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@jest/types
Advanced tools
The @jest/types package provides TypeScript definitions and utility types for Jest, a popular JavaScript testing framework. It includes types for Jest configuration, global variables, and other utilities that help in creating type-safe test environments and extending Jest functionalities.
Config
Defines types for Jest configuration options. This allows for type-safe Jest configuration files, ensuring that any configuration options passed to Jest are valid.
{"globals": {"myGlobal": "value"}, "testMatch": ["**/__tests__/**/*.js?(x)", "**/?(*.)+(spec|test).js?(x)"]}
Global
Provides types for Jest's global variables and functions, such as 'describe', 'it', and 'expect'. This is useful for creating custom global setups or mocks in a type-safe manner.
"declare var jest: jest.Jest"
Mock
Includes types for Jest's mocking utilities, enabling developers to create and manipulate mocks with full TypeScript support.
"const mockedFunction: jest.Mock = jest.fn()"
Before Jest provided its own TypeScript definitions, @types/jest was the go-to package for Jest types. It serves a similar purpose by providing type definitions for Jest, but @jest/types is more up-to-date and maintained by the Jest team.
While ts-jest is primarily a TypeScript preprocessor for Jest, allowing Jest to understand TypeScript files, it also includes some utility types for configuration. However, @jest/types focuses solely on providing comprehensive type definitions for Jest's API.
jest-mock-extended provides extended types and utilities for mocking in Jest, particularly with TypeScript. It complements @jest/types by offering more detailed mock creation and manipulation capabilities, though @jest/types provides the foundational type definitions.
26.0.0
[jest-environment-jsdom]
[BREAKING] Upgrade jsdom
to v16 (#9606)[@jest/fake-timers]
Add possibility to use a modern implementation of fake timers, backed by @sinonjs/fake-timers
(#7776)[jest-runtime]
Add createMockFromModule
as an alias for genMockFromModule
(#9962)[babel-jest]
Handle null
being passed to createTransformer
(#9955)[jest-circus, jest-console, jest-jasmine2, jest-reporters, jest-util, pretty-format]
Fix time durating formatting and consolidate time formatting code (#9765)[jest-circus]
[BREAKING] Fail tests if a test takes a done callback and have return values (#9129)[jest-circus]
[BREAKING] Throw a proper error if a test / hook is defined asynchronously (#8096)[jest-circus]
Throw more descriptive error if hook is defined inside test (#9957)[jest-circus]
[BREAKING] Align execution order of tests to match jasmine
's top to bottom order (#9965)[jest-config, jest-resolve]
[BREAKING] Remove support for browser
field (#9943)[jest-haste-map]
Stop reporting files as changed when they are only accessed (#7347)[jest-resolve]
Show relative path from root dir for module not found
errors (#9963)[jest-runtime]
Fix absolute path moduleNameMapper + jest.mock bug (#8727)[*]
[BREAKING] TypeScript definitions requires a minimum of TypeScript v3.8 (#9823)[*]
[BREAKING] Drop support for Node 8 (#9423)[*]
Upgrade to chalk@4 (#9752)[*]
Remove usage of realpath-native
(#9952)[docs]
Fix example reference implementation to use Jest with Phabricator (#8662)[docs]
Added default compiler to transform (#8583)[docs]
Updated Testing Frameworks guide with React; make it generic (#9106)[expect, jest-mock, pretty-format]
[BREAKING] Remove build-es5
from package (#9945)[@jest/fake-timers, @jest/environment]
[BREAKING] Rename LolexFakeTimers
to ModernFakeTimers
(#9960)[jest-haste-map]
[BREAKING] removed providesModuleNodeModules
(#8535)[jest-runtime]
[BREAKING] Remove long-deprecated require.requireActual
and require.requireMock
methods (#9854)FAQs
This package contains shared types of Jest's packages.
The npm package @jest/types receives a total of 54,947,644 weekly downloads. As such, @jest/types popularity was classified as popular.
We found that @jest/types demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 6 open source maintainers collaborating on the project.
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