diff --git a/integrations/vanilla/package.json b/integrations/vanilla/package.json
new file mode 100644
index 0000000..6dc050d
--- /dev/null
+++ b/integrations/vanilla/package.json
@@ -0,0 +1,11 @@
+{
+  "name": "vanilla-integration",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "test:build": "vite build && vitest"
+  },
+  "devDependencies": {
+    "@tanstack/config": "<1.0.0"
+  }
+}
diff --git a/integrations/vanilla/snap/cjs/index.cjs b/integrations/vanilla/snap/cjs/index.cjs
new file mode 100644
index 0000000..800870c
--- /dev/null
+++ b/integrations/vanilla/snap/cjs/index.cjs
@@ -0,0 +1,5 @@
+"use strict";
+Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
+const utils = require("./utils.cjs");
+exports.optionalChaining = utils.optionalChaining;
+//# sourceMappingURL=index.cjs.map
diff --git a/integrations/vanilla/snap/cjs/index.cjs.map b/integrations/vanilla/snap/cjs/index.cjs.map
new file mode 100644
index 0000000..32a0c91
--- /dev/null
+++ b/integrations/vanilla/snap/cjs/index.cjs.map
@@ -0,0 +1 @@
+{"version":3,"file":"index.cjs","sources":[],"sourcesContent":[],"names":[],"mappings":";;;;"}
\ No newline at end of file
diff --git a/integrations/vanilla/snap/cjs/index.d.cts b/integrations/vanilla/snap/cjs/index.d.cts
new file mode 100644
index 0000000..04bca77
--- /dev/null
+++ b/integrations/vanilla/snap/cjs/index.d.cts
@@ -0,0 +1 @@
+export * from './utils';
diff --git a/integrations/vanilla/snap/cjs/utils.cjs b/integrations/vanilla/snap/cjs/utils.cjs
new file mode 100644
index 0000000..4e19e80
--- /dev/null
+++ b/integrations/vanilla/snap/cjs/utils.cjs
@@ -0,0 +1,8 @@
+"use strict";
+Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
+const optionalChaining = (data) => {
+  var _a;
+  return (_a = data == null ? void 0 : data.maybe) == null ? void 0 : _a.property;
+};
+exports.optionalChaining = optionalChaining;
+//# sourceMappingURL=utils.cjs.map
diff --git a/integrations/vanilla/snap/cjs/utils.cjs.map b/integrations/vanilla/snap/cjs/utils.cjs.map
new file mode 100644
index 0000000..7681dae
--- /dev/null
+++ b/integrations/vanilla/snap/cjs/utils.cjs.map
@@ -0,0 +1 @@
+{"version":3,"file":"utils.cjs","sources":["../../src/utils.ts"],"sourcesContent":["export const optionalChaining = (data: any) => {\n  return data?.maybe?.property\n}\n"],"names":[],"mappings":";;AAAa,MAAA,mBAAmB,CAAC,SAAc;;AAC7C,UAAO,kCAAM,UAAN,mBAAa;AACtB;;"}
\ No newline at end of file
diff --git a/integrations/vanilla/snap/cjs/utils.d.cts b/integrations/vanilla/snap/cjs/utils.d.cts
new file mode 100644
index 0000000..bb2ed12
--- /dev/null
+++ b/integrations/vanilla/snap/cjs/utils.d.cts
@@ -0,0 +1 @@
+export declare const optionalChaining: (data: any) => any;
diff --git a/integrations/vanilla/snap/esm/index.d.ts b/integrations/vanilla/snap/esm/index.d.ts
new file mode 100644
index 0000000..04bca77
--- /dev/null
+++ b/integrations/vanilla/snap/esm/index.d.ts
@@ -0,0 +1 @@
+export * from './utils';
diff --git a/integrations/vanilla/snap/esm/index.js b/integrations/vanilla/snap/esm/index.js
new file mode 100644
index 0000000..a1980dc
--- /dev/null
+++ b/integrations/vanilla/snap/esm/index.js
@@ -0,0 +1,5 @@
+import { optionalChaining } from "./utils.js";
+export {
+  optionalChaining
+};
+//# sourceMappingURL=index.js.map
diff --git a/integrations/vanilla/snap/esm/index.js.map b/integrations/vanilla/snap/esm/index.js.map
new file mode 100644
index 0000000..594ae09
--- /dev/null
+++ b/integrations/vanilla/snap/esm/index.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"index.js","sources":[],"sourcesContent":[],"names":[],"mappings":";"}
\ No newline at end of file
diff --git a/integrations/vanilla/snap/esm/utils.d.ts b/integrations/vanilla/snap/esm/utils.d.ts
new file mode 100644
index 0000000..bb2ed12
--- /dev/null
+++ b/integrations/vanilla/snap/esm/utils.d.ts
@@ -0,0 +1 @@
+export declare const optionalChaining: (data: any) => any;
diff --git a/integrations/vanilla/snap/esm/utils.js b/integrations/vanilla/snap/esm/utils.js
new file mode 100644
index 0000000..cf3866d
--- /dev/null
+++ b/integrations/vanilla/snap/esm/utils.js
@@ -0,0 +1,8 @@
+const optionalChaining = (data) => {
+  var _a;
+  return (_a = data == null ? void 0 : data.maybe) == null ? void 0 : _a.property;
+};
+export {
+  optionalChaining
+};
+//# sourceMappingURL=utils.js.map
diff --git a/integrations/vanilla/snap/esm/utils.js.map b/integrations/vanilla/snap/esm/utils.js.map
new file mode 100644
index 0000000..2125a48
--- /dev/null
+++ b/integrations/vanilla/snap/esm/utils.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"utils.js","sources":["../../src/utils.ts"],"sourcesContent":["export const optionalChaining = (data: any) => {\n  return data?.maybe?.property\n}\n"],"names":[],"mappings":"AAAa,MAAA,mBAAmB,CAAC,SAAc;AAAlC;AACX,UAAO,kCAAM,UAAN,mBAAa;AACtB;"}
\ No newline at end of file
diff --git a/integrations/vanilla/src/index.ts b/integrations/vanilla/src/index.ts
new file mode 100644
index 0000000..9c56149
--- /dev/null
+++ b/integrations/vanilla/src/index.ts
@@ -0,0 +1 @@
+export * from './utils'
diff --git a/integrations/vanilla/src/utils.ts b/integrations/vanilla/src/utils.ts
new file mode 100644
index 0000000..7ea119a
--- /dev/null
+++ b/integrations/vanilla/src/utils.ts
@@ -0,0 +1,3 @@
+export const optionalChaining = (data: any) => {
+  return data?.maybe?.property
+}
diff --git a/integrations/vanilla/tests/build.test.ts b/integrations/vanilla/tests/build.test.ts
new file mode 100644
index 0000000..97fd8a9
--- /dev/null
+++ b/integrations/vanilla/tests/build.test.ts
@@ -0,0 +1,41 @@
+import { readFileSync, readdirSync } from 'node:fs'
+import { fileURLToPath } from 'node:url'
+import { dirname, resolve } from 'node:path'
+import { describe, expect, it } from 'vitest'
+
+const __dirname = dirname(fileURLToPath(import.meta.url))
+const rootDir = resolve(__dirname, '..')
+
+const esmExtensions = ['.js', '.js.map', '.d.ts']
+const cjsExtensions = ['.cjs', '.cjs.map', '.d.cts']
+
+const files = ['index', 'utils']
+
+describe('Check Vanilla build output', () => {
+  it('should output the same file structure', () => {
+    const distFiles = readdirSync(`${rootDir}/dist`, { recursive: true })
+    const snapFiles = readdirSync(`${rootDir}/snap`, { recursive: true })
+
+    expect(distFiles).toEqual(snapFiles)
+  })
+
+  it('should build the same ESM output', () => {
+    files.forEach((file) => {
+      esmExtensions.forEach((ext) => {
+        expect(
+          readFileSync(`${rootDir}/dist/esm/${file}${ext}`).toString(),
+        ).toMatchFileSnapshot(`${rootDir}/snap/esm/${file}${ext}`)
+      })
+    })
+  })
+
+  it('should build the same CJS output', () => {
+    files.forEach((file) => {
+      cjsExtensions.forEach((ext) => {
+        expect(
+          readFileSync(`${rootDir}/dist/cjs/${file}${ext}`).toString(),
+        ).toMatchFileSnapshot(`${rootDir}/snap/cjs/${file}${ext}`)
+      })
+    })
+  })
+})
diff --git a/integrations/vanilla/tsconfig.json b/integrations/vanilla/tsconfig.json
new file mode 100644
index 0000000..387c1a7
--- /dev/null
+++ b/integrations/vanilla/tsconfig.json
@@ -0,0 +1,23 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "useDefineForClassFields": true,
+    "lib": ["ES2020", "DOM", "DOM.Iterable"],
+    "module": "ESNext",
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true
+  },
+  "include": ["src", "tests", "vite.config.ts"]
+}
diff --git a/integrations/vanilla/vite.config.ts b/integrations/vanilla/vite.config.ts
new file mode 100644
index 0000000..8718330
--- /dev/null
+++ b/integrations/vanilla/vite.config.ts
@@ -0,0 +1,17 @@
+import { mergeConfig, defineConfig } from 'vitest/config'
+import { tanstackBuildConfig } from '@tanstack/config/build'
+
+const config = defineConfig({
+  test: {
+    name: 'vanilla-integration',
+    watch: false,
+  },
+})
+
+export default mergeConfig(
+  config,
+  tanstackBuildConfig({
+    entry: 'src/index.ts',
+    srcDir: 'src',
+  }),
+)
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index a971705..7e5e7a6 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -174,6 +174,12 @@ importers:
         specifier: ^2.8.0
         version: 2.8.0(solid-js@1.8.8)(vite@5.0.10)
 
+  integrations/vanilla:
+    devDependencies:
+      '@tanstack/config':
+        specifier: <1.0.0
+        version: link:../..
+
   integrations/vue:
     dependencies:
       vue: