🐛 Bug Report — Error running many tests

[samuelcolvin]

I get the following error when running tests locally (unfortunately the codebase is closed source):

TypeError: fetch failed
 ❯ fetch ../node_modules/undici/index.js:124:13
 ❯ process.processTicksAndRejections node:internal/process/task_queues:105:5
 ❯ MessagePort.<anonymous> [worker eval]:28:22

Caused by: Error: connect EADDRNOTAVAIL 127.0.0.1:53353 - Local (0.0.0.0:0)
 ❯ internalConnect node:net:1110:16
 ❯ defaultTriggerAsyncIdScope node:internal/async_hooks:472:18
 ❯ node:net:1356:9
 ❯ process.processTicksAndRejections node:internal/process/task_queues:85:11

I see it at the end, when all tests have passed.

I don't get this:

• in github actions (with the same setup otherwise)
• when running tests for each file independently
• with singleWorker: true

But when running locally with just npm run test or CI=1 npm run test I get this 100% of the time.

Test output when tests pass:

 Test Files  26 passed (26)
      Tests  258 passed | 3 skipped (261)
   Start at  12:25:22
   Duration  102.88s (transform 471ms, setup 8.79s, collect 334ms, tests 92.94s, environment 0ms, prepare 73ms)