storybook: Storyshots is leaking memory

Bug or support request summary

Bug

Steps to reproduce

See https://github.com/SimenB/storyshots-leak for example, but every single installation of storyshots (at least for React, haven’t tested others) should reproduce without issue following the steps in the linked README.

To satisfy template:

Install and setup storyshots
Run jest
See leakage either through Jest’s builtin capabilities (logHeapUsage and detectLeaks) or using some OS tool to see memory usage.

Please specify which version of Storybook and optionally any affected addons that you’re running

"@storybook/addon-storyshots": "^3.3.15",
"@storybook/react": "^3.3.15",

Affected platforms

Jest@22.4.3

Screenshots / Screencast / Code Snippets (Optional)

(A bonus would be to remove the info => Loading custom .babelrc text…)

About this issue

Original URL
State: closed
Created 6 years ago
Reactions: 17
Comments: 15 (5 by maintainers)

Most upvoted comments

I’ve ran into this issue too and while waiting for the fix, we fixed it by mocking @storybook/core/server. This solution was inspired by https://github.com/storybookjs/storybook/issues/3286#issuecomment-595011324 Thank you @jrmurad

jest.mock('@storybook/core/server', () => ({ toRequireContext: require('@storybook/core/dist/server/preview/to-require-context').toRequireContext }));

Also here is a great article that helped me a lot finding memory leaks : https://chanind.github.io/javascript/2019/10/12/jest-tests-memory-leak.html

vidal7 on Sep 21, 2020

This is now causing issues for our workflow as well. We were unable to upgrade our storybook dependencies (including storyshots) from version 5.2.6 to 5.3.18 as our jest run would just fail with memory allocation errors.

anuraags on May 18, 2020