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babel-plugin-jest-hoist
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Package description
The babel-plugin-jest-hoist npm package is designed to work with Jest, a popular JavaScript testing framework. It allows Jest to hoist `jest.mock`, `jest.unmock`, `jest.enableAutomock`, `jest.disableAutomock`, `jest.useFakeTimers`, `jest.useRealTimers`, `jest.setMock`, and `jest.clearAllMocks` calls to the top of the file. This is necessary because Jest needs to isolate modules for mocking before they are used in tests, and doing so manually can be error-prone and tedious.
Hoisting jest.mock calls
Automatically hoists `jest.mock` calls to the top of the file, ensuring that modules are mocked before any other code execution.
"use strict";\njest.mock('moduleName');\nconsole.log('This is a test.');"
Hoisting jest.useFakeTimers calls
Automatically hoists `jest.useFakeTimers` calls to the top, allowing tests to use fake timers from the start.
"use strict";\njest.useFakeTimers();\nconsole.log('This is a test with fake timers.');"
Similar to babel-plugin-jest-hoist, babel-plugin-rewire allows for modifying module internals, such as variables and functions, for testing purposes. However, it focuses on enabling the rewire functionality rather than specifically working with Jest's global methods.
While ts-jest is a TypeScript preprocessor with source map support for Jest that lets you use Jest to test projects written in TypeScript, it includes features for handling module mocking and hoisting in a way that's compatible with TypeScript, offering a similar but TypeScript-focused functionality.
Changelog
29.5.0
[jest-changed-files]
Support Sapling (#13941)[jest-circus, @jest/cli, jest-config]
Add feature to randomize order of tests via CLI flag or through the config file(#12922)[jest-cli, jest-config, @jest/core, jest-haste-map, @jest/reporters, jest-runner, jest-runtime, @jest/types]
Add workerThreads
configuration option to allow using worker threads for parallelization (#13939)[jest-cli]
Export yargsOptions
(#13970)[jest-config]
Add openHandlesTimeout
option to configure possible open handles warning. (#13875)[@jest/create-cache-key-function]
Allow passing length
argument to createCacheKey()
function and set its default value to 16
on Windows (#13827)[jest-message-util]
Add support for AggregateError (#13946 & #13947)[jest-message-util]
Add support for Error causes in test
and it
(#13935 & #13966)[jest-reporters]
Add summaryThreshold
option to summary reporter to allow overriding the internal threshold that is used to print the summary of all failed tests when the number of test suites surpasses it (#13895)[jest-runtime]
Expose @sinonjs/fake-timers
async APIs functions advanceTimersByTimeAsync(msToRun)
(tickAsync(msToRun)
), advanceTimersToNextTimerAsync(steps)
(nextAsync
), runAllTimersAsync
(runAllAsync
), and runOnlyPendingTimersAsync
(runToLastAsync
) (#13981)[jest-runtime, @jest/transform]
Allow V8 coverage provider to collect coverage from files which were not loaded explicitly (#13974)[jest-snapshot]
Add support to cts
and mts
TypeScript files to inline snapshots (#13975)[jest-worker]
Add start
method to worker farms (#13937)[jest-worker]
Support passing a URL as path to worker (#13982)[babel-plugin-jest-hoist]
Fix unwanted hoisting of nested jest
usages (#13952)[jest-circus]
Send test case results for todo
tests (#13915)[jest-circus]
Update message printed on test timeout (#13830)[jest-circus]
Avoid creating the word "testfalse" when takesDoneCallback
is false
in the message printed on test timeout AND updated timeouts test (#13954)[jest-environment-jsdom]
Stop setting document
to null
on teardown (#13972)[@jest/expect-utils]
Update toStrictEqual()
to be able to check jest.fn().mock.calls
(#13960)[@jest/test-result]
Allow TestResultsProcessor
type to return a Promise (#13950)[jest-snapshot]
Remove dependency on jest-haste-map
(#13977)Readme
Babel plugin to hoist jest.disableAutomock
, jest.enableAutomock
, jest.unmock
, jest.mock
, calls above import
statements. This plugin is automatically included when using babel-jest.
$ yarn add --dev babel-plugin-jest-hoist
babel.config.js
(Recommended)module.exports = {
plugins: ['jest-hoist'],
};
$ babel --plugins jest-hoist script.js
require('@babel/core').transform('code', {
plugins: ['jest-hoist'],
});
FAQs
Babel plugin to hoist `jest.disableAutomock`, `jest.enableAutomock`, `jest.unmock`, `jest.mock`, calls above `import` statements. This plugin is automatically included when using [babel-jest](https://github.com/jestjs/jest/tree/main/packages/babel-jest).
The npm package babel-plugin-jest-hoist receives a total of 19,263,524 weekly downloads. As such, babel-plugin-jest-hoist popularity was classified as popular.
We found that babel-plugin-jest-hoist demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 6 open source maintainers collaborating on the project.
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