avajs/ava

Print useful message when worker threads cannot be used due to Node.js flags

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#3025 opened on May 18, 2022

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enhancementhelp wantedscope:reportersscope:test-environment

Description

See discussion in https://github.com/avajs/ava/pull/3015. Certain Node.js flags stop worker threads from working. We should recognize that error (ERR_WORKER_INVALID_EXEC_ARGV) and print a useful error message so users know to disable worker threads in AVA.

Contributor guide

Tech stack
nodejsjavascript
Domain
testingdeveloper experience
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Basic Node.js knowledgeFamiliarity with AVA test runner
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65
Research direction
Investigate the error handling in AVA, specifically how worker threads are managed. Reference the discussion in PR #3015 to understand the exact Node.js flags that cause the error. Look at the existing error handling mechanism in the AVA codebase to determine where to add the detection of `ERR WORKER INVALID EXEC ARGV`. Suggest a location in the code (e.g., in the worker setup file) and propose a message that guides users to disable worker threads.