diff --git a/src/ExportsService.ts b/src/ExportsService.ts
index 8f6f3c6..290d5ae 100644
--- a/src/ExportsService.ts
+++ b/src/ExportsService.ts
@@ -79,7 +79,8 @@ function relativize(path: string): string {
 }
 
 // Paths for emitted build files
-// NOTE: the paths here are lifted to the root level (dist)
+// NOTE: the paths here are ./dist if there are no root-entrypoints,
+//       and ./dist/src if there are.
 function tsToJs(file: string): string {
   return relativize(file.replace(/\.tsx?$/, '.js'))
 }
diff --git a/tests/e2e.test.ts b/tests/e2e.test.ts
index a9d56f2..9e60c25 100644
--- a/tests/e2e.test.ts
+++ b/tests/e2e.test.ts
@@ -31,10 +31,17 @@ describe('test projects', () => {
         // Used to test multi-entrypoint root based dual libs
         // ------------------------------------------------
         'multi-root-dual',
+        //
+        // NOTE: multi-entrypoint src based libs will not pass node-10 tests
+        //
         // ------------------------------------------------
         // Used to test single-entrypoint src based dual libs
         // ------------------------------------------------
         'single-src-dual',
+        // ------------------------------------------------
+        // Used to test single-entrypoint root based dual libs
+        // ------------------------------------------------
+        'single-root-dual',
       ]),
     ),
   )(
diff --git a/tests/test-projects/single-root-dual/.gitignore b/tests/test-projects/single-root-dual/.gitignore
new file mode 100644
index 0000000..3c3629e
--- /dev/null
+++ b/tests/test-projects/single-root-dual/.gitignore
@@ -0,0 +1 @@
+node_modules
diff --git a/tests/test-projects/single-root-dual/foo.foo.ts b/tests/test-projects/single-root-dual/foo.foo.ts
new file mode 100644
index 0000000..0de7c69
--- /dev/null
+++ b/tests/test-projects/single-root-dual/foo.foo.ts
@@ -0,0 +1,11 @@
+import { bar } from './src/foo.bar.js'
+
+/**
+ * What is it? Who knows!
+ *
+ * @remarks
+ *   I have nothing to say
+ */
+export const Foo = bar.baz === 'baz' ? 'bar' : 'foo'
+
+export type Bar = typeof bar
diff --git a/tests/test-projects/single-root-dual/package.json b/tests/test-projects/single-root-dual/package.json
new file mode 100644
index 0000000..25fd272
--- /dev/null
+++ b/tests/test-projects/single-root-dual/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "single-root-dual",
+  "version": "0.0.1",
+  "devDependencies": {
+    "@fp-tx/build-tools": "file:../../../dist"
+  }
+}
diff --git a/tests/test-projects/single-root-dual/src/baz.ts b/tests/test-projects/single-root-dual/src/baz.ts
new file mode 100644
index 0000000..3e0c28b
--- /dev/null
+++ b/tests/test-projects/single-root-dual/src/baz.ts
@@ -0,0 +1 @@
+export type Baz = { baz: 'baz' }
diff --git a/tests/test-projects/single-root-dual/src/foo.bar.ts b/tests/test-projects/single-root-dual/src/foo.bar.ts
new file mode 100644
index 0000000..43eaaf5
--- /dev/null
+++ b/tests/test-projects/single-root-dual/src/foo.bar.ts
@@ -0,0 +1,6 @@
+import { type Baz } from './baz.js'
+
+/** @public */
+export const bar: Baz = {
+  baz: 'baz',
+}
diff --git a/tests/test-projects/single-root-dual/tsconfig.json b/tests/test-projects/single-root-dual/tsconfig.json
new file mode 100644
index 0000000..c91acac
--- /dev/null
+++ b/tests/test-projects/single-root-dual/tsconfig.json
@@ -0,0 +1,15 @@
+{
+  "compilerOptions": {
+    "module": "NodeNext",
+    "target": "ESNext",
+    "moduleResolution": "NodeNext",
+    "noEmit": true,
+    "strict": true,
+    "skipLibCheck": false,
+    "allowSyntheticDefaultImports": true,
+    "forceConsistentCasingInFileNames": true,
+    "types": []
+  },
+  "include": ["./src/*.ts", "./*.ts"],
+  "exclude": []
+}
diff --git a/tests/test-projects/single-root-dual/tsup.config.cjs b/tests/test-projects/single-root-dual/tsup.config.cjs
new file mode 100644
index 0000000..ca52357
--- /dev/null
+++ b/tests/test-projects/single-root-dual/tsup.config.cjs
@@ -0,0 +1,19 @@
+const { makeConfig } = require('@fp-tx/build-tools')
+
+module.exports = makeConfig(
+  {
+    basePath: '.',
+    buildType: 'dual',
+    buildMode: {
+      type: 'Single',
+      entrypoint: './foo.foo.ts',
+    },
+    srcDir: './src',
+    outDir: './dist',
+    copyFiles: [],
+    iife: true,
+  },
+  {
+    clean: true,
+  },
+)