Added
- [2276](https://github.com/plotly/dash/pull/2276) Added component prop static typing for Python.
- [3152](https://github.com/plotly/dash/pull/3152) Custom Python prop typing for component library.
- Added `-t`, `--custom-typing-module` argument to `dash-generate-components` CLI, default to `dash_prop_typing` and can contains definitions in variables:
- `custom_imports: dict[ComponentName, list[str]]` import statement to be copied at the top of the component class definition.
- `custom_props: dict[ComponentName, dict[PropName, function]]` for custom props. The function signature is: `def generate_type(type_info, component_name, prop_name) -> str`
- [3035](https://github.com/plotly/dash/pull/3035) `PropType` generation for Typescript components allowing runtime prop validation when in debug mode.
- [3121](https://github.com/plotly/dash/pull/3121) Restyle and add version checker to dev tools.
- [3029](https://github.com/plotly/dash/pull/3029) Add pip install based hooks to Dash functionalities.
- Packages can add an `entry_points` with key `dash-hooks` to their `setup.py` for a module to be run when a Dash app is started.
- Add `dash.hooks` methods to hook into Dash apps.
- `hooks.layout` takes the layout as argument and must return a layout, can be used to wrap or add to the layout of Dash apps.
- `hooks.callback` defines a callback to be added to Dash apps.
- `hooks.clientside_callback` defines a clientside callback to be added to Dash apps.
- `hooks.setup` is called before a Dash app is started to get an instance of the app as first argument.
- `hooks.error` to receive all callback errors.
- `hooks.index` to change the `Dash.index_string`.
- `hooks.route` to add a Flask route to the Dash app.
- [3175](https://github.com/plotly/dash/pull/3175) `hooks.custom_data` to add custom data called from the callback route to the user callback.
- [3066](https://github.com/plotly/dash/pull/3066) Adds `window.dash_component_api` for components developer as alternative to removed `_dashprivate` props.
- Add `dash_component_api.useDashContext`, `dash_component_api.DashContext` to access the redux store and loading mechanisms.
- `DashContext.componentPath` hold the path to the current component.
- `DashContext.useLoading(options?)` selector to get a boolean if the component is loading.
- `DashContext.isLoading` in case you need to use outside of a functional component.
- `DashContext.useSelector` to create custom selectors for the connected redux store.
- `DashContext.useStore` get the Dash app redux store.
- `DashContext.useDispatch` to dispatch new actions on the Dash redux store.
- Add `dash_component_api.getLayout(path)` to replace `_dashprivate_layout`.
- Expose `stringifyId` in `window.dash_component_api`. [3175](https://github.com/plotly/dash/pull/3175)
- Add `window.dash_component_api.ExternalWrapper` to render Dash components that are not part of the layout tree. [3170](https://github.com/plotly/dash/pull/3170) [#3183](https://github.com/plotly/dash/pull/3183)
Removed
- [3066](https://github.com/plotly/dash/pull/3066) `loading_state` removed from components props.
- [3078](https://github.com/plotly/dash/pull/3078) Deprecations removals
- Removed `dash.development.component_loader`, components libraries now required to generate the components with `dash-generate-components`.
- `Dash.run_server` has been removed in favor of `Dash.run`.
- Removed `dcc.LogoutButton` component.
- Renamed all `long` references to `background`.
- Removed `dash_core_components`, `dash_html_components` and `dash_table` stub packages from `dash` install requirements.
Changed
- [3093](https://github.com/plotly/dash/pull/3093) Changed default React version to 18.3.1
- `defaultProps` on functional components now emits a deprecation warning.
- Deprecation notice on strings refs.
Fixed
- [3080](https://github.com/plotly/dash/pull/3080) Fix docstring generation for components using single-line or nonstandard-indent leading comments
- [3103](https://github.com/plotly/dash/pull/3103) Fix Graph component becomes unresponsive if an invalid figure is passed
- [3190](https://github.com/plotly/dash/pull/3190) Fix issue with cache key generation by adding option to include triggered inputs. Fixes [#3189](https://github.com/plotly/dash/issues/3189)
- [3130](https://github.com/plotly/dash/pull/3130) Fix HOST variable when using conda.
- [3066](https://github.com/plotly/dash/pull/3066) Improve performance of context components re-rendering.
- [3171](https://github.com/plotly/dash/pull/3171) JupyterDash Fix - Alive Check
- [3168](https://github.com/plotly/dash/pull/3168) Fix clientside pattern matching with a dot in the id.