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

@pollyjs/core

v6.0.6(11 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 interactions in tests. It allows developers to create reliable and deterministic tests by capturing and replaying network requests and responses. With support for various adapters and plugins, Polly.js can be easily integrated into different testing frameworks and environments.

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

Tags: javascripttestinghttpmockingnetwork

miragejs

v0.2.0-alpha.0(3 days ago)

This package is actively maintained.The package doesn't have any types definitionsNumber of direct dependencies: 4Monthly npm downloads

MirageJS is a client-side server mocking library for frontend developers, allowing them to build, test, and prototype applications without relying on a real backend. It provides a simple and intuitive API for creating mock server endpoints, handling data fixtures, and simulating various server responses like CRUD operations, authentication, and pagination. MirageJS seamlessly integrates with popular frontend frameworks like React, Vue, and Angular, making it easy to set up a mock server environment for development and testing purposes.

Alternatives:
json-server+
faker+
msw+
nock+
axios-mock-adapter+
pretender+
casual+
dyson+
interfake+
stubby+

Tags: javascriptfrontendmockingservertesting

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.