assertion-error provides a standard JavaScript Error object for assertions primarily used in testing. It offers detailed error messages, including the expected and actual values when an assertion fails. This package facilitates debugging by providing clear and informative output, indicating exactly what went wrong during testing. It's dependency-free and widely compatible, enhancing the diagnostic capabilities of various testing frameworks and environments.
The assertion-error npm package has infrequent releases. Initial releases occurred in 2013, with occasional updates in 2015, 2016, 2018, 2021 and 2023. There have been no releases in the months January-July of 2025. The releases are sporadic, with long periods of inactivity between updates.
Assertion-error downloads surged dramatically from February 2024 to July 2025, reaching over 100 million monthly downloads. A significant jump occurred between 2024 and 2025. August 2025 downloads are significantly lower, but incomplete data influences this number.
