fix(workspace): throw error when browser mode and @vitest/coverage-v8 are used

Author: AriPerkkio

packages/vitest/src/node/core.ts

@@ -336,6 +336,10 @@ export class Vitest {
       names.add(name)
     }
 
+    const isAnyProjectBrowser = resolvedProjects.some(project => project.config.browser.enabled)
+    if (isAnyProjectBrowser && this.config.coverage.enabled && this.config.coverage.provider === 'v8')
+      throw new Error('@vitest/coverage-v8 does not work with --browser. Use @vitest/coverage-istanbul instead')
+
     return resolvedProjects
   }
 

test/config/fixtures/workspace/browser/workspace-with-browser.ts

@@ -0,0 +1,13 @@
+import { defineWorkspace } from "vitest/config";
+
+export default defineWorkspace([
+  {
+    test: {
+      name: "Browser project",
+      browser: {
+         enabled: true,
+         name: 'chrome'
+      },
+    }
+  }
+])

test/config/test/failures.test.ts

@@ -61,6 +61,12 @@ test('v8 coverage provider cannot be used with browser', async () => {
   expect(stderr).toMatch('Error: @vitest/coverage-v8 does not work with --browser. Use @vitest/coverage-istanbul instead')
 })
 
+test('v8 coverage provider cannot be used with browser in workspace', async () => {
+  const { stderr } = await runVitest({ coverage: { enabled: true }, workspace: './fixtures/workspace/browser/workspace-with-browser.ts' })
+
+  expect(stderr).toMatch('Error: @vitest/coverage-v8 does not work with --browser. Use @vitest/coverage-istanbul instead')
+})
+
 test('version number is printed when coverage provider fails to load', async () => {
   const { stderr, stdout } = await runVitest({
     coverage: {