diff --git a/tests/__snapshots__/esbuild.test.ts.snap b/tests/__snapshots__/esbuild.test.ts.snap
index 56aecb4..94e6f8b 100644
--- a/tests/__snapshots__/esbuild.test.ts.snap
+++ b/tests/__snapshots__/esbuild.test.ts.snap
@@ -3,12 +3,12 @@
 exports[`esbuild > generate mode 1`] = `
 [
   "// <stdout>
-// tests/fixtures/component.tsx
+// tests/fixtures/basic/component.tsx
 function Component() {
   return /* @__PURE__ */ React.createElement("div", null, "I'm a div in a tsx component!");
 }
 
-// tests/fixtures/main.ts
+// tests/fixtures/basic/main.ts
 function hello(s) {
   return "hello" + s;
 }
diff --git a/tests/__snapshots__/rolldown.test.ts.snap b/tests/__snapshots__/rolldown.test.ts.snap
index 54c322d..a2eaffc 100644
--- a/tests/__snapshots__/rolldown.test.ts.snap
+++ b/tests/__snapshots__/rolldown.test.ts.snap
@@ -5,13 +5,13 @@ exports[`rolldown 1`] = `
   "// main.js
 import { jsx as _jsx } from "react/jsx-runtime";
 
-//#region tests/fixtures/component.tsx
+//#region tests/fixtures/basic/component.tsx
 function Component() {
 	return _jsx("div", { children: "I'm a div in a tsx component!" });
 }
 
 //#endregion
-//#region tests/fixtures/main.ts
+//#region tests/fixtures/basic/main.ts
 function hello(s) {
 	return "hello" + s;
 }
diff --git a/tests/__snapshots__/rollup.test.ts.snap b/tests/__snapshots__/rollup.test.ts.snap
index 6e6193c..6bc5f1d 100644
--- a/tests/__snapshots__/rollup.test.ts.snap
+++ b/tests/__snapshots__/rollup.test.ts.snap
@@ -1,6 +1,6 @@
 // Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
-exports[`rollup 1`] = `
+exports[`rollup > generate basic 1`] = `
 [
   "// main.js
 function Component() {
@@ -33,3 +33,56 @@ export declare function Component(): React.JSX.Element;
 ",
 ]
 `;
+
+exports[`rollup > write entry-points 1`] = `
+[
+  "// b/index.d.ts
+export { ComponentB } from "./ComponentB/ComponentB";
+",
+  "// b/index.js
+export { ComponentB } from './ComponentB/ComponentB/index.js';
+",
+  "// b/ComponentB/ComponentB/index.d.ts
+import React from "react";
+interface ComponentBProps {
+    test: string;
+}
+export declare function ComponentB(props: ComponentBProps): React.JSX.Element;
+export {};
+",
+  "// b/ComponentB/ComponentB/index.js
+import React from 'react';
+
+function ComponentB(props) {
+  const { test } = props;
+  return /* @__PURE__ */ React.createElement(React.Fragment, null, "ComponentB: ", test);
+}
+
+export { ComponentB };
+",
+  "// a/index.d.ts
+export { ComponentA } from "./ComponentA/ComponentA";
+",
+  "// a/index.js
+export { ComponentA } from './ComponentA/ComponentA/index.js';
+",
+  "// a/ComponentA/ComponentA/index.d.ts
+import React from "react";
+interface ComponentAProps {
+    test: string;
+}
+export declare function ComponentA(props: ComponentAProps): React.JSX.Element;
+export {};
+",
+  "// a/ComponentA/ComponentA/index.js
+import React from 'react';
+
+function ComponentA(props) {
+  const { test } = props;
+  return /* @__PURE__ */ React.createElement(React.Fragment, null, "ComponentA: ", test);
+}
+
+export { ComponentA };
+",
+]
+`;
diff --git a/tests/esbuild.test.ts b/tests/esbuild.test.ts
index 924992e..9701b4c 100644
--- a/tests/esbuild.test.ts
+++ b/tests/esbuild.test.ts
@@ -6,13 +6,13 @@ import { dependencies } from '../package.json'
 import UnpluginIsolatedDecl from '../src/esbuild'
 
 describe('esbuild', () => {
-  const input = path.resolve(__dirname, 'fixtures/main.ts')
+  const input = path.resolve(__dirname, 'fixtures/basic/main.ts')
 
   test('write mode', async () => {
-    const dist = path.resolve(__dirname, 'temp')
+    const dist = path.resolve(__dirname, 'temp/esbuild/basic')
     await build({
       entryPoints: [input],
-      plugins: [UnpluginIsolatedDecl({ extraOutdir: 'temp' })],
+      plugins: [UnpluginIsolatedDecl({ extraOutdir: 'extraOutdir' })],
       logLevel: 'silent',
       bundle: true,
       external: Object.keys(dependencies),
@@ -21,7 +21,7 @@ describe('esbuild', () => {
       format: 'esm',
     })
 
-    const outDir = path.resolve(dist, 'temp')
+    const outDir = path.resolve(dist, 'extraOutdir')
     await expect(
       Promise.all(
         (await readdir(outDir))
diff --git a/tests/fixtures/component.tsx b/tests/fixtures/basic/component.tsx
similarity index 100%
rename from tests/fixtures/component.tsx
rename to tests/fixtures/basic/component.tsx
diff --git a/tests/fixtures/main.ts b/tests/fixtures/basic/main.ts
similarity index 100%
rename from tests/fixtures/main.ts
rename to tests/fixtures/basic/main.ts
diff --git a/tests/fixtures/types.ts b/tests/fixtures/basic/types.ts
similarity index 100%
rename from tests/fixtures/types.ts
rename to tests/fixtures/basic/types.ts
diff --git a/tests/fixtures/types2.ts b/tests/fixtures/basic/types2.ts
similarity index 100%
rename from tests/fixtures/types2.ts
rename to tests/fixtures/basic/types2.ts
diff --git a/tests/fixtures/entry-points/a/ComponentA/ComponentA.tsx b/tests/fixtures/entry-points/a/ComponentA/ComponentA.tsx
new file mode 100644
index 0000000..8785e34
--- /dev/null
+++ b/tests/fixtures/entry-points/a/ComponentA/ComponentA.tsx
@@ -0,0 +1,10 @@
+import React from "react";
+
+interface ComponentAProps {
+  test: string;
+}
+
+export function ComponentA(props: ComponentAProps): React.JSX.Element {
+  const { test } = props;
+  return <>ComponentA: {test}</>;
+}
diff --git a/tests/fixtures/entry-points/a/index.ts b/tests/fixtures/entry-points/a/index.ts
new file mode 100644
index 0000000..649a88c
--- /dev/null
+++ b/tests/fixtures/entry-points/a/index.ts
@@ -0,0 +1 @@
+export { ComponentA } from "./ComponentA/ComponentA";
diff --git a/tests/fixtures/entry-points/b/ComponentB/ComponentB.tsx b/tests/fixtures/entry-points/b/ComponentB/ComponentB.tsx
new file mode 100644
index 0000000..166532d
--- /dev/null
+++ b/tests/fixtures/entry-points/b/ComponentB/ComponentB.tsx
@@ -0,0 +1,10 @@
+import React from "react";
+
+interface ComponentBProps {
+  test: string;
+}
+
+export function ComponentB(props: ComponentBProps): React.JSX.Element {
+  const { test } = props;
+  return <>ComponentB: {test}</>;
+}
diff --git a/tests/fixtures/entry-points/b/index.ts b/tests/fixtures/entry-points/b/index.ts
new file mode 100644
index 0000000..65837c8
--- /dev/null
+++ b/tests/fixtures/entry-points/b/index.ts
@@ -0,0 +1 @@
+export { ComponentB } from "./ComponentB/ComponentB";
diff --git a/tests/rolldown.test.ts b/tests/rolldown.test.ts
index c468a26..42438df 100644
--- a/tests/rolldown.test.ts
+++ b/tests/rolldown.test.ts
@@ -4,8 +4,8 @@ import { expect, test } from 'vitest'
 import UnpluginIsolatedDecl from '../src/rolldown'
 
 test('rolldown', async () => {
-  const input = path.resolve(__dirname, 'fixtures/main.ts')
-  const dist = path.resolve(__dirname, 'temp')
+  const input = path.resolve(__dirname, 'fixtures/basic/main.ts')
+  const dist = path.resolve(__dirname, 'temp/rolldown/basic')
 
   const bundle = await rolldown({
     input,
diff --git a/tests/rollup.test.ts b/tests/rollup.test.ts
index 9108ff7..cc59d8a 100644
--- a/tests/rollup.test.ts
+++ b/tests/rollup.test.ts
@@ -1,31 +1,88 @@
+import fs from 'node:fs/promises'
 import path from 'node:path'
 import { rollup } from 'rollup'
 import esbuild from 'rollup-plugin-esbuild'
-import { expect, test } from 'vitest'
+import { describe, expect, test } from 'vitest'
 import UnpluginIsolatedDecl from '../src/rollup'
 
-test('rollup', async () => {
-  const input = path.resolve(__dirname, 'fixtures/main.ts')
-  const dist = path.resolve(__dirname, 'temp')
-
-  const bundle = await rollup({
-    input,
-    plugins: [
-      UnpluginIsolatedDecl({
-        extraOutdir: 'temp',
-      }),
-      esbuild(),
-    ],
-    logLevel: 'silent',
+describe('rollup', () => {
+  const TEST_SANDBOX_FOLDER = 'temp/rollup'
+
+  test('generate basic', async () => {
+    const input = path.resolve(__dirname, 'fixtures/basic/main.ts')
+    const dist = path.resolve(__dirname, `${TEST_SANDBOX_FOLDER}/basic`)
+
+    const bundle = await rollup({
+      input,
+      plugins: [
+        UnpluginIsolatedDecl({
+          extraOutdir: 'temp',
+        }),
+        esbuild(),
+      ],
+      logLevel: 'silent',
+    })
+
+    const result = await bundle.generate({
+      dir: dist,
+    })
+
+    expect(
+      result.output.map((asset) =>
+        [
+          `// ${asset.fileName.replaceAll('\\', '/')}`,
+          asset.type === 'chunk' ? asset.code : asset.source,
+        ].join('\n'),
+      ),
+    ).toMatchSnapshot()
   })
 
-  const result = await bundle.generate({
-    dir: dist,
+  test('write entry-points', async () => {
+    const input = {
+      a: path.resolve(__dirname, 'fixtures/entry-points/a/index.ts'),
+      b: path.resolve(__dirname, 'fixtures/entry-points/b/index.ts'),
+    }
+    const dist = path.resolve(__dirname, `${TEST_SANDBOX_FOLDER}/entry-points`)
+
+    const bundle = await rollup({
+      input,
+      plugins: [UnpluginIsolatedDecl(), esbuild()],
+      logLevel: 'silent',
+    })
+
+    // https://github.com/unplugin/unplugin-isolated-decl/issues/22
+    await bundle.write({
+      dir: dist,
+      entryFileNames: '[name]/index.js',
+      preserveModules: true,
+    })
+
+    /**
+     * Map written output from file system rather than from bundle due to
+     * module execution order not consistent
+     *
+     * @see https://github.com/rollup/rollup/issues/3888
+     */
+    const allBundledFiles = (
+      await fs.readdir(dist, {
+        recursive: true,
+        withFileTypes: true,
+      })
+    ).filter((it) => it.isFile())
+
+    const fileSystemOutput = allBundledFiles.map((it) => {
+      return (async () => {
+        const filePath = path.relative(dist, path.join(it.parentPath, it.name))
+
+        const content = await fs.readFile(path.join(dist, filePath), 'utf-8')
+
+        return [
+          `// ${filePath.replaceAll('\\', '/')}`,
+          content.toString(),
+        ].join('\n')
+      })()
+    })
+
+    expect(Promise.all(fileSystemOutput)).resolves.toMatchSnapshot()
   })
-  expect(
-    result.output.map(
-      (asset) =>
-        `// ${asset.fileName.replaceAll('\\', '/')}\n${asset.type === 'chunk' ? asset.code : asset.source}`,
-    ),
-  ).toMatchSnapshot()
 })