fix: fix sourcemap in vm pools (#5063)

packages/vitest/src/runtime/runVmTests.ts

@@ -5,6 +5,7 @@ import timers from 'node:timers'
 import { performance } from 'node:perf_hooks'
 import { startTests } from '@vitest/runner'
 import { createColors, setupColors } from '@vitest/utils'
+import { installSourcemapsSupport } from 'vite-node/source-map'
 import { setupChaiConfig } from '../integrations/chai/config'
 import { startCoverageInsideWorker, stopCoverageInsideWorker } from '../integrations/coverage'
 import type { ResolvedConfig } from '../types'
@@ -44,6 +45,10 @@ export async function run(files: string[], config: ResolvedConfig, executor: Vit
     timers,
   }
 
+  installSourcemapsSupport({
+    getSourceMap: source => workerState.moduleCache.getSourceMap(source),
+  })
+
   await startCoverageInsideWorker(config.coverage, executor)
 
   if (config.chaiConfig)

test/stacktraces/test/__snapshots__/runner.test.ts.snap

@@ -21,6 +21,28 @@ Error: Something truly horrible has happened!
 "
 `;
 
+exports[`stacktrace in vmThreads 1`] = `
+"⎯⎯⎯⎯⎯⎯⎯ Failed Tests 1 ⎯⎯⎯⎯⎯⎯⎯
+
+ FAIL  error-with-stack.test.js > error in deps
+Error: Something truly horrible has happened!
+ ❯ d error-with-stack.test.js:20:9
+     18| 
+     19| function d() {
+     20|   throw new Error('Something truly horrible has happened!')
+       |         ^
+     21| }
+     22| 
+ ❯ c error-with-stack.test.js:16:3
+ ❯ b error-with-stack.test.js:12:3
+ ❯ a error-with-stack.test.js:8:3
+ ❯ error-with-stack.test.js:4:3
+
+⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯[1/1]⎯
+
+"
+`;
+
 exports[`stacktrace should print error frame source file correctly > error-in-deps > error-in-deps 1`] = `
 "⎯⎯⎯⎯⎯⎯⎯ Failed Tests 1 ⎯⎯⎯⎯⎯⎯⎯
 

test/stacktraces/test/runner.test.ts

@@ -66,3 +66,14 @@ describe('stacktrace filtering', async () => {
     expect(stderr).toMatchSnapshot('stacktrace-filtering')
   }, 30000)
 })
+
+it('stacktrace in vmThreads', async () => {
+  const root = resolve(__dirname, '../fixtures')
+  const testFile = resolve(root, './error-with-stack.test.js')
+  const { stderr } = await runVitest({
+    root,
+    pool: 'vmThreads',
+  }, [testFile])
+
+  expect(stderr).toMatchSnapshot()
+}, 3000)