esmock

provides native ESM import and globals mocking for unit tests

v2.6.9 URL: https://unpkg.com/esmock@2.6.9/src/esmock.js

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cjs-mock

NodeJS module mocking for CJS (CommonJS) modules for unit testing purposes.

v1.4.6 URL: https://unpkg.com/cjs-mock@1.4.6/dist/index.js

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unit test ts unit test typescript unit test unit-test mock mocking typescript mocking ts mock proxyquire ts proxyquire typescript proxyquire isolate dependency mock rewire

jest-codemods

Codemods for migrating test files to Jest

v0.34.0 URL: https://unpkg.com/jest-codemods@0.34.0/index.js

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codemod jest ava tape mocha chai proxyquire migrate migrations upgrade transform jscodeshift codemods

fibble

Small library to insert test doubles into your tests

v1.2.3 URL: https://unpkg.com/fibble@1.2.3/index.js

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test testdouble mock proxyquire

rewiremock

Advanced dependency mocking device.

v3.14.5 URL: https://unpkg.com/rewiremock@3.14.5/lib/index.js

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es6 require dependency injection dependency injection mock dependency di inject swap test mock mockery proxyquire