diff --git a/.github/workflows/ci-lint-typescript.yml b/.github/workflows/ci-lint-typescript.yml
index 97c741538d..fdfda8be0c 100644
--- a/.github/workflows/ci-lint-typescript.yml
+++ b/.github/workflows/ci-lint-typescript.yml
@@ -17,7 +17,7 @@ jobs:
   eslint-smoke:
     runs-on: arc-linux-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v4
 
       - uses: actions/setup-node@v4
         with:
@@ -37,7 +37,7 @@ jobs:
     env:
       RUSTUP_PERMIT_COPY_RENAME: 1
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v4
       - uses: rlespinasse/github-slug-action@v3.x
 
       - uses: actions/setup-node@v4
diff --git a/.nvmrc b/.nvmrc
index 5bd6811705..fc9099892a 100644
--- a/.nvmrc
+++ b/.nvmrc
@@ -1 +1 @@
-20.19.0
+20.19.5
diff --git a/sdk/typescript/packages/react-components/eslint.config.js b/sdk/typescript/packages/react-components/eslint.config.js
index 9d38842495..4ab24a7732 100644
--- a/sdk/typescript/packages/react-components/eslint.config.js
+++ b/sdk/typescript/packages/react-components/eslint.config.js
@@ -7,6 +7,8 @@ module.exports = [
     typedGlobs: ['**/*.ts', '**/*.tsx'],
   }),
   {
+    // .storybook excluded: those .js files use JSX/optional-chaining without a matching parser.
+    // Follow-up: add a Storybook-scoped ESLint slice (parser + plugin:storybook/recommended).
     ignores: ['tsconfig.json', '**/*.d.ts', '.storybook/**', 'dist/**', 'node_modules/**', '*.config.js'],
   },
 ];
diff --git a/ts-packages/eslint-config-react-typescript/index.js b/ts-packages/eslint-config-react-typescript/index.js
index 20298ee26d..42b2fa9ae7 100644
--- a/ts-packages/eslint-config-react-typescript/index.js
+++ b/ts-packages/eslint-config-react-typescript/index.js
@@ -23,7 +23,6 @@ module.exports = [
       },
       ecmaVersion: 2019,
       sourceType: 'module',
-      project: './tsconfig.json',
     },
     globals: {
       Atomics: 'readonly',
@@ -40,7 +39,7 @@ module.exports = [
     ],
     rules: {
       'jest/prefer-strict-equal': 'error',
-      'jest/prefer-to-have-length': 'warn',
+      'jest/prefer-to-have-length': 'error',
       'prettier/prettier': 'error',
       'import/prefer-default-export': 'off',
       'react/prop-types': 'off',
diff --git a/ts-packages/eslint-config-react-typescript/package.json b/ts-packages/eslint-config-react-typescript/package.json
index 59c75323ae..b56e05cac4 100644
--- a/ts-packages/eslint-config-react-typescript/package.json
+++ b/ts-packages/eslint-config-react-typescript/package.json
@@ -4,6 +4,10 @@
   "version": "1.0.0",
   "license": "Apache-2.0",
   "main": "index.js",
+  "exports": {
+    ".": "./index.js",
+    "./airbnb-typescript-base-flat": "./airbnb-typescript-base-flat.js"
+  },
   "peerDependencies": {
     "@typescript-eslint/eslint-plugin": ">= 8",
     "@typescript-eslint/parser": ">= 8",