Chai-string releases were most frequent in 2014 and 2015, with occasional releases in 2016, 2017, and 2018. After that, there were no releases until February and March 2025, with versions 2.0.0 and 1.6.0 respectively. Overall, the package's release frequency has been very sporadic, with long periods of inactivity.
chai-string extends the Chai assertion library with useful string-specific assertions. It simplifies testing string content and formatting. Common assertions include checking if a string contains another substring, starts or ends with a specific string, is a valid UUID, JSON, or even matches a regular expression. It's lightweight and adds clarity to your test suites when dealing with strings, enabling more expressive and readable assertions compared to vanilla Chai.
Chai-string downloads show a generally increasing trend from March 2024 to August 2025, peaking in July 2025 at over 2.5 million. September 2025 data is incomplete and significantly lower, but the prior months indicate strong and growing usage of the package.
