mountSuspended fails: 'set' on proxy: trap returned falsish for property 'error'

[lutejka]

Environment

• Operating System: Darwin
• Node Version: v20.8.1
• Nuxt Version: 3.9.0
• CLI Version: 3.10.0
• Nitro Version: 2.8.1
• Package Manager: [email protected]
• Builder: -
• User Config: devtools, modules
• Runtime Modules: @nuxt/test-utils/[email protected]
• Build Modules: -

Reproduction

https://stackblitz.com/edit/github-gee6qy?file=app.vue

Describe the bug

Once I expose a variable called error within the setup, the component fails to render.
Since everything works within the dev server / build, I suspect this is something within @nuxt/test-utils

After renaming the error variable to something else, the component can be mounted within the tests again.

Additional context

No response

Logs

Vitest caught 1 unhandled error during the test run.
This might cause false positive tests. Resolve unhandled errors to make sure your tests are not affected.

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TypeError: 'set' on proxy: trap returned falsish for property 'error'
 ❯ clonedComponent.render node_modules/@nuxt/test-utils/dist/runtime-utils/index.mjs:128:44
    126|                         renderContext[key] = passedProps[key];
    127|                       }
    128|                       return render.call(this, renderContext, ...args);
       |                                            ^
    129|                     } : void 0,
    130|                     setup: setup ? (props2) => wrappedSetup(props2, setupContext) : void 0
 ❯ renderComponentRoot node_modules/@vue/runtime-core/dist/runtime-core.cjs.js:868:16
 ❯ ReactiveEffect.componentUpdateFn node_modules/@vue/runtime-core/dist/runtime-core.cjs.js:5922:46
 ❯ ReactiveEffect.run node_modules/@vue/reactivity/dist/reactivity.cjs.js:174:19
 ❯ instance.update node_modules/@vue/runtime-core/dist/runtime-core.cjs.js:6053:16
 ❯ setupRenderEffect node_modules/@vue/runtime-core/dist/runtime-core.cjs.js:6063:5
 ❯ eval node_modules/@vue/runtime-core/dist/runtime-core.cjs.js:1613:9

This error originated in "test/app.nuxt.test.ts" test file. It doesn't mean the error was thrown inside the file itself, but while it was running.
The latest test that might've caused the error is "Should mount". It might mean one of the following:
- The error was thrown, while Vitest was running this test.
- This was the last recorded test before the error was thrown, if error originated after test finished its execution.
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