@jest/types
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Package description
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.
Changelog
26.6.2
[jest-core] Add findRelatedTests and nonFlagArgs in allowed config options for updateConfigAndRun in watch plugins (#10659)[babel-plugin-jest-hoist] Preserve order of hoisted mock nodes within containing block (#10536)[babel-plugin-jest-hoist] Hoist pure constants to support experimental JSX transform in hoisted mocks (#10723)[babel-preset-jest] Update babel-preset-current-node-syntax to support top level await (#10747)[expect] Revert "Fix objectContaining to work recursively into sub-objects (#10508)" (#10766)[jest-circus, jest-jasmine2] fix: don't assume stack is always a string (#10697)[jest-config] Fix bug introduced in watch mode by PR #10678 (#10692)[jest-config] Throw correct error for missing preset modules (#10737)[jest-resolve-dependencies] Resolve mocks as dependencies (#10713)[jest-runtime] Handle file URLs in dynamic imports (#10744)[jest-runtime, babel-jest] Pass more ESM options to @jest/transform (#10752)[jest-runtime] Properly inject extraGlobals into the runtime (#10758)[jest-transform] Link to ESM docs on syntax errors (#10748)[docs] Add docs for using mocks in TypeScript (#10415)[eslint-config-fb-strict] Move package from this repo to fbjs repo (#10739)[examples] Update TypeScript example to show use of newer Jest types (#10399)[jest-cli] chore: standardize files and folder names (#10698)[jest-config] Switch ts-node Register type to Service due to deprecation (#11210)FAQs
This package contains shared types of Jest's packages.
The npm package @jest/types receives a total of 56,732,200 weekly downloads. As such, @jest/types popularity was classified as popular.
We found that @jest/types 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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