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jestjs

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jest
Delightful JavaScript Testing.

TypeScript · 45461 stars

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[Feature]: Migrate from istanbuljs/istanbuljs to @vitest/istanbuljs Open

:rocket: Feature Request

Difficulty 3/5 1-2 days Newbie friendliness 65/100

jestjs/jest#16398 · 1 reaction · Opened Aug 26, 2026
[Bug]: Ability to suppress auto generated urls from snapshots Open

Bug Report Needs Triage

Difficulty 3/5 1-2 days Newbie friendliness 55/100

jestjs/jest#16396 · Opened Aug 25, 2026
[ESM] Concurrent `import()` of modules sharing a top-level-await dependency throws "can not be resolved on module ... that is not linked" Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

jestjs/jest#16393 · 1 comment · Opened Aug 21, 2026
[Feature]: Extend timer mocks to cover node:timers/promises Open

:rocket: Feature Request

Difficulty 4/5 3-5 days Newbie friendliness 48/100

jestjs/jest#16392 · 2 reactions · Opened Aug 21, 2026
Failed build: Node Nightly CI Open

build failed

Difficulty 4/5 3-5 days Newbie friendliness 30/100

jestjs/jest#16382 · 9 comments · Opened Aug 20, 2026
[Feature]: Allow ignoring noisy stack trace lines Open

:rocket: Feature Request

Difficulty 4/5 3-5 days Newbie friendliness 50/100

jestjs/jest#16362 · 1 comment · Opened Aug 17, 2026
[Bug]: npm 12.x dropped support for post install script Open

Bug Report Needs Triage

Difficulty 4/5 3-5 days Newbie friendliness 52/100

jestjs/jest#16279 · 4 comments · Opened Jul 13, 2026
[Bug]: Untested files are missing when collecting coverage in multi-project configuration Open

Bug Report Needs Triage Stale

Difficulty 3/5 1-2 days Newbie friendliness 65/100

jestjs/jest#16278 · 2 comments · Opened Jul 12, 2026
[Bug]: ESM-CJS interoperability issue of getting incorrectly imported default module Open

ES Modules Pinned

Difficulty 4/5 3-5 days Newbie friendliness 50/100

jestjs/jest#16144 · 11 comments · Opened May 8, 2026
[Feature]: test.step/it.step (like in playwright) for the integrated tests (with @testing-library/react, for example) Open

:rocket: Feature Request Help Wanted Pinned

Difficulty 5/5 Over a week Newbie friendliness 38/100

jestjs/jest#16027 · 6 comments · Opened Apr 2, 2026
[Bug]: Updating "jest-environment-jsdom" to update underlying jsdom Open

Bug Report Needs Triage

Difficulty 3/5 1-2 days Newbie friendliness 58/100

jestjs/jest#16000 · 10 comments · 4 reactions · Opened Mar 17, 2026
[Bug]: (types) spyOn has trouble selecting the correct overload for some methods Open

Bug Report Needs Triage

Difficulty 4/5 3-5 days Newbie friendliness 48/100

jestjs/jest#15998 · 11 comments · Opened Mar 13, 2026
[Bug]: Prettier v3 doesn't work with Jest Open

ES Modules Pinned

Difficulty 4/5 3-5 days Newbie friendliness 52/100

jestjs/jest#15816 · 13 comments · 2 reactions · Opened Sep 9, 2025
[Feature]: Allow listening to an `AbortSignal` for test timeouts Open

:rocket: Feature Request Stale

Difficulty 5/5 Over a week Newbie friendliness 35/100

jestjs/jest#15804 · 27 comments · 2 reactions · Opened Aug 29, 2025
[Feature]: `jest.mockWindowLocation` Open

:rocket: Feature Request Pinned

Difficulty 4/5 3-5 days Newbie friendliness 48/100

jestjs/jest#15776 · 20 comments · 68 reactions · Opened Aug 5, 2025
[Bug]: jest.spyOn() does not work on ESM outside of the test scope Open

Bug Report Needs Triage

Difficulty 4/5 3-5 days Newbie friendliness 45/100

jestjs/jest#15745 · 29 comments · 3 reactions · Opened Jul 23, 2025
[Bug]: jest-circus/build/runner.js in the testRunner option was not found on MacOS/jest30 Open

Bug Report Needs Triage Pinned

Difficulty 4/5 3-5 days Newbie friendliness 38/100

jestjs/jest#15724 · 19 comments · 4 reactions · Opened Jul 7, 2025
[Bug]: Jest 30 seems to be 1.5x slower than v29 Open

Bug Report Needs Triage

Difficulty 4/5 3-5 days Newbie friendliness 45/100

jestjs/jest#15718 · 43 comments · 27 reactions · Opened Jul 2, 2025
[Bug]: Failed to parse the TypeScript config file with typescript@5.6.2 Open

Bug Report Needs Triage Pinned

Difficulty 4/5 3-5 days Newbie friendliness 30/100

jestjs/jest#15312 · 39 comments · 23 reactions · Opened Sep 18, 2024
[Feature]: Support Babel v8 Open

:rocket: Feature Request Pinned

Difficulty 5/5 Over a week Newbie friendliness 35/100

jestjs/jest#15152 · 22 comments · 4 reactions · Opened Jun 29, 2024
[Bug]: DataCloneError: Symbol(jest.asymmetricMatcher) could not be cloned using `--workerThreads`. Open

:bug: Bug Help Wanted Pinned

Difficulty 3/5 1-2 days Newbie friendliness 58/100

jestjs/jest#15078 · 10 comments · 3 reactions · Opened May 21, 2024
[Bug]: New SERIALIZABLE_PROPERTIES is only used by matcher-utils Open

Bug Report Needs Triage Pinned

Difficulty 4/5 3-5 days Newbie friendliness 25/100

jestjs/jest#15073 · 4 comments · Opened May 17, 2024
[Feature]: Show progress of tests as they run Open

:rocket: Feature Request Pinned

Difficulty 5/5 Over a week Newbie friendliness 35/100

jestjs/jest#14836 · 16 comments · 9 reactions · Opened Jan 7, 2024
[Bug]: `findRepos` works slowly with a large number of `projects` Open

Bug Report Needs Triage Pinned

Difficulty 4/5 3-5 days Newbie friendliness 35/100

jestjs/jest#14818 · 7 comments · 3 reactions · Opened Dec 30, 2023
[Feature]: show full error or object in promised `expect` Open

:rocket: Feature Request Pinned

Difficulty 4/5 3-5 days Newbie friendliness 35/100

jestjs/jest#14750 · 13 comments · Opened Dec 11, 2023
[Feature]: Support ability to recompute cache key for certain files more often Open

:rocket: Feature Request Help Wanted Pinned

Difficulty 5/5 Over a week Newbie friendliness 42/100

jestjs/jest#14630 · 16 comments · Opened Oct 20, 2023
[Bug]: Jest leaks memory in ESM mode Open

ES Modules Pinned Upstream Bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

jestjs/jest#14605 · 23 comments · 13 reactions · Opened Oct 5, 2023
[Bug]: Constructing a mocked class does not return an object typed as a mock, but rather one typed with the original class' type Open

:bug: Bug Help Wanted Pinned TypeScript

Difficulty 3/5 1-2 days Newbie friendliness 70/100

jestjs/jest#14458 · 8 comments · Opened Aug 30, 2023
[Bug]: workerThreads break --watch-all when function does not meet expected. Open

:bug: Bug Help Wanted Pinned

Difficulty 4/5 3-5 days Newbie friendliness 48/100

jestjs/jest#14423 · 6 comments · Opened Aug 17, 2023
[Bug]: Untested code is not transformed when using v8 coverage collector Open

:bug: Bug Help Wanted Needs Triage Pinned

Difficulty 4/5 3-5 days Newbie friendliness 52/100

jestjs/jest#14422 · 6 comments · 1 reaction · Opened Aug 17, 2023
[Bug]: Mocking bare specifier fails when dependency is provided by `npm link` Open

Bug Report Needs Triage Pinned

Difficulty 4/5 3-5 days Newbie friendliness 48/100

jestjs/jest#14378 · 12 comments · Opened Jul 31, 2023
[Bug]: Jest main process memory usage grows unboundedly with v8 coverage Open

:bug: Bug Pinned

Difficulty 4/5 3-5 days Newbie friendliness 45/100

jestjs/jest#14287 · 4 comments · 4 reactions · Opened Jun 29, 2023
[Bug]: `expect.assertions` fails when using `test.concurrent` Open

:bug: Bug Area: Concurrent Pinned

Difficulty 4/5 3-5 days Newbie friendliness 25/100

jestjs/jest#14263 · 4 comments · 1 reaction · Opened Jun 25, 2023
Dependency Dashboard Open

Pinned

Difficulty 5/5 Over a week Newbie friendliness 15/100

jestjs/jest#14212 · 8 comments · Opened Jun 21, 2023
[Bug]: Object.defineProperty setter gets called twice on a single set Open

Pinned Upstream Bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

jestjs/jest#14186 · 6 comments · Opened Jun 7, 2023
[Bug]: createMockFromModule not mocking class correctly Open

:bug: Bug Help Wanted Pinned

Difficulty 4/5 3-5 days Newbie friendliness 35/100

jestjs/jest#14178 · 9 comments · Opened Jun 2, 2023
[Bug]: Different reporter order leads to `coverageMap` missing in custom reporter starting in Jest 28 Open

:bug: Bug Pinned

Difficulty 4/5 3-5 days Newbie friendliness 45/100

jestjs/jest#14052 · 19 comments · 3 reactions · Opened Apr 4, 2023
[Feature]: Programmatic api to resolve the entire config and run jest Open

:rocket: Feature Request Pinned

Difficulty 5/5 Over a week Newbie friendliness 30/100

jestjs/jest#14034 · 14 comments · 1 reaction · Opened Mar 28, 2023
[Bug]: the jest tests performance dropped badly from node 14 to 19 Open

Bug Report Needs Triage Pinned

Difficulty 4/5 3-5 days Newbie friendliness 25/100

jestjs/jest#13904 · 26 comments · 20 reactions · Opened Feb 13, 2023
[Bug]: Code for inline-snapshots incurs performance penalty even when the feature is not used Open

Bug Report Needs Triage Pinned

Difficulty 3/5 1-2 days Newbie friendliness 35/100

jestjs/jest#13842 · 4 comments · Opened Jan 30, 2023
[Bug]: Strings unexpectedly have no escaping in snapshots? Open

Bug Report Pinned

Difficulty 3/5 1-2 days Newbie friendliness 35/100

jestjs/jest#13776 · 7 comments · Opened Jan 16, 2023
[Feature]: Allow code transformations to work without parsing source Open

:rocket: Feature Request Pinned

Difficulty 4/5 3-5 days Newbie friendliness 35/100

jestjs/jest#13572 · 7 comments · 1 reaction · Opened Nov 7, 2022
[Bug]: jest-config can't import TS file with moduleResolution: node16 Open

Bug Report Needs Triage Pinned

Difficulty 4/5 3-5 days Newbie friendliness 45/100

jestjs/jest#13350 · 46 comments · 9 reactions · Opened Oct 1, 2022
[Feature]: Add expect.soft for setup and soft assertions Open

:rocket: Feature Request Pinned

Difficulty 5/5 Over a week Newbie friendliness 25/100

jestjs/jest#13205 · 5 comments · 16 reactions · Opened Sep 1, 2022
[Feature]: Allow using tsx instead of ts-node for loading TS config files Open

:rocket: Feature Request Help Wanted Pinned

Difficulty 4/5 3-5 days Newbie friendliness 45/100

jestjs/jest#13143 · 28 comments · 81 reactions · Opened Aug 16, 2022
[Feature]: Support loading jest.config.ts as ESM Open

:rocket: Feature Request Pinned TypeScript

Difficulty 4/5 3-5 days Newbie friendliness 45/100

jestjs/jest#13118 · 6 comments · 8 reactions · Opened Aug 11, 2022
[Bug]: jest ts-node ignores provided tsconfig.json Open

ES Modules Help Wanted Pinned TypeScript

Difficulty 3/5 1-2 days Newbie friendliness 52/100

jestjs/jest#12952 · 44 comments · 13 reactions · Opened Jun 20, 2022
[Feature]: Allow esm https network imports Open

:rocket: Feature Request ES Modules Pinned

Difficulty 3/5 1-2 days Newbie friendliness 35/100

jestjs/jest#12897 · 3 comments · Opened Jun 1, 2022
[Feature]: esm/cjs autodetection for TypeScript files Open

:rocket: Feature Request Pinned TypeScript

Difficulty 5/5 Over a week Newbie friendliness 30/100

jestjs/jest#12800 · 20 comments · Opened May 3, 2022
[Bug]: shard option and global coverageThreshold config Open

:bug: Bug Help Wanted Pinned

Difficulty 4/5 3-5 days Newbie friendliness 35/100

jestjs/jest#12751 · 29 comments · 49 reactions · Opened Apr 26, 2022

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