diff --git a/src/RosLib.js b/src/RosLib.ts
similarity index 100%
rename from src/RosLib.js
rename to src/RosLib.ts
diff --git a/src/actionlib/index.js b/src/actionlib/index.ts
similarity index 100%
rename from src/actionlib/index.js
rename to src/actionlib/index.ts
diff --git a/src/core/index.js b/src/core/index.ts
similarity index 100%
rename from src/core/index.js
rename to src/core/index.ts
diff --git a/src/index.js b/src/index.ts
similarity index 100%
rename from src/index.js
rename to src/index.ts
diff --git a/src/math/index.js b/src/math/index.ts
similarity index 100%
rename from src/math/index.js
rename to src/math/index.ts
diff --git a/src/tf/index.js b/src/tf/index.ts
similarity index 100%
rename from src/tf/index.js
rename to src/tf/index.ts
diff --git a/src/urdf/index.js b/src/urdf/index.ts
similarity index 100%
rename from src/urdf/index.js
rename to src/urdf/index.ts
diff --git a/tsconfig.json b/tsconfig.json
index a37f8434b..2eb2326ba 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -4,6 +4,7 @@
     "noEmit": true
   },
   "include": [
+    "vite.config.ts",
     "./src"
   ]
 }
diff --git a/vite.config.js b/vite.config.ts
similarity index 77%
rename from vite.config.js
rename to vite.config.ts
index 98c9c5734..ad91b63b3 100644
--- a/vite.config.js
+++ b/vite.config.ts
@@ -1,5 +1,5 @@
 import { resolve } from 'path'
-import { defineConfig } from 'vite'
+import { defineConfig } from 'vitest/config'
 import dts from 'vite-plugin-dts';
 import checker from 'vite-plugin-checker';
 
@@ -22,7 +22,7 @@ export default defineConfig({
   build: {
     lib: {
       // Could also be a dictionary or array of multiple entry points
-      entry: resolve(__dirname, 'src/RosLib.js'),
+      entry: resolve(__dirname, 'src/RosLib.ts'),
       name: 'ROSLIB',
       // the proper extensions will be added
       fileName: 'RosLib',
@@ -38,13 +38,18 @@ export default defineConfig({
   },
   test: {
     include: [
-      '{src,test}/**\/*.{test,spec}.?(c|m)[jt]s?(x)',
+      '{src,test}/**/*.{test,spec}.?(c|m)[jt]s?(x)',
       './test/examples/*.js',
     ],
     exclude: ['dist'],
-    environmentMatchGlobs: [
-      // React example requires DOM emulation
-      ['examples/react-example/**', 'jsdom']
+    projects: [
+      {
+        extends: true,
+        test: {
+          environment: 'jsdom',
+          name: 'jsdom',
+        },
+      },
     ]
   }
 })