Fix

packages/redux-devtools-app/.eslintrc.js

@@ -2,13 +2,21 @@ module.exports = {
   extends: '../../.eslintrc',
   overrides: [
     {
-      files: ['*.ts', '*.tsx'],
+      files: ['src/*.ts', 'src/*.tsx'],
       extends: '../../eslintrc.ts.react.base.json',
       parserOptions: {
         tsconfigRootDir: __dirname,
         project: ['./tsconfig.json'],
       },
     },
+    {
+      files: ['demo/*.ts', 'demo/*.tsx'],
+      extends: '../../eslintrc.ts.react.base.json',
+      parserOptions: {
+        tsconfigRootDir: __dirname,
+        project: ['./tsconfig.demo.json'],
+      },
+    },
     {
       files: ['test/*.ts', 'test/*.tsx'],
       extends: '../../eslintrc.ts.react.jest.base.json',

packages/redux-devtools-app/tsconfig.demo.json

@@ -0,0 +1,7 @@
+{
+  "extends": "../../tsconfig.react.base.json",
+  "compilerOptions": {
+    "outDir": "lib"
+  },
+  "include": ["demo", "src"]
+}