diff --git a/packages/dsv/test/types.ts b/packages/dsv/test/types.ts
index a632ed3ca..54528eef5 100644
--- a/packages/dsv/test/types.ts
+++ b/packages/dsv/test/types.ts
@@ -2,8 +2,6 @@ import type { RollupOptions } from 'rollup';
 
 import dsv from '..';
 
-const parse = (value: string) => (isNaN(+value) ? value : +value);
-
 const config: RollupOptions = {
   input: 'main.js',
   output: {
@@ -15,7 +13,12 @@ const config: RollupOptions = {
       include: 'node_modules/**',
       exclude: ['node_modules/foo/**', 'node_modules/bar/**'],
       processRow(row) {
-        return Object.entries(row).map(([key, value]) => [key, parse(value)]);
+        return {
+          foo: +row.foo,
+          bar: new Date(row.bar),
+          baz: row.baz === 'true',
+          ...row
+        };
       }
     }),
     dsv({