jest worker encountered 4 child process exceptions exceeding retry limit fails bug
jest worker encountered 4 child process exceptions exceeding retry limit fails bug
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jest worker encountered 4 child process exceptions exceeding retry limit fails bug
Raises the file-descriptor limit for pytest-xdist workers in CI. Use when parallel runs fail with OSError: [Errno 24] Too many open files. Covers confirming the limit, raising it with ulimit in the CI step, reducing worker count, and checking for leaked handles. Not for the same error without xdist.
Handles Cypress failures caused by uncaught exceptions from the application under test in CI. Use when the run fails with We detected an uncaught exception from your application. Covers extracting the app's real stack trace, deciding whether it is an app bug or noise, and scoping the uncaught:exception handler. Not fo…
Tracks down the unhandled promise rejection that fails a vitest CI run. Use when the run fails with Unhandled Rejection and no clear source. Covers adding a temporary stack-printing rejection listener, running until it fires, and fixing the floating promise at its source. Not for synchronously thrown errors or intenti…
Fixes Node heap exhaustion during jest runs in CI. Use when the run dies with FATAL ERROR: Reached heap limit or Allocation failed - JavaScript heap out of memory. Covers raising the heap with NODE_OPTIONS, cutting worker memory pressure, and finding the leak with open-handle and heap logging. Not for out-of-memory in…
Fixes Playwright component-test mount failures caused by Vite configuration errors. Use when the mount step fails with a Vite error before the component renders. Not for runtime errors inside the component.
Fixes playwright 'Target crashed' failures in CI. Use when the browser process dies mid-suite. Covers capturing crash diagnostics, checking memory, and mitigations (parallelism, GPU, sharding). Not for test-assertion failures.
Fixes Vitest out-of-memory crashes when the threads pool runs a large suite. Use when workers die with heap errors and the suite is big. Not for OOM in a single test file or for leaks in application code.
Vectle found the following relevant skills: - dbt found two resources with the same name" duplicate model - DUPLICATE_MASTER_LABEL: duplicate value found" salesforce error…
Problem outcome: unknown
Public search query: jest haste module naming collision: duplicate mock found
Problem outcome: unknown
Fixes jscodeshift 'Maximum call stack size exceeded' in a recursive visitor. Use it when a codemod transform recurses without a proper base case or walks the tree manually instead of using the visitor traversal. Key trigger: the stack trace repeating the transform's own function name.
Vectle found the following relevant skills: - RangeError: Maximum call stack size exceeded (Next.js App Dir) - A Serverless Function has exceeded the unzipped maximum size of 250 MB
Problem outcome: unknown
Public search query: jscodeshift: Maximum call stack size exceeded in recursive visitor
Problem outcome: unknown
Fixes the Jest "Exceeded timeout of 5000 ms for a test" error that only hits on CI's slowest shard. It shows how to identify the genuinely slow test, raise its timeout without masking real slowdowns, and spread suite time evenly across shards. Use when a Jest test passes locally but times out on one CI shard while oth…
Vectle found the following relevant skills: - jest "Exceeded timeout of 5000 ms for a test" only on CI's slowest shard: how to fix - jest "Exceeded timeout of 5000 ms for a test" only on CI's slowest shard: how to fix
Problem outcome: unknown
Public search query: jest Exceeded timeout of 5000 ms for a test only on CI's slow
Problem outcome: unknown
Recovers the real error hiding behind jest's 'thrown: Exceeded timeout' message when CI logs show no stack trace. Shows how to isolate the test, use --detectOpenHandles to find the hanging call, and fix the unsettled promise or missing await instead of just raising the timeout. Use when a jest test times out in CI wit…
Fixes the Jest "Exceeded timeout of 5000 ms for a test" error that only hits on CI's slowest shard. It shows how to identify the genuinely slow test, raise its timeout without masking real slowdowns, and spread suite time evenly across shards. Use when a Jest test passes locally but times out on one CI shard while oth…
Vectle found the following relevant skills: - jest "Exceeded timeout of 5000 ms for a test" only on CI's slowest shard: how to fix - jest Exceeded timeout of 5000 ms for a test: how to fix
Problem outcome: unknown
Public search query: jest Exceeded timeout of 5000 ms for a test only on CI's slow
Problem outcome: unknown
Vectle found the following relevant skills: - jest "Exceeded timeout of 5000 ms for a test" only on CI's slowest shard: how to fix - jest Exceeded timeout of 5000 ms for a test: how to fix
Problem outcome: unknown
Public search query: jest thrown: Exceeded timeout with no stack trace in CI logs: how
Problem outcome: unknown
Debugs Jest "TypeError: Cannot read properties of undefined (reading 'map')" that only appears under --runInBand in CI. Explains how serial execution changes module state sharing versus parallel workers, and how to find the module-level state or mock that behaves differently in-band. Use when a test passes in parallel…
Vectle found the following relevant skills: - TelnyxWebhook.verify() throws TypeError: Cannot read properties of undefined (reading 'detached') in ESM - [TypeError: Cannot read properties of undefined (reading 'current') when adding --turbo in N…
Problem outcome: unknown
Public search query: jest TypeError: Cannot read properties of undefined (reading 'map'
Problem outcome: unknown