Head-to-Head: Polly.JS vs Mirage Analysis

@pollyjs/core

v6.0.6(8 months ago)

This package is actively maintained.Types definitions are bundled with the npm packageNumber of direct dependencies: 9Monthly npm downloads

@pollyjs/core is a powerful and flexible JavaScript library for recording, replaying, and stubbing HTTP requests. It allows you to create and manage HTTP interactions in your tests or development environment, enabling you to simulate different network conditions and responses. With @pollyjs/core, you can easily write tests that are resilient to changes in external APIs and ensure consistent behavior.

Alternatives:
nock+
axios-mock-adapter+
miragejs+
msw+
fetch-mock+
pretender+
sinon+
intercept-stdout+
jest-mock+
supertest+

Tags: javascripttestinghttpmockingstubbing

miragejs

v0.1.48(4 months ago)

This package is actively maintained.Types definitions are bundled with the npm packageNumber of direct dependencies: 4Monthly npm downloads

MirageJS is a powerful API mocking library for front-end developers. It allows you to easily create a mock server and define routes, endpoints, and responses to simulate API behavior. With MirageJS, you can develop and test your front-end application without relying on a real backend server.

Alternatives:
json-server+
faker+
msw+
nock+
pretender+
intercept-stdout+
dyson+
json-graphql-server+
stubby+
express+

Tags: javascriptapimockingtestingfrontend

Fight!

Popularity

Both @pollyjs/core and MirageJS are popular npm packages in the JavaScript community. However, MirageJS has gained more popularity in recent years due to its powerful features and ease of use.

Functionality

@pollyjs/core is a versatile and powerful library for recording, replaying, and stubbing HTTP requests. It provides advanced features like request/response interception, dynamic responses, and request filtering. MirageJS, on the other hand, is a full-featured API mocking library that allows you to create a mock server with routes, models, and relationships. It also supports database seeding and complex data scenarios.

Integration

Both libraries can be integrated into different JavaScript frameworks and libraries. However, @pollyjs/core is more framework-agnostic and can be used with any JavaScript framework or testing tool. MirageJS, on the other hand, is specifically designed for integration with front-end frameworks like React, Ember, and Angular.

Developer Experience

Both libraries provide a good developer experience. @pollyjs/core has a simple and intuitive API, and its documentation is comprehensive and well-maintained. MirageJS also has a user-friendly API and provides excellent documentation with examples and guides to help developers get started quickly.

Community Support

Both @pollyjs/core and MirageJS have active and supportive communities. They have regular updates, bug fixes, and new features being added. However, MirageJS has a larger community and more contributors, which means it has a wider range of community-supported plugins and extensions.

Scalability

Both libraries are scalable and can handle complex scenarios. However, MirageJS is specifically designed for building complex mock servers with relationships and database seeding, making it a better choice for larger and more sophisticated projects.