diff --git a/packages/insomnia-inso/src/commands/__mocks__/insomnia-testing.ts b/packages/insomnia-inso/src/commands/__mocks__/insomnia-testing.ts
index 1b75fbe6f0..dab593a88d 100644
--- a/packages/insomnia-inso/src/commands/__mocks__/insomnia-testing.ts
+++ b/packages/insomnia-inso/src/commands/__mocks__/insomnia-testing.ts
@@ -1,6 +1,5 @@
 import { vi } from 'vitest';
 
 export const generate = vi.fn();
-export const generateToFile = vi.fn();
 export const runTests = vi.fn();
 export const runTestsCli = vi.fn();
diff --git a/packages/insomnia-testing/src/generate/index.ts b/packages/insomnia-testing/src/generate/index.ts
index 002df0c221..bde2b2d242 100644
--- a/packages/insomnia-testing/src/generate/index.ts
+++ b/packages/insomnia-testing/src/generate/index.ts
@@ -1,6 +1,6 @@
 import type { Test, TestSuite } from './generate';
 
 export { generate } from './generate';
-export { generateToFile } from './generate-to-file';
+
 
 export type { Test, TestSuite };
diff --git a/packages/insomnia-testing/src/index.ts b/packages/insomnia-testing/src/index.ts
index 129219b034..2d4f982d6c 100644
--- a/packages/insomnia-testing/src/index.ts
+++ b/packages/insomnia-testing/src/index.ts
@@ -1,7 +1,6 @@
 import type { Test, TestSuite } from './generate';
 import type { TestResults } from './run';
 export { generate } from './generate';
-export { generateToFile } from './generate/generate-to-file';
 
 export { runTests, runTestsCli } from './run';
 
diff --git a/packages/insomnia/src/insomnia-testing.renderer.ts b/packages/insomnia/src/insomnia-testing.renderer.ts
new file mode 100644
index 0000000000..49a078c758
--- /dev/null
+++ b/packages/insomnia/src/insomnia-testing.renderer.ts
@@ -0,0 +1,4 @@
+// Renderer-safe subset of insomnia-testing. Excludes Node.js-only modules (run.ts, generate-to-file.ts).
+export { generate } from '../../insomnia-testing/src/generate/generate';
+export type { Test, TestSuite } from '../../insomnia-testing/src/generate/generate';
+export type { TestResults } from '../../insomnia-testing/src/run/entities';
diff --git a/packages/insomnia/vite.config.ts b/packages/insomnia/vite.config.ts
index a4c82b07db..7ddcca83ff 100644
--- a/packages/insomnia/vite.config.ts
+++ b/packages/insomnia/vite.config.ts
@@ -52,6 +52,8 @@ export default defineConfig(({ mode }) => {
         // These must appear before the '~' catch-all so the specific path wins.
         '~/network/network-adapter': path.resolve(__dirname, './src/network/network-adapter.renderer'),
         '~/templating/render-adapter': path.resolve(__dirname, './src/templating/render-adapter.renderer'),
+        // Redirect to a renderer-safe subset that excludes Node.js-only modules (run.ts, generate-to-file.ts).
+        'insomnia-testing': path.resolve(__dirname, './src/insomnia-testing.renderer.ts'),
         '~': path.resolve(__dirname, './src'),
         // Shim Node's `path` module for browser-safe dependencies (e.g. mime-types uses path.extname).
         'path': path.resolve(__dirname, './src/path-shim.ts'),