diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2aaf0bb60513..0bfb3eca1583 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,8 +24,6 @@ jobs:
         uses: angular/dev-infra/github-actions/npm/checkout-and-setup-node@95e3a0ede6dfa1aedd34b03918ad72b18f87e5ae
       - name: Install node modules
         run: pnpm install --frozen-lockfile
-      - name: Validate ng-dev config
-        run: pnpm ng-dev config validate
       - name: Checking package externals
         run: |
           bazel build //:package_externals
diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 239d3143a533..5d093eab9329 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -22,8 +22,6 @@ jobs:
         uses: angular/dev-infra/github-actions/npm/checkout-and-setup-node@95e3a0ede6dfa1aedd34b03918ad72b18f87e5ae
       - name: Install node modules
         run: pnpm install --frozen-lockfile
-      - name: Validate ng-dev config
-        run: pnpm ng-dev config validate
       - name: Checking package externals
         run: |
           bazel build //:package_externals
diff --git a/.ng-dev/caretaker.mjs b/.ng-dev/caretaker.mts
similarity index 72%
rename from .ng-dev/caretaker.mjs
rename to .ng-dev/caretaker.mts
index 6c0688e5a342..9e92c09245c6 100644
--- a/.ng-dev/caretaker.mjs
+++ b/.ng-dev/caretaker.mts
@@ -1,9 +1,7 @@
-/**
- * The configuration for `ng-dev caretaker` commands.
- *
- * @type { import("@angular/ng-dev").CaretakerConfig }
- */
-export const caretaker = {
+import {CaretakerConfig} from '@angular/ng-dev';
+
+/** The configuration for `ng-dev caretaker` commands. */
+export const caretaker: CaretakerConfig = {
   githubQueries: [
     {
       name: 'Merge Queue',
diff --git a/.ng-dev/commit-message.mjs b/.ng-dev/commit-message.mts
similarity index 95%
rename from .ng-dev/commit-message.mjs
rename to .ng-dev/commit-message.mts
index 2a22f1dda8d8..c868f0e0b1d4 100644
--- a/.ng-dev/commit-message.mjs
+++ b/.ng-dev/commit-message.mts
@@ -1,9 +1,9 @@
+import {CommitMessageConfig} from '@angular/ng-dev';
+
 /**
  * The configuration for `ng-dev commit-message` commands.
- *
- * @type { import("@angular/ng-dev").CommitMessageConfig }
  */
-export const commitMessage = {
+export const commitMessage: CommitMessageConfig = {
   maxLineLength: Infinity,
   minBodyLength: 0,
   minBodyLengthTypeExcludes: ['docs'],
diff --git a/.ng-dev/config.mjs b/.ng-dev/config.mts
similarity index 100%
rename from .ng-dev/config.mjs
rename to .ng-dev/config.mts
diff --git a/.ng-dev/format.mjs b/.ng-dev/format.mjs
deleted file mode 100644
index 8df6ce8f99e6..000000000000
--- a/.ng-dev/format.mjs
+++ /dev/null
@@ -1,11 +0,0 @@
-/**
- * Configuration for the `ng-dev format` command.
- *
- * @type { import("@angular/ng-dev").FormatConfig }
- */
-export const format = {
-  buildifier: true,
-  prettier: {
-    matchers: ['**/*.{js,ts,mts,mjs,json}'],
-  },
-};
diff --git a/.ng-dev/format.mts b/.ng-dev/format.mts
new file mode 100644
index 000000000000..0e182edbe38f
--- /dev/null
+++ b/.ng-dev/format.mts
@@ -0,0 +1,12 @@
+import {FormatConfig} from '@angular/ng-dev';
+
+/**
+ * Configuration for the ng-dev format command. We currently only use the buildifier
+ * formatter that is responsible for formatting Bazel build and `.bzl` files.
+ */
+export const format: FormatConfig = {
+  buildifier: true,
+  prettier: {
+    matchers: ['**/*.{js,ts,mts,mjs,json}'],
+  },
+};
diff --git a/.ng-dev/github.mjs b/.ng-dev/github.mjs
deleted file mode 100644
index b956dfdb8dfa..000000000000
--- a/.ng-dev/github.mjs
+++ /dev/null
@@ -1,12 +0,0 @@
-/**
- * Github configuration for the `ng-dev` command. This repository is used as
- * remote for the merge script and other utilities like `ng-dev pr rebase`.
- *
- * @type { import("@angular/ng-dev").GithubConfig }
- */
-export const github = {
-  owner: 'angular',
-  name: 'components',
-  mainBranchName: 'main',
-  useNgDevAuthService: true,
-};
diff --git a/.ng-dev/github.mts b/.ng-dev/github.mts
new file mode 100644
index 000000000000..382a66b0de32
--- /dev/null
+++ b/.ng-dev/github.mts
@@ -0,0 +1,12 @@
+import {GithubConfig} from '@angular/ng-dev';
+
+/**
+ * Github configuration for the ng-dev command. This repository is
+ * uses as remote for the merge script.
+ */
+export const github: GithubConfig = {
+  owner: 'angular',
+  name: 'components',
+  mainBranchName: 'main',
+  useNgDevAuthService: true,
+};
diff --git a/.ng-dev/pull-request.mjs b/.ng-dev/pull-request.mts
similarity index 67%
rename from .ng-dev/pull-request.mjs
rename to .ng-dev/pull-request.mts
index 434a3c1143b9..8beb04bb8326 100644
--- a/.ng-dev/pull-request.mjs
+++ b/.ng-dev/pull-request.mts
@@ -1,10 +1,10 @@
+import {PullRequestConfig} from '@angular/ng-dev';
+
 /**
- * Configuration for the merge tool in `ng-dev`. This sets up the labels which
- * are respected by the merge script (e.g. the target labels).
- *
- * @type { import("@angular/ng-dev").PullRequestConfig }
+ * Configuration for the pull request commands in `ng-dev`. This includes the
+ * setup for the merge command.
  */
-export const pullRequest = {
+export const pullRequest: PullRequestConfig = {
   // By default, the merge script merges locally with `git cherry-pick` and autosquash.
   // This has the downside of pull requests showing up as `Closed` instead of `Merged`.
   // In the components repository, since we don't use fixup or squash commits, we can
diff --git a/.ng-dev/release.mjs b/.ng-dev/release.mts
similarity index 82%
rename from .ng-dev/release.mjs
rename to .ng-dev/release.mts
index a19a992b77c8..86318b3c3a85 100644
--- a/.ng-dev/release.mjs
+++ b/.ng-dev/release.mts
@@ -6,6 +6,11 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
+import semver from 'semver';
+import {ReleaseConfig} from '@angular/ng-dev';
+import {assertValidUpdateMigrationCollections} from '../tools/release-checks/check-migration-collections.mjs';
+import {assertValidNpmPackageOutput} from '../tools/release-checks/npm-package-output/index.mjs';
+
 /**
  * Packages that will be published as part of the project.
  *
@@ -25,12 +30,8 @@ export const releasePackages = [
   'material-date-fns-adapter',
 ];
 
-/**
- * Configuration for the `ng-dev release` command.
- *
- * @type { import("@angular/ng-dev").ReleaseConfig }
- */
-export const release = {
+/** Configuration for the `ng-dev release` command. */
+export const release: ReleaseConfig = {
   releaseNotes: {
     useReleaseTitle: true,
     groupOrder: releasePackages,
@@ -57,13 +58,6 @@ export const release = {
     return performNpmReleaseBuild();
   },
   prereleaseCheck: async (newVersionStr, builtPackagesWithInfo) => {
-    const semver = await import('semver');
-    const assertValidUpdateMigrationCollections = await import(
-      '../tools/release-checks/check-migration-collections.mjs'
-    );
-    const assertValidNpmPackageOutput = await import(
-      '../tools/release-checks/npm-package-output/index.mjs'
-    );
     const newVersion = new semver.SemVer(newVersionStr);
 
     await assertValidUpdateMigrationCollections(newVersion);
diff --git a/.ng-dev/tsconfig.json b/.ng-dev/tsconfig.json
new file mode 100644
index 000000000000..0ae4bf3f1fb1
--- /dev/null
+++ b/.ng-dev/tsconfig.json
@@ -0,0 +1,11 @@
+{
+  "compilerOptions": {
+    "strict": true,
+    "target": "es2020",
+    "module": "Node16",
+    "esModuleInterop": true,
+    "noEmit": true,
+    "skipLibCheck": true,
+    "types": []
+  }
+}
diff --git a/package.json b/package.json
index 355ef803889d..b73445427b48 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
     "pnpm": "10.23.0"
   },
   "scripts": {
+    "ng-dev": "node --no-warnings=ExperimentalWarning --loader ts-node/esm/transpile-only node_modules/@angular/ng-dev/bundles/cli.mjs",
     "ng-dev:stamp": "pnpm -s ng-dev release build-env-stamp --additional-stamping-script=tools/bazel-additional-stamp.mjs",
     "build": "node --no-warnings=ExperimentalWarning --loader ts-node/esm/transpile-only ./scripts/build-packages-dist-main.mts",
     "build-docs-content": "node --no-warnings=ExperimentalWarning --loader ts-node/esm/transpile-only ./scripts/build-docs-content-main.mts",
@@ -46,7 +47,7 @@
     "integration-tests": "bazel test --test_tag_filters=-linker-integration-test --build_tests_only -- //integration/...",
     "test-linker-aot": "bazel test --partial_compilation --test_tag_filters=partial-compilation-integration,-firefox --build_tests_only -- //integration/... //src/...",
     "test-linker-jit": "bazel test --partial_compilation --test_tag_filters=partial-compilation-integration,-firefox --build_tests_only --//tools:force_partial_jit_compilation=True  -- //integration/... //src/...",
-    "check-tooling-setup": "pnpm tsc --project tools/tsconfig.json --noEmit && pnpm tsc --project tools/adev-api-extraction/tsconfig.json --noEmit && pnpm tsc --project scripts/tsconfig.json --noEmit && pnpm tsc --project tools/release-checks/tsconfig.json --noEmit",
+    "check-tooling-setup": "pnpm tsc --project tools/tsconfig.json --noEmit && pnpm tsc --project tools/adev-api-extraction/tsconfig.json --noEmit && pnpm tsc --project scripts/tsconfig.json --noEmit && pnpm tsc --project .ng-dev/tsconfig.json --noEmit",
     "tsc": "node ./node_modules/typescript/bin/tsc",
     "ci-push-deploy-docs-app": "node --no-warnings=ExperimentalWarning --loader ts-node/esm/transpile-only scripts/docs-deploy/deploy-ci-push.mts",
     "ci-docs-monitor-test": "node --no-warnings=ExperimentalWarning --loader ts-node/esm/transpile-only scripts/docs-deploy/monitoring/ci-test.mts",
diff --git a/tools/release-checks/tsconfig.json b/tools/release-checks/tsconfig.json
deleted file mode 100644
index 2f10c52d6d80..000000000000
--- a/tools/release-checks/tsconfig.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-  "extends": "../tsconfig.json",
-  "compilerOptions": {
-    "allowJs": true
-  }
-}
diff --git a/tools/tsconfig.json b/tools/tsconfig.json
index a53e28ba631f..810d8d3a6e3f 100644
--- a/tools/tsconfig.json
+++ b/tools/tsconfig.json
@@ -12,5 +12,5 @@
     "downlevelIteration": true,
     "types": ["node"]
   },
-  "exclude": ["**/*.spec.ts", "**/*.spec.mts", "adev-api-extraction/**", "release-checks/**"]
+  "exclude": ["**/*.spec.ts", "**/*.spec.mts", "adev-api-extraction/**"]
 }