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10 Best Vanilla JavaScript Mocking Libraries

List hand-picked by Openbase Experts
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ng-mocks

ng-mocks

Angular testing library for mocking components, directives, pipes, services and facilitating TestBed setup

267K
833
Built-in
MIT
sinon

sinon

Test spies, stubs and mocks for JavaScript.

5.6M
9.3K
DefinitelyTyped
BSD-3-Clause
fak

faker

What really happened with Aaron Swartz?

2.5M
1.6K
DefinitelyTyped
MIT
ama

axios-mock-adapter

Axios adapter that allows to easily mock requests

963K
3.1K
Built-in
MIT
jso

jsonplaceholder

A simple online fake REST API server

36
4.5K
No support
MIT
jma

jest-mock-axios

Axios mock for Jest

147K
235
Built-in
MIT
jlm

jest-localstorage-mock

A module to mock window.localStorage and window.sessionStorage in Jest

458K
300
No support
BSD-3-Clause
testdouble

testdouble

A minimal test double library for TDD with JavaScript

66.1K
1.4K
Built-in
MIT
ms

mock-socket

Javascript mocking library for WebSockets and Socket.IO

501K
728
No support
MIT
xm

xhr-mock

Utility for mocking XMLHttpRequest.

312K
192
Built-in
MIT
mk

mock-knex

a knex mock adapter for simulating a db during testing

34.1K
DefinitelyTyped
MIT
mimic

mimic

Seamless client side mocking

5.6K
385
No support
MIT
lineman

lineman

Lineman helps you build fat-client JavaScript apps. It produces happiness by building assets, mocking servers, running specs on every file change

3.2K
1.2K
No support
MIT
kakapo

kakapo

🐦 Next generation mocking framework in Javascript

117
532
Built-in
MIT
service-mocker

service-mocker

🚀 Next generation frontend API mocking framework

87
1K
Built-in
MIT
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