diff --git a/.vscode/settings.json b/.vscode/settings.json
index 6113874ca8..8bbae20cf8 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -10,7 +10,9 @@
   "[markdown]": {
     "files.trimTrailingWhitespace": false
   },
-  "typescript.tsdk": "node_modules/typescript/lib",
+  "eslint.options": {
+    "flags": ["unstable_ts_config"]
+  },
   "eslint.validate": [
     "javascript",
     "javascriptreact",
@@ -41,5 +43,6 @@
     "vuepress",
     "vueuse",
     "zoomable"
-  ]
+  ],
+  "typescript.tsdk": "node_modules/typescript/lib"
 }
diff --git a/commitlint.config.ts b/commitlint.config.ts
index 859187f3de..88222d886d 100644
--- a/commitlint.config.ts
+++ b/commitlint.config.ts
@@ -1,13 +1,5 @@
-import * as fs from 'node:fs'
-import * as path from 'node:path'
 import type { UserConfig } from '@commitlint/types'
-
-const getSubDirectories = (dir: string): string[] =>
-  fs
-    .readdirSync(dir)
-    .filter((item) => fs.statSync(path.join(dir, item)).isDirectory())
-
-const PACKAGES = getSubDirectories(path.resolve(__dirname, 'packages'))
+import { PACKAGES } from './scripts/constants.js'
 
 export default {
   extends: ['@commitlint/config-conventional'],
diff --git a/e2e/docs/.vuepress/plugins/foo/fooPlugin.ts b/e2e/docs/.vuepress/plugins/foo/fooPlugin.ts
index ac2c07663f..93ef0c8cff 100644
--- a/e2e/docs/.vuepress/plugins/foo/fooPlugin.ts
+++ b/e2e/docs/.vuepress/plugins/foo/fooPlugin.ts
@@ -1,8 +1,11 @@
 import { getDirname, path } from 'vuepress/utils'
 
-const DIRNAME = getDirname(import.meta.url)
+const __dirname = getDirname(import.meta.url)
 
 export const fooPlugin = {
   name: 'test-plugin',
-  clientConfigFile: path.resolve(DIRNAME, './nonDefaultExportClientConfig.js'),
+  clientConfigFile: path.resolve(
+    __dirname,
+    './nonDefaultExportClientConfig.js',
+  ),
 }
diff --git a/e2e/docs/.vuepress/theme/node/e2eTheme.ts b/e2e/docs/.vuepress/theme/node/e2eTheme.ts
index 7d2f5d1288..9da94d50f7 100644
--- a/e2e/docs/.vuepress/theme/node/e2eTheme.ts
+++ b/e2e/docs/.vuepress/theme/node/e2eTheme.ts
@@ -1,7 +1,7 @@
 import type { Theme } from 'vuepress/core'
 import { getDirname, path } from 'vuepress/utils'
 
-const DIRNAME = getDirname(import.meta.url)
+const __dirname = getDirname(import.meta.url)
 
 export const e2eTheme = (): Theme => ({
   name: '@vuepress/theme-e2e',
@@ -14,7 +14,7 @@ export const e2eTheme = (): Theme => ({
     // ...
   },
 
-  clientConfigFile: path.resolve(DIRNAME, '../client/config.ts'),
+  clientConfigFile: path.resolve(__dirname, '../client/config.ts'),
 
   extendsPage: () => {
     // ...
diff --git a/e2e/utils/source.ts b/e2e/utils/source.ts
index 6f07073446..2f9c2eba37 100644
--- a/e2e/utils/source.ts
+++ b/e2e/utils/source.ts
@@ -1,9 +1,9 @@
 import { fs, getDirname, path } from 'vuepress/utils'
 
-const DIRNAME = getDirname(import.meta.url)
+const __dirname = getDirname(import.meta.url)
 
 const resolveSourceMarkdownPath = (...args: string[]): string =>
-  path.resolve(DIRNAME, '../docs', ...args)
+  path.resolve(__dirname, '../docs', ...args)
 
 export const readSourceMarkdown = async (filePath: string): Promise<string> =>
   fs.readFile(resolveSourceMarkdownPath(filePath), 'utf-8')
diff --git a/eslint.config.js b/eslint.config.js
deleted file mode 100644
index 955989f874..0000000000
--- a/eslint.config.js
+++ /dev/null
@@ -1,41 +0,0 @@
-import fs from 'node:fs'
-import path from 'node:path'
-import { fileURLToPath } from 'node:url'
-import { vuepress } from 'eslint-config-vuepress'
-
-const ROOT = path.resolve(fileURLToPath(import.meta.url), '..')
-const E2E_DIR = path.resolve(ROOT, 'e2e')
-const PACKAGES_DIRS = fs
-  .readdirSync(path.resolve(ROOT, 'packages'))
-  .map((item) => `./packages/${item}`)
-
-export default vuepress(
-  {
-    imports: {
-      packageDir: [ROOT, E2E_DIR, ...PACKAGES_DIRS],
-    },
-    typescript: {
-      overrides: {
-        '@typescript-eslint/no-dynamic-delete': 'off',
-        '@typescript-eslint/no-non-null-assertion': 'off',
-        'no-underscore-dangle': [
-          'warn',
-          { allow: ['_context', '_pageChunk', '_registeredComponents'] },
-        ],
-      },
-    },
-    vue: {
-      overrides: {
-        'no-useless-assignment': 'off', // TODO: false positive in vue sfc
-      },
-    },
-  },
-  {
-    files: ['**/tests/**'],
-    rules: {
-      'import/no-unresolved': 'off',
-      'no-console': 'off',
-      'prefer-template': 'off',
-    },
-  },
-)
diff --git a/eslint.config.ts b/eslint.config.ts
new file mode 100644
index 0000000000..fa0eed31d7
--- /dev/null
+++ b/eslint.config.ts
@@ -0,0 +1,43 @@
+import path from 'node:path'
+import { vuepress } from 'eslint-config-vuepress'
+import { PACKAGES, ROOT } from './scripts/constants.js'
+
+export default vuepress(
+  {
+    imports: {
+      packageDir: [
+        ROOT,
+        path.resolve(ROOT, 'e2e'),
+        ...PACKAGES.map((item) => path.resolve(ROOT, `packages/${item}`)),
+      ],
+    },
+    javascript: {
+      overrides: {
+        'no-underscore-dangle': [
+          'warn',
+          {
+            allow: [
+              '__dirname',
+              '_context',
+              '_pageChunk',
+              '_registeredComponents',
+            ],
+          },
+        ],
+      },
+    },
+    vue: {
+      overrides: {
+        'no-useless-assignment': 'off', // TODO: false positive in vue sfc
+      },
+    },
+  },
+  {
+    files: ['**/tests/**'],
+    rules: {
+      'import/no-unresolved': 'off',
+      'no-console': 'off',
+      'prefer-template': 'off',
+    },
+  },
+)
diff --git a/package.json b/package.json
index 5b6a8419c2..36b142a566 100644
--- a/package.json
+++ b/package.json
@@ -8,8 +8,8 @@
     "check-types": "vue-tsc --noEmit",
     "clean": "pnpm --parallel --stream clean",
     "format": "prettier --write .",
-    "lint": "eslint . && prettier --check .",
-    "lint:fix": "eslint --fix . && prettier --write .",
+    "lint": "eslint --flag unstable_ts_config . && prettier --check .",
+    "lint:fix": "eslint --flag unstable_ts_config --fix . && prettier --write .",
     "prepare": "husky",
     "release": "pnpm release:check && pnpm release:version && pnpm release:publish",
     "release:changelog": "conventional-changelog -p angular -i CHANGELOG.md -s",
@@ -24,7 +24,7 @@
   "lint-staged": {
     "*.!(cjs|js|ts|vue)": "prettier --write --ignore-unknown",
     "*.(cjs|js|ts|vue)": [
-      "eslint --fix",
+      "eslint --flag unstable_ts_config --fix",
       "prettier --write"
     ],
     "package.json": "sort-package-json"
@@ -42,6 +42,7 @@
     "eslint": "^9.9.0",
     "eslint-config-vuepress": "^5.1.4",
     "husky": "^9.1.4",
+    "jiti": "^1.21.6",
     "lint-staged": "^15.2.9",
     "prettier": "^3.3.3",
     "prettier-config-vuepress": "^5.0.0",
diff --git a/packages/client/src/types/internal/clientConfigs.d.ts b/packages/client/src/types/internal/clientConfigs.d.ts
index 718d04cb22..c98c7420ee 100644
--- a/packages/client/src/types/internal/clientConfigs.d.ts
+++ b/packages/client/src/types/internal/clientConfigs.d.ts
@@ -1,5 +1,6 @@
 import type { ClientConfig } from '../clientConfig.js'
 
 declare module '@internal/clientConfigs' {
+  // eslint-disable-next-line @typescript-eslint/naming-convention
   export const clientConfigs: ClientConfig[]
 }
diff --git a/packages/shared/tests/routes/resolveLocalePath.spec.ts b/packages/shared/tests/routes/resolveLocalePath.spec.ts
index 02b933aec6..c50ccb9dbf 100644
--- a/packages/shared/tests/routes/resolveLocalePath.spec.ts
+++ b/packages/shared/tests/routes/resolveLocalePath.spec.ts
@@ -2,7 +2,7 @@ import { expect, it } from 'vitest'
 import type { LocaleConfig } from '../../src/index.js'
 import { resolveLocalePath } from '../../src/index.js'
 
-const locales: LocaleConfig = {
+const LOCALES: LocaleConfig = {
   '/': {
     lang: 'en-US',
   },
@@ -29,6 +29,6 @@ const TEST_CASES: [string, string][] = [
 
 TEST_CASES.forEach(([routePath, expected]) => {
   it(routePath, () => {
-    expect(resolveLocalePath(locales, routePath)).toEqual(expected)
+    expect(resolveLocalePath(LOCALES, routePath)).toEqual(expected)
   })
 })
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 85aa963a2b..97519a2346 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -41,6 +41,9 @@ importers:
       husky:
         specifier: ^9.1.4
         version: 9.1.4
+      jiti:
+        specifier: ^1.21.6
+        version: 1.21.6
       lint-staged:
         specifier: ^15.2.9
         version: 15.2.9
diff --git a/scripts/constants.ts b/scripts/constants.ts
new file mode 100644
index 0000000000..d27510f9d4
--- /dev/null
+++ b/scripts/constants.ts
@@ -0,0 +1,6 @@
+import fs from 'node:fs'
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+
+export const ROOT = path.resolve(fileURLToPath(import.meta.url), '../..')
+export const PACKAGES = fs.readdirSync(path.resolve(ROOT, 'packages'))
diff --git a/tsconfig.json b/tsconfig.json
index 4a0e90869a..903939176f 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,6 +2,7 @@
   "extends": "./tsconfig.base.json",
   "compilerOptions": {
     "baseUrl": ".",
+    "declaration": false,
     "jsx": "preserve",
     "paths": {
       "@internal/*": ["./packages/client/src/types/internal/*.d.ts"],
@@ -14,8 +15,8 @@
     "**/.vuepress/**/*",
     "e2e/**/*",
     "packages/**/*",
-    "commitlint.config.ts",
-    "vitest.config.ts"
+    "scripts/**/*",
+    "*.config.ts"
   ],
   "exclude": ["node_modules", ".temp", "lib", "dist"]
 }
diff --git a/vitest.config.ts b/vitest.config.ts
index 71f9ca68b4..0527a7b0fe 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -1,17 +1,6 @@
-import fs from 'node:fs'
 import path from 'node:path'
-import { fileURLToPath } from 'node:url'
 import { defineConfig } from 'vitest/config'
-
-const getSubDirectories = (dir: string): string[] =>
-  fs
-    .readdirSync(dir)
-    .filter((item) => fs.statSync(path.join(dir, item)).isDirectory())
-
-const ROOT = path.dirname(fileURLToPath(import.meta.url))
-const PACKAGES = getSubDirectories(path.resolve(ROOT, 'packages')).filter(
-  (item) => item !== 'vuepress',
-)
+import { PACKAGES, ROOT } from './scripts/constants.js'
 
 export default defineConfig({
   resolve: {