diff --git a/package.json b/package.json
index 47b6ba8a..bf1cf8ce 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "docker:deno": "docker compose -f ./test/docker/playground/deno/docker-compose.yml up --build",
     "clear": "shx rm -rf ./lib ./ci ./coverage",
     "prebuild": "npm run clear",
-    "build": "tsc && tsc -p tsconfig.test.json",
+    "build": "tsc && shx rm -rf ./lib/@types && tsc -p tsconfig.types.json && tsc -p tsconfig.test.json",
     "postbuild": "tsx ./tools/compatibility/node.ts && shx cp fixtures/server/package.json ci/fixtures/server/package.json && npm run build:deno && shx chmod +x lib/bin/index.js",
     "build:deno": "esbuild src/polyfills/deno.mts --outfile=lib/polyfills/deno.mjs --format=esm",
     "eslint:checker": "eslint . --ext .js,.ts",
diff --git a/src/modules/assert-promise.ts b/src/modules/assert-promise.ts
index babfa835..7c7538b6 100644
--- a/src/modules/assert-promise.ts
+++ b/src/modules/assert-promise.ts
@@ -1,6 +1,6 @@
 /* c8 ignore next */
 import type { ParseAssertionOptions } from '../@types/assert.js';
-import nodeAssert from 'node:assert';
+import * as nodeAssert from 'node:assert';
 import { parseAssertion } from '../helpers/parse-assertion.js';
 import { nodeVersion } from '../helpers/get-runtime.js';
 
diff --git a/src/modules/assert.ts b/src/modules/assert.ts
index 73b62fa2..19c652e9 100644
--- a/src/modules/assert.ts
+++ b/src/modules/assert.ts
@@ -1,6 +1,6 @@
 /* c8 ignore next */
 import type { ParseAssertionOptions } from '../@types/assert.js';
-import nodeAssert from 'node:assert';
+import * as nodeAssert from 'node:assert';
 import { parseAssertion } from '../helpers/parse-assertion.js';
 import { nodeVersion } from '../helpers/get-runtime.js';
 
diff --git a/tsconfig.json b/tsconfig.json
index 529f7955..4b792018 100755
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,6 @@
 {
   "include": ["src"],
-  "exclude": ["test", "tools"],
+  "exclude": ["test", "tools", "src/@types"],
   "compilerOptions": {
     "target": "ES2015",
     "lib": ["ES2015"],
diff --git a/tsconfig.types.json b/tsconfig.types.json
new file mode 100755
index 00000000..0654f747
--- /dev/null
+++ b/tsconfig.types.json
@@ -0,0 +1,9 @@
+{
+  "extends": "./tsconfig.json",
+  "include": ["src/@types"],
+  "exclude": ["test", "tools"],
+  "compilerOptions": {
+    "outDir": "lib/@types",
+    "emitDeclarationOnly": true
+  }
+}