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jest-leak-detector
Advanced tools
Module for verifying whether an object has been garbage collected or not.
Module for verifying whether an object has been garbage collected or not.
Internally creates a weak reference to the object, and forces garbage collection to happen. If the reference is gone, it meant no one else was pointing to the object.
let reference = {};
const detector = new LeakDetector(reference);
// Reference is held in memory.
console.log(detector.isLeaked()); // true
// We destroy the only reference to the object.
reference = null;
// Reference is gone.
console.log(detector.isLeaked()); // false
23.0.0
[expect]
Expose getObjectSubset
, iterableEquality
, and subsetEquality
(#6210)[jest-snapshot]
Add snapshot property matchers (#6210)[jest-config]
Support jest-preset.js files within Node modules (#6185)[jest-cli]
Add --detectOpenHandles
flag which enables Jest to potentially track down handles keeping it open after tests are complete. (#6130)[jest-jasmine2]
Add data driven testing based on jest-each
(#6102)[jest-matcher-utils]
Change "suggest to equal" message to be more advisory (#6103)[jest-message-util]
Don't ignore messages with vendor
anymore (#6117)[jest-validate]
Get rid of jest-config
dependency (#6067)[jest-validate]
Adds option to inject deprecationEntries
(#6067)[jest-snapshot]
[BREAKING] Concatenate name of test, optional snapshot name and count (#6015)[jest-runtime]
Allow for transform plugins to skip the definition process method if createTransformer method was defined. (#5999)[expect]
Add stack trace for async errors (#6008)[jest-jasmine2]
Add stack trace for timeouts (#6008)[jest-jasmine2]
Add stack trace for thrown non-Error
s (#6008)[jest-runtime]
Prevent modules from marking themselves as their own parent (#5235)[jest-mock]
Add support for auto-mocking generator functions (#5983)[expect]
Add support for async matchers (#5919)[expect]
Suggest toContainEqual (#5953)[jest-config]
Export Jest's default options (#5948)[jest-editor-support]
Move coverage
to ProjectWorkspace.collectCoverage
(#5929)[jest-editor-support]
Add coverage
option to runner (#5836)[jest-haste-map]
Support extracting dynamic import
s (#5883)[expect]
Improve output format for mismatchedArgs in mock/spy calls. (#5846)[jest-cli]
Add support for using --coverage
in combination with watch mode, --onlyChanged
, --findRelatedTests
and more (#5601)[jest-jasmine2]
[BREAKING] Adds error throwing and descriptive errors to it
/ test
for invalid arguments. [jest-circus]
Adds error throwing and descriptive errors to it
/ test
for invalid arguments (#5558)[jest-matcher-utils]
Add isNot
option to matcherHint
function (#5512)[jest-config]
Add <rootDir>
to runtime files not found error report (#5693)[expect]
Make toThrow matcher pass only if Error object is returned from promises (#5670)[expect]
Add isError to utils (#5670)[expect]
Add inverse matchers (expect.not.arrayContaining
, etc., #5517)[expect]
expect.extend
now also extends asymmetric matchers (#5503)[jest-mock]
Update spyOnProperty
to support spying on the prototype chain (#5753)[jest-mock]
Add tracking of return values in the mock
property (#5752)[jest-mock]
Add tracking of thrown errors in the mock
property (#5764)[expect]
Add nthCalledWith spy matcher (#5605)[jest-cli]
Add isSerial
property that runners can expose to specify that they can not run in parallel (#5706)[expect]
Add .toBeCalledTimes
and toHaveBeenNthCalledWith
aliases (#5826)[jest-cli]
Interactive Snapshot Mode improvements (#5864)[jest-editor-support]
Add no-color
option to runner (#5909)[jest-jasmine2]
Pretty-print non-Error object errors (#5980)[jest-message-util]
Include column in stack frames (#5889)[expect]
Introduce toStrictEqual (#6032)[expect]
Add return matchers (#5879)[jest-cli]
Improve snapshot summaries (#6181)[expect]
Include custom mock names in error messages (#6199)[jest-diff]
Support returning diff from oneline strings (#6221)[expect]
Improve return matchers (#6172)[jest-cli]
Overhaul watch plugin hooks names (#6249)[jest-mock]
[BREAKING] Include tracked call results in serialized mock (#6244)[jest-cli]
Fix stdin encoding to utf8 for watch plugins. (#6253)[expect]
Better detection of DOM Nodes for equality (#6246)[jest-cli]
Fix misleading action description for F key when in "only failed tests" mode. (#6167)[jest-worker]
Stick calls to workers before processing them (#6073)[babel-plugin-jest-hoist]
Allow using console
global variable (#6075)[jest-jasmine2]
Always remove node core message from assert stack traces (#6055)[expect]
Add stack trace when expect.assertions
and expect.hasAssertions
causes test failures. (#5997)[jest-runtime]
Throw a more useful error when trying to require modules after the test environment is torn down (#5888)[jest-mock]
[BREAKING] Replace timestamps with invocationCallOrder
(#5867)[jest-jasmine2]
Install sourcemap-support
into normal runtime to catch runtime errors (#5945)[jest-jasmine2]
Added assertion error handling inside afterAll hook
(#5884)[jest-cli]
Remove the notifier actions in case of failure when not in watch mode. (#5861)[jest-mock]
Extend .toHaveBeenCalled return message with outcome (#5951)[jest-runner]
Assign process.env.JEST_WORKER_ID="1"
when in runInBand mode (#5860)[jest-cli]
Add descriptive error message when trying to use globalSetup
/globalTeardown
file that doesn't export a function. (#5835)[expect]
Do not rely on instanceof RegExp
, since it will not work for RegExps created inside of a different VM (#5729)[jest-resolve]
Update node module resolution algorithm to correctly handle symlinked paths (#5085)[jest-editor-support]
Update Settings
to use spawn in shell option (#5658)[jest-cli]
Improve the error message when 2 projects resolve to the same config (#5674)[jest-runtime]
remove retainLines from coverage instrumentation (#5692)[jest-cli]
Fix update snapshot issue when using watchAll (#5696)[expect]
Fix rejects.not matcher (#5670)[jest-runtime]
Prevent Babel warnings on large files (#5702)[jest-mock]
Prevent mockRejectedValue
from causing unhandled rejection (#5720)[pretty-format]
Handle React fragments better (#5816)[pretty-format]
Handle formatting of React.forwardRef
and Context
components (#6093)[jest-cli]
Switch collectCoverageFrom back to a string (#5914)[jest-regex-util]
Fix handling regex symbols in tests path on Windows (#5941)[jest-util]
Fix handling of NaN/Infinity in mock timer delay (#5966)[jest-resolve]
Generalise test for package main entries equivalent to ".". (#5968)[jest-config]
Ensure that custom resolvers are used when resolving the configuration (#5976)[website]
Fix website docs (#5853)[expect]
Fix isEqual Set and Map to compare object values and keys regardless of order (#6150)[pretty-format]
[BREAKING] Remove undefined props from React elements (#6162)[jest-haste-map]
Properly resolve mocked node modules without package.json defined (#6232)[jest-runner]
Move sourcemap installation from jest-jasmine2
to jest-runner
(#6176)[jest-cli]
Use yargs's built-in version
instead of rolling our own (#6215)[docs]
Add explanation on how to mock methods not implemented in JSDOM[jest-jasmine2]
Simplify Env.execute
and TreeProcessor to setup and clean resources for the top suite the same way as for all of the children suites (#5885)[babel-jest]
[BREAKING] Always return object from transformer (#5991)[*]
Run Prettier on compiled output (#5858)[jest-cli]
Add fileChange hook for plugins (#5708)[docs]
Add docs on using jest.mock(...)
(#5648)[docs]
Mention Jest Puppeteer Preset (#5722)[docs]
Add jest-community section to website (#5675)[docs]
Add versioned docs for v22.4 (#5733)[docs]
Improve Snapshot Testing Guide (#5812)[jest-runtime]
[BREAKING] Remove jest.genMockFn
and jest.genMockFunction
(#6173)[jest-message-util]
Avoid adding unnecessary indent to blank lines in stack traces (#6211)FAQs
Module for verifying whether an object has been garbage collected or not.
The npm package jest-leak-detector receives a total of 19,016,380 weekly downloads. As such, jest-leak-detector popularity was classified as popular.
We found that jest-leak-detector demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 5 open source maintainers collaborating on the project.
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