diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5508c503..dfecf030 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,6 +23,40 @@ permissions:
   contents: read
 
 jobs:
+  bun:
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          persist-credentials: false
+          
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@735343b667d3e6f658f44d0eca948eb6282f2b76
+
+      - name: Install dependencies
+        run: bun install
+
+      - name: Run unit tests
+        run: bun run typescript:bun
+
+  deno:
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          persist-credentials: false
+          
+      - name: Setup Deno
+        uses: denoland/setup-deno@e95548e56dfa95d4e1a28d6f422fafe75c4c26fb
+
+      - name: Install dependencies
+        run: deno install
+
+      - name: Run unit tests
+        run: deno run typescript:deno
+  
   test:
     permissions:
       contents: write
diff --git a/lib/runtime.js b/lib/runtime.js
index 9179a7af..bbcf03b2 100644
--- a/lib/runtime.js
+++ b/lib/runtime.js
@@ -36,6 +36,18 @@ function checkEnvVariable (name, value) {
 const runtime = {}
 // use Object.defineProperties to provide lazy load
 Object.defineProperties(runtime, {
+  bun: {
+    get () {
+      cache.bun ??= 'Bun' in globalThis
+      return cache.bun
+    }
+  },
+  deno: {
+    get () {
+      cache.deno ??= 'Deno' in globalThis
+      return cache.deno
+    }
+  },
   tsNode: {
     get () {
       cache.tsNode ??= (
@@ -108,6 +120,8 @@ Object.defineProperties(runtime, {
     get () {
       cache.supportTypeScript ??= (
         checkEnvVariable('FASTIFY_AUTOLOAD_TYPESCRIPT') ||
+        runtime.bun ||
+        runtime.deno ||
         runtime.tsNode ||
         runtime.vitest ||
         runtime.babelNode ||
diff --git a/package.json b/package.json
index 8ff6cfeb..75fbef04 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,8 @@
     "lint:fix": "eslint --fix",
     "test": "npm run typescript && npm run typescript:native && npm run typescript:jest && npm run typescript:swc-node-register && npm run typescript:tsm && npm run typescript:tsx && npm run typescript:vitest && npm run typescript:esbuild && npm run unit",
     "typescript": "tsd",
+    "typescript:bun": "bun scripts/unit-typescript-bun-esm.js",
+    "typescript:deno": "deno -A scripts/unit-typescript-deno-esm.js",
     "typescript:jest": "jest",
     "typescript:esm": "node scripts/unit-typescript-esm.js",
     "typescript:swc-node-register": "node scripts/unit-typescript-swc-node-register.js",
@@ -75,8 +77,8 @@
   "devDependencies": {
     "@fastify/url-data": "^6.0.0",
     "@jsumners/line-reporter": "^1.0.1",
-    "@swc-node/register": "^1.9.1",
-    "@swc/core": "^1.5.25",
+    "@swc-node/register": "1.11.1",
+    "@swc/core": "1.13.20",
     "@types/jest": "^30.0.0",
     "@types/node": "^24.0.8",
     "borp": "^0.20.0",
@@ -96,7 +98,7 @@
     "tsx": "^4.15.7",
     "typescript": "5.5",
     "vite": "^7.0.0",
-    "vitest": "^3.0.4"
+    "vitest": "^4.0.3"
   },
   "jest": {
     "preset": "ts-jest",
diff --git a/scripts/unit-typescript-bun-esm.js b/scripts/unit-typescript-bun-esm.js
new file mode 100644
index 00000000..1a3aa96a
--- /dev/null
+++ b/scripts/unit-typescript-bun-esm.js
@@ -0,0 +1,28 @@
+'use strict'
+
+const { exec } = require('node:child_process')
+const { argv } = require('node:process')
+
+const args = [
+  argv[0],
+  'test',
+  './test/typescript-esm/forceESM.ts'
+]
+
+const child = exec(args.join(' '), {
+  shell: true,
+  env: {
+    ...process.env,
+    TS_NODE_COMPILER_OPTIONS: JSON.stringify({
+      module: 'ESNext',
+      target: 'ES2020',
+      allowJs: false,
+      moduleResolution: 'node',
+      esModuleInterop: true
+    })
+  }
+})
+
+child.stdout.pipe(process.stdout)
+child.stderr.pipe(process.stderr)
+child.once('close', process.exit)
diff --git a/scripts/unit-typescript-deno-esm.js b/scripts/unit-typescript-deno-esm.js
new file mode 100644
index 00000000..f61d80b4
--- /dev/null
+++ b/scripts/unit-typescript-deno-esm.js
@@ -0,0 +1,29 @@
+'use strict'
+
+const { exec } = require('node:child_process')
+const { argv } = require('node:process')
+
+const args = [
+  argv[0],
+  'test',
+  '-A',
+  './test/typescript-esm/forceESM.ts'
+]
+
+const child = exec(args.join(' '), {
+  shell: true,
+  env: {
+    ...process.env,
+    TS_NODE_COMPILER_OPTIONS: JSON.stringify({
+      module: 'ESNext',
+      target: 'ES2020',
+      allowJs: false,
+      moduleResolution: 'node',
+      esModuleInterop: true
+    })
+  }
+})
+
+child.stdout.pipe(process.stdout)
+child.stderr.pipe(process.stderr)
+child.once('close', process.exit)
diff --git a/scripts/unit-typescript-swc-node-register.js b/scripts/unit-typescript-swc-node-register.js
index 2d9398d5..5d37e507 100644
--- a/scripts/unit-typescript-swc-node-register.js
+++ b/scripts/unit-typescript-swc-node-register.js
@@ -4,7 +4,8 @@ const { exec } = require('node:child_process')
 
 const args = [
   'node',
-  '--require=@swc-node/register',
+  '-r',
+  '@swc-node/register',
   'test/typescript/basic.ts'
 ]
 
diff --git a/test/typescript-esm/forceESM.ts b/test/typescript-esm/forceESM.ts
index c694cfb7..a58d6752 100644
--- a/test/typescript-esm/forceESM.ts
+++ b/test/typescript-esm/forceESM.ts
@@ -1,4 +1,4 @@
-import test, { describe, before, after } from 'node:test'
+import { describe, test } from 'node:test'
 import assert from 'node:assert'
 import fastify from 'fastify'
 
@@ -10,18 +10,15 @@ const __dirname = dirname(fileURLToPath(import.meta.url))
 
 describe('typescript/basic test suite', function () {
   const app = fastify()
-  before(async function () {
+
+  test('should load routes and respond correctly', async function () {
     app.register(fastifyAutoLoad, { dir: resolve(__dirname, 'app'), forceESM: true })
     await app.ready()
-  })
 
-  after(async function () {
-    await app.close()
-  })
-
-  test('should load routes and respond correctly', async function () {
     const res = await app.inject({ url: '/installed' })
     assert.strictEqual(res.statusCode, 200)
     assert.deepStrictEqual(JSON.parse(res.payload), { result: 'ok' })
+
+    await app.close()
   })
 })