diff --git a/.eslintrc.cjs b/.eslintrc.cjs
new file mode 100644
index 00000000..442ae8f0
--- /dev/null
+++ b/.eslintrc.cjs
@@ -0,0 +1,88 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+module.exports = {
+  root: true,
+  ignorePatterns: [
+    '/website',
+    '**/binaries/**',
+    '**/build/**',
+    '**/generated/**',
+  ],
+  overrides: [
+    // Catch-all
+    {
+      files: ['**/*.?(m|c){j,t}s?(x)'],
+      extends: ['eslint:recommended', 'plugin:prettier/recommended'],
+      plugins: ['prettier'],
+      rules: {
+        'no-unused-vars': ['error', {argsIgnorePattern: '^_'}],
+        'no-var': 'error',
+        'prefer-arrow-callback': 'error',
+        'prefer-const': 'error',
+        'prefer-object-spread': 'error',
+        'prefer-spread': 'error',
+        'require-await': 'error',
+      },
+      env: {
+        es2020: true,
+      },
+      parserOptions: {
+        ecmaVersion: 'latest',
+      },
+    },
+    // ES Modules
+    {
+      files: ['**/*.?(m){j,t}s?(x)'],
+      parserOptions: {
+        sourceType: 'module',
+      },
+    },
+    // CommonJS Modules
+    {
+      files: ['**/*.c{j,t}s?(x)'],
+      env: {
+        commonjs: true,
+      },
+      parserOptions: {
+        sourceType: 'commonjs',
+      },
+    },
+    // TypeScript
+    {
+      files: ['**/*.?(m|c)ts?(x)'],
+      extends: ['plugin:@typescript-eslint/recommended'],
+      parser: '@typescript-eslint/parser',
+      parserOptions: {
+        project: true,
+      },
+      plugins: ['@typescript-eslint'],
+      rules: {
+        '@typescript-eslint/ban-ts-comment': 'off',
+        '@typescript-eslint/no-unused-vars': [
+          'error',
+          {argsIgnorePattern: '^_'},
+        ],
+        '@typescript-eslint/no-var-requires': 'off',
+      },
+    },
+    // Node
+    {
+      files: ['**/.*rc.(c){j,t}s', '**/*.config.?(c){j,t}s'],
+      env: {
+        node: true,
+      },
+    },
+    // Jest
+    {
+      files: ['**/tests/**'],
+      extends: ['plugin:jest/recommended'],
+    },
+  ],
+};
diff --git a/.eslintrc.js b/.eslintrc.js
deleted file mode 100644
index b22edd03..00000000
--- a/.eslintrc.js
+++ /dev/null
@@ -1,65 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- */
-
-module.exports = {
-  root: true,
-  ignorePatterns: [
-    '/website',
-    '**/binaries/**',
-    '**/build/**',
-    '**/generated/**',
-  ],
-  extends: ['eslint:recommended', 'plugin:prettier/recommended'],
-  plugins: ['prettier'],
-  rules: {
-    'no-unused-vars': ['error', {argsIgnorePattern: '^_'}],
-    'no-var': 'error',
-    'prefer-arrow-callback': 'error',
-    'prefer-const': 'error',
-    'prefer-object-spread': 'error',
-    'prefer-spread': 'error',
-    'require-await': 'error',
-  },
-  env: {
-    es2020: true,
-  },
-  parserOptions: {
-    sourceType: 'module',
-    ecmaVersion: 'latest',
-  },
-  overrides: [
-    {
-      files: ['**/*.ts', '**/*.cts', '**/*.mts', '**/*.tsx'],
-      extends: ['plugin:@typescript-eslint/recommended'],
-      parser: '@typescript-eslint/parser',
-      parserOptions: {
-        project: true,
-      },
-      plugins: ['@typescript-eslint'],
-      rules: {
-        '@typescript-eslint/ban-ts-comment': 'off',
-        '@typescript-eslint/no-unused-vars': [
-          'error',
-          {argsIgnorePattern: '^_'},
-        ],
-        '@typescript-eslint/no-var-requires': 'off',
-      },
-    },
-    {
-      files: ['**/.eslintrc.js', '**/just.config.js'],
-      env: {
-        node: true,
-      },
-    },
-    {
-      files: ['**/tests/**'],
-      extends: ['plugin:jest/recommended'],
-    },
-  ],
-};
diff --git a/javascript/just.config.cjs b/javascript/just.config.cjs
index 096352ec..634fc523 100644
--- a/javascript/just.config.cjs
+++ b/javascript/just.config.cjs
@@ -39,7 +39,7 @@ function defineFlavor(flavor, env) {
     jestTask({
       config: path.join(__dirname, 'jest.config.js'),
       nodeArgs: ['--experimental-vm-modules'],
-      env
+      env,
     }),
   );
   task(
@@ -52,14 +52,7 @@ defineFlavor('web');
 
 task('build', series(emcmakeGenerateTask(), cmakeBuildTask()));
 
-task(
-  'test',
-  series(
-    emcmakeGenerateTask(),
-    'cmake-build:web',
-    'jest:web',
-  ),
-);
+task('test', series(emcmakeGenerateTask(), 'cmake-build:web', 'jest:web'));
 
 task(
   'benchmark',
@@ -90,11 +83,7 @@ task(
   ),
 );
 
-function recursiveReplace(
-  obj,
-  pattern,
-  replacement,
-) {
+function recursiveReplace(obj, pattern, replacement) {
   for (const [key, value] of Object.entries(obj)) {
     if (typeof value === 'string') {
       obj[key] = value.replace(pattern, replacement);
@@ -133,13 +122,9 @@ function runBenchTask() {
     ];
     logger.info(['node', ...args].join(' '));
 
-    return spawn(
-      node,
-      args,
-      {
-        stdio: 'inherit',
-      },
-    );
+    return spawn(node, args, {
+      stdio: 'inherit',
+    });
   };
 }