[ [**WEBSITE**](https://prosemirror.net) | [**ISSUES**](https://github.com/prosemirror/prosemirror/issues) | [**FORUM**](https://discuss.prosemirror.net) | [**GITTER**](https://gitter.im/ProseMirror/prosemirror) | [**CHANGELOG**](https://github.com/ProseMirror/prosemirror-transform/blob/master/CHANGELOG.md) ]
This is a [core module](https://prosemirror.net/docs/ref/#transform) of [ProseMirror](https://prosemirror.net).
ProseMirror is a well-behaved rich semantic content editor based on
contentEditable, with support for collaborative editing and custom
This [module](https://prosemirror.net/docs/ref/#transform) implements
which are used by the editor to treat changes as first-class values,
which can be saved, shared, and reasoned about.
The [project page](https://prosemirror.net) has more information, a
number of [examples](https://prosemirror.net/examples/) and the
This code is released under an
There's a [forum](http://discuss.prosemirror.net) for general
discussion and support requests, and the
[Github bug tracker](https://github.com/prosemirror/prosemirror/issues)
is the place to report issues.
We aim to be an inclusive, welcoming community. To make that explicit,
we have a [code of
conduct](http://contributor-covenant.org/version/1/1/0/) that applies
to communication around the project.