diff --git a/packages/eslint-plugin/base.js b/packages/eslint-plugin/base.js
index f7a8e5e23..44a5b91d9 100644
--- a/packages/eslint-plugin/base.js
+++ b/packages/eslint-plugin/base.js
@@ -36,7 +36,7 @@ const config = {
   },
   overrides: [
     {
-      files: ['**/*.ts?(x)'],
+      files: ['**/*.(m|c)?ts?(x)'],
       extends: [
         'eslint:recommended',
         'plugin:@typescript-eslint/recommended',
diff --git a/packages/eslint-plugin/typescript.js b/packages/eslint-plugin/typescript.js
index 4786f82ae..33369e15c 100644
--- a/packages/eslint-plugin/typescript.js
+++ b/packages/eslint-plugin/typescript.js
@@ -2,7 +2,7 @@ module.exports = {
   extends: ['./base.js'],
   overrides: [
     {
-      files: ['**/*.ts?(x)'],
+      files: ['**/*.(m|c)?ts?(x)'],
       parser: '@typescript-eslint/parser',
       settings: {
         'import/resolver': {
diff --git a/packages/webpack-config-anansi/src/base/index.js b/packages/webpack-config-anansi/src/base/index.js
index 1a3cc5fe6..836324682 100644
--- a/packages/webpack-config-anansi/src/base/index.js
+++ b/packages/webpack-config-anansi/src/base/index.js
@@ -38,7 +38,7 @@ export default function makeBaseConfig({
   const resolve = {
     modules,
     // TODO: remove '.js', '.json', '.wasm' once '...' is well supported in plugins like linaria
-    extensions: ['.ts', '.tsx', '.js', '.json', '.wasm', '...'],
+    extensions: ['.ts', '.tsx', '.mts', '.cts', '.js', '.json', '.wasm', '...'],
     fallback: NODE_ALIAS,
     plugins:
       tsconfigPathsOptions !== false