minify.json.js",
-      "/static/js/vendors/browser.js",
-      "/static/js/vendors/farbtastic.js",
-      "/static/js/vendors/gritter.js",
-      "/static/js/vendors/html10n.js",
-      "/static/js/vendors/jquery.js",
-      "/static/js/vendors/nice-select.js",
-      "/tests/frontend/lib/"
-    ],
-    "overrides": [
-      {
-        "files": [
-          "**/.eslintrc.js"
-        ],
-        "extends": "etherpad/node"
-      },
-      {
-        "files": [
-          "**/*"
-        ],
-        "excludedFiles": [
-          "**/.eslintrc.js",
-          "tests/frontend/**/*"
-        ],
-        "extends": "etherpad/node"
-      },
-      {
-        "files": [
-          "static/**/*",
-          "tests/frontend/helper.js",
-          "tests/frontend/helper/**/*"
-        ],
-        "excludedFiles": [
-          "**/.eslintrc.js"
-        ],
-        "extends": "etherpad/browser",
-        "env": {
-          "shared-node-browser": true
-        },
-        "overrides": [
-          {
-            "files": [
-              "tests/frontend/helper/**/*"
-            ],
-            "globals": {
-              "helper": "readonly"
-            }
-          }
-        ]
-      },
-      {
-        "files": [
-          "tests/**/*"
-        ],
-        "excludedFiles": [
-          "**/.eslintrc.js",
-          "tests/frontend/cypress/**/*",
-          "tests/frontend/helper.js",
-          "tests/frontend/helper/**/*",
-          "tests/frontend/travis/**/*",
-          "tests/ratelimit/**/*"
-        ],
-        "extends": "etherpad/tests",
-        "rules": {
-          "mocha/no-exports": "off",
-          "mocha/no-top-level-hooks": "off"
-        }
-      },
-      {
-        "files": [
-          "tests/backend/**/*"
-        ],
-        "excludedFiles": [
-          "**/.eslintrc.js"
-        ],
-        "extends": "etherpad/tests/backend",
-        "overrides": [
-          {
-            "files": [
-              "tests/backend/**/*"
-            ],
-            "excludedFiles": [
-              "tests/backend/specs/**/*"
-            ],
-            "rules": {
-              "mocha/no-exports": "off",
-              "mocha/no-top-level-hooks": "off"
-            }
-          }
-        ]
-      },
-      {
-        "files": [
-          "tests/frontend/**/*"
-        ],
-        "excludedFiles": [
-          "**/.eslintrc.js",
-          "tests/frontend/cypress/**/*",
-          "tests/frontend/helper.js",
-          "tests/frontend/helper/**/*",
-          "tests/frontend/travis/**/*"
-        ],
-        "extends": "etherpad/tests/frontend",
-        "overrides": [
-          {
-            "files": [
-              "tests/frontend/**/*"
-            ],
-            "excludedFiles": [
-              "tests/frontend/specs/**/*"
-            ],
-            "rules": {
-              "mocha/no-exports": "off",
-              "mocha/no-top-level-hooks": "off"
-            }
-          }
-        ]
-      },
-      {
-        "files": [
-          "tests/frontend/cypress/**/*"
-        ],
-        "extends": "etherpad/tests/cypress"
-      },
-      {
-        "files": [
-          "tests/frontend/travis/**/*"
-        ],
-        "extends": "etherpad/node"
-      }
-    ],
-    "root": true
-  },
   "engines": {
     "node": ">=12.17.0",
     "npm": ">=5.5.1"