# Jasmine Core 5.6.0 Release Notes

## Changes

* Added [toHaveNoOtherSpyInteractions](https://jasmine.github.io/api/5.6/matchers.html#toHaveNoOtherSpyInteractions) matcher
  * Merges [#2051](https://github.com/jasmine/jasmine/pull/2051) from @Eradev
  * Fixes [#1991](https://github.com/jasmine/jasmine/issues/1991)

* Added [toBeNullish](https://jasmine.github.io/api/5.6/matchers.html#toBeNullish) matcher
  * Merges [#2045](https://github.com/jasmine/jasmine/pull/2045) from @MattMcCherry

* Improved error messages when non-promises are passed to built-in async matchers
  * Merges [#2049](https://github.com/jasmine/jasmine/pull/2049) from @andiz2
  * Fixes [#2037](https://github.com/jasmine/jasmine/issues/2037)

* Added [toHaveClasses](https://jasmine.github.io/api/5.6/matchers.html#toHaveClasses) matcher
  * Merges [#2046](https://github.com/jasmine/jasmine/pull/2046) from @aYorky 

## Documentation updates

* Demoted Safari to best-effort support
  
  Due to limited availability of Safari versions for contributors and maintainers
  as well as in CI, Safari will be supported on the same best-effort basis as
  environments that are past end of life, such as previous Firefox ESR versions. 
  See [this discussion](https://github.com/jasmine/jasmine/discussions/2050) for
  more information about why this change was made and what to expect.


## Supported environments

This version has been tested in the following environments.

| Environment       | Supported versions      |
|-------------------|-------------------------|
| Node              | 18, 20, 22              |
| Safari            | 15**, 16**, 17**        |
| Chrome            | 133*                    |
| Firefox           | 102**, 115**, 128, 135* |
| Edge              | 132*                    |

\* Evergreen browser. Each version of Jasmine is tested against the latest
version available at release time.<br>
\** Supported on a best-effort basis. Support for these versions may be dropped
if it becomes impractical, and bugs affecting only these versions may not be
treated as release blockers.


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_Release Notes generated with _[Anchorman](http://github.com/infews/anchorman)_