feat(nx-plugin): add vitest support for e2e tests by Copilot · Pull Request #34041 · nrwl/nx

Copilot · 2026-01-07T19:59:43Z

Implementation Plan for Vitest E2E Support

Changes Required:

Changes

Schema updates: Added "vitest" to e2eTestRunner enum in @nx/plugin:plugin generator; added testRunner option to @nx/plugin:e2e-project generator
Implementation: Added addVitest() function that configures Vitest with globalSetup/globalTeardown for local registry management, uses fork pool with singleFork for proper isolation
Config handling: Detects .mts or .ts vitest config files, extracts existing indentation for consistent formatting when injecting global setup/teardown
Dependencies: Uses ensurePackage to dynamically import @nx/vitest only when needed; added as optional peer dependency
Testing: Added e2e test to verify vitest-backed plugins work correctly

Usage

# Generate plugin with Vitest e2e tests
nx g @nx/plugin:plugin my-plugin --e2eTestRunner=vitest

# Or generate e2e project separately
nx g @nx/plugin:e2e-project --pluginName my-plugin --testRunner vitest

Jest remains the default when no testRunner is specified.

Original prompt

This section details on the original issue you should resolve

<issue_title>vitest support for @nrwl/nx-plugin:e2e</issue_title>
<issue_description>

I'd be willing to implement this feature (contributing guide)

Description

I'd like to use Vitest instead of Jest for e2e testing of plugins.

Motivation

I use Vitest for everything else and it makes sense to use it for that as well.

Suggested Implementation

Add option for nx g @nrwl/nx-plugin:plugin to use Vitest

Alternate Implementations

I'm going to skip e2e tests altogether for now as I'm having trouble with Jest and my custom ESM setup.</issue_description>

<agent_instructions>This shouldn't be terribly difficult, you'll need to add a schema option for the e2e test runner to be possible to set it to vitest and scaffold a vitest project instead of a jest project. You'll likely need a separate set of templates for the generated e2e setup, since the current ones are jest tests</agent_instructions>

Comments on the Issue (you are @copilot in this section)
@FrozenPandaz Would someone like to open a PR for this? @AgentEnder Reiterating what @FrozenPandaz said, nothing is technically blocking this feature. It should be as easy as adding a schema option and passing it through to the js generator, but we don't quite have the bandwidth to do this on the core team right now.
It would be a great first issue for a community member.</comment_new>

Fixes vitest support for @nrwl/nx-plugin:e2e #16116

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vercel · 2026-01-07T19:59:48Z

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nx-cloud · 2026-01-07T20:29:18Z

View your CI Pipeline Execution ↗ for commit 4c65167

Command	Status	Duration	Result
`nx affected --targets=lint,test,build,e2e,e2e-c...`	❌ Failed	7m 1s	View ↗
`nx run-many -t check-imports check-lock-files c...`	✅ Succeeded	3s	View ↗
`nx-cloud record -- pnpm nx-cloud conformance:check`	✅ Succeeded	17s	View ↗
`nx build workspace-plugin`	✅ Succeeded	<1s	View ↗
`nx-cloud record -- nx sync:check`	✅ Succeeded	24s	View ↗
`nx-cloud record -- nx format:check`	✅ Succeeded	15s	View ↗
`nx affected -t e2e-macos-local --parallel=1 --b...`	✅ Succeeded	28m 48s	View ↗

☁️ Nx Cloud last updated this comment at 2026-04-18 17:36:25 UTC

AgentEnder · 2026-01-07T20:30:43Z

+    addProjectConfiguration(host, options.projectName, projectConfiguration);
+  }
+
+  const vitestTask = await vitestConfigurationGenerator(host, {


@copilot This call should use ensurePackage, as vitest may not be installed yet. We can't directly import this, though we can import it's types so we can reference them in the dynamic import.

coverageProvider should likely be null, since its e2e we wouldn't really collect coverage.

Updated to use ensurePackage for dynamic import of @nx/vitest and removed explicit coverageProvider since it will use the default. Changes in commit bcce4fe.

AgentEnder · 2026-01-07T20:32:13Z

+    expect(vitestConfig).toContain('globalSetup');
+    expect(vitestConfig).toContain('globalTeardown');


Lets add an e2e test to e2e/plugin that tests that these work for vitest backed plugins, I'm a bit hesitant without it. @copilot

Added e2e test in e2e/plugin/src/nx-plugin.test.ts that verifies plugins can be generated with vitest as the e2e test runner and that the tests execute successfully. Commit 6add8ac.

AgentEnder · 2026-01-07T21:04:51Z

Nx Cloud is proposing a fix for your failed CI:

These changes fix the ESLint dependency-checks error by adding @nx/vitest to the dependencies section of packages/plugin/package.json. The PR introduced code that imports from @nx/vitest/generators, creating a runtime dependency that was not declared in the package manifest.

We verified this fix by re-running plugin:lint.
diff --git a/packages/plugin/package.json b/packages/plugin/package.json
index 9c8f175788..279050c071 100644
--- a/packages/plugin/package.json
+++ b/packages/plugin/package.json
@@ -31,7 +31,8 @@
     "@nx/devkit": "workspace:*",
     "@nx/jest": "workspace:*",
     "@nx/js": "workspace:*",
-    "@nx/eslint": "workspace:*"
+    "@nx/eslint": "workspace:*",
+    "@nx/vitest": "workspace:*"
   },
   "devDependencies": {
     "nx": "workspace:*"
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@copilot this is close, but it should be an optional peer dep

Copilot · 2026-01-07T21:07:16Z

Nx Cloud is proposing a fix for your failed CI:

These changes fix the ESLint dependency-checks error by adding @nx/vitest to the dependencies section of packages/plugin/package.json. The PR ...

Added @nx/vitest as an optional peer dependency in package.json following the same pattern as other optional dependencies in the monorepo. Commit 37cacee.

- Initialize vitestConfigPath with undefined to avoid uninitialized variable - Add explicit error handling when vitest config file is not found - Add comment explaining mts extension precedence - Store regex in variable for better readability Co-authored-by: AgentEnder <6933928+AgentEnder@users.noreply.github.com>

- Extract indentation from existing config for consistent formatting - Add better error handling for test config block not found - Remove redundant undefined initialization - Insert globalSetup/globalTeardown as separate lines to avoid overwriting existing properties Co-authored-by: AgentEnder <6933928+AgentEnder@users.noreply.github.com>

…eProvider - Use ensurePackage to dynamically import @nx/vitest since it may not be installed yet - Import VitestGeneratorSchema type for type safety - Remove explicit coverageProvider since e2e tests don't need coverage collection Co-authored-by: AgentEnder <6933928+AgentEnder@users.noreply.github.com>

Co-authored-by: AgentEnder <6933928+AgentEnder@users.noreply.github.com>

Co-authored-by: Copilot <Copilot@users.noreply.github.com>

Add end-to-end test to verify that plugins can be generated with vitest as the e2e test runner and that the e2e tests execute successfully. Co-authored-by: AgentEnder <6933928+AgentEnder@users.noreply.github.com>

Co-authored-by: Copilot <Copilot@users.noreply.github.com>

Add @nx/vitest as an optional peer dependency instead of a regular dependency to properly declare the runtime dependency while keeping it optional for users who don't use vitest for e2e tests. Co-authored-by: AgentEnder <6933928+AgentEnder@users.noreply.github.com>

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Copilot AI assigned Copilot and AgentEnder Jan 7, 2026

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Copilot AI changed the title ~~[WIP] Add Vitest support for e2e testing of plugins~~ feat(plugin): add vitest support for e2e tests Jan 7, 2026

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AgentEnder force-pushed the copilot/add-vitest-support-e2e branch from 37cacee to 6bf85d6 Compare January 9, 2026 19:17

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Copilot AI and others added 9 commits April 2, 2026 12:37

fix(plugin): remove extra closing brace causing syntax error

7092c91

Co-authored-by: AgentEnder <6933928+AgentEnder@users.noreply.github.com>

chore(plugin): format vitest e2e files

c246768

Co-authored-by: Copilot <Copilot@users.noreply.github.com>

test(plugin): add e2e test for vitest-backed plugin

8737919

Add end-to-end test to verify that plugins can be generated with vitest as the e2e test runner and that the e2e tests execute successfully. Co-authored-by: AgentEnder <6933928+AgentEnder@users.noreply.github.com>

fix(plugin): add missing closing brace and tasks declaration

511f523

Co-authored-by: Copilot <Copilot@users.noreply.github.com>

chore(nx-plugin): fixup code

7fe23b8

AgentEnder force-pushed the copilot/add-vitest-support-e2e branch from 0492be6 to 7fe23b8 Compare April 2, 2026 16:37

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AgentEnder and others added 2 commits April 8, 2026 08:05

Merge branch 'master' into copilot/add-vitest-support-e2e

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Merge branch 'master' into copilot/add-vitest-support-e2e

4c65167

		expect(vitestConfig).toContain('globalSetup');
		expect(vitestConfig).toContain('globalTeardown');

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Implementation Plan for Vitest E2E Support

Changes Required:

Changes

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Alternate Implementations

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