Jest-fetch-mock is a valuable tool for developers utilizing Jest for testing JavaScript code that relies on the fetch API. Versions 1.4.0 and 1.3.3 offer similar core functionalities, primarily mocking the fetch function to simulate network requests during testing, making tests predictable and isolated. Crucially, both versions depend on isomorphic-fetch, ensuring compatibility across various JavaScript environments, particularly Node.js and browsers.
However, the key difference lies in their release dates. Version 1.4.0 was released on December 11, 2017, while version 1.3.3 was released on November 1, 2017. This time difference suggests that version 1.4.0 likely includes bug fixes, performance improvements, or minor feature enhancements not present in the earlier 1.3.3 version. While the changelog specifics aren't provided, upgrading to the newer 1.4.0 is generally recommended to leverage these improvements and ensure the most stable and up-to-date mocking experience.
For developers, these versions provide a simple way to stub network requests, enabling precise control over the data returned by mocked fetch calls. This is invaluable for testing different scenarios, such as successful responses, error conditions, and various data formats, without actually making network connections. Therefore, choosing the newer version allows developers to benefit from recent improvements and bug fixes.
All the vulnerabilities related to the version 1.4.0 of the package
node-fetch forwards secure headers to untrusted sites
node-fetch forwards secure headers such as authorization, www-authenticate, cookie, & cookie2 when redirecting to a untrusted site.
