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What is jest-mkdirp-issue?

skevy/jest-mkdirp-issue — explained in plain English

Analysis updated 2026-07-17 · repo last pushed 2016-09-01

JavaScriptAudience · developerComplexity · 1/5DormantSetup · easy

In one sentence

A minimal reproduction repo showing a Jest bug involving mkdirp directory creation, shared so the Jest team could debug and fix the issue.

Mindmap

mindmap
  root((jest-mkdirp-issue))
    What it does
      Reproduces a Jest bug
      Shows mkdirp conflict
    Tech stack
      JavaScript
      Jest
      mkdirp
    Use cases
      Debug the Jest file system bug
      Confirm a fix resolves it
    Audience
      Jest maintainers
      Developers debugging tests
    Notes
      Minimal repro case
      Not a usable tool

Code map

Detail Auto

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filefunction / class

What do people build with it?

USE CASE 1

Clone the repo and run its tests to reliably reproduce a Jest file-system bug.

USE CASE 2

Use it as a reference to verify whether a Jest fix resolves the mkdirp conflict.

USE CASE 3

Study the test setup to understand how Jest handles directory creation during tests.

What is it built with?

JavaScriptJestmkdirp

How does it compare?

skevy/jest-mkdirp-issuea15n/a15na15n/checkout-validation
LanguageJavaScriptJavaScriptJavaScript
Last pushed2016-09-012019-04-072014-09-04
MaintenanceDormantDormantDormant
Setup difficultyeasyeasyeasy
Complexity1/52/52/5
Audiencedevelopergeneraldeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · easy Time to first run · 5min

So what is it?

This is a minimal test case that demonstrates a bug in Jest, a popular JavaScript testing framework. The creator shared it to help the Jest team understand and fix a specific issue that was reported. The core problem relates to how Jest handles file system operations during tests. The issue being reproduced involves mkdirp, a utility that creates directories (including any parent directories that don't exist yet). When Jest runs tests, there can be conflicts or errors when the testing framework tries to manage directories while mkdirp is also being used in the code being tested. Someone working on Jest, or trying to debug their own tests, would clone this repository to see exactly how the problem occurs. By running the tests in this repository, they'd be able to reproduce the bug consistently, which makes it much easier to figure out what's going wrong and how to fix it. This approach is standard practice in software development: instead of describing a problem in words alone, you provide actual code that proves the problem exists. The README is intentionally minimal because this isn't a full project or tool meant for regular use. It's specifically a "reproduction case", a stripped-down example designed for troubleshooting purposes. The real value is in the test files and configuration included in the repository, which show the exact conditions that trigger the bug.

Copy-paste prompts

Prompt 1
Help me understand what bug this Jest reproduction case is demonstrating.
Prompt 2
Show me how to run the tests in this repo to reproduce the mkdirp issue.
Prompt 3
Explain how mkdirp conflicts with Jest's test file handling based on this example.
Prompt 4
Write a similar minimal reproduction case for a different Jest bug I'm seeing.

Frequently asked questions

What is jest-mkdirp-issue?

A minimal reproduction repo showing a Jest bug involving mkdirp directory creation, shared so the Jest team could debug and fix the issue.

What language is jest-mkdirp-issue written in?

Mainly JavaScript. The stack also includes JavaScript, Jest, mkdirp.

Is jest-mkdirp-issue actively maintained?

Dormant — no commits in 2+ years (last push 2016-09-01).

How hard is jest-mkdirp-issue to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is jest-mkdirp-issue for?

Mainly developer.

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