List of state attributes that got changed. This name is, however, reserved for future extensions.
Please note state container only detects changes made to the top-level attributes.
And, which is important, you need to create (return in the reducer function)
a new state object (sorry, no immer.js-like magic here, at least for now).
Let's take as an example simple state of an electric vehicle:
Object ("EV")
+- "power" (object)
| +- "currentConsumption" (number)
| +- "rangeLeft" (number)
+- "wheels" (array)
+- "frontLeftPressure" (number)
+- "frontRightPressure" (number)
+- "backLeftPressure" (number)
+- "backRightPressure" (number)
If there is a state change due to invoking accelerateReducer() function,
that, in effect, modifies changes both the currentConsumption (in kWh) and rangeLeft attributes,
the attributes that got changed would be ["power"] (not ["power.currentConsumption", "power.rangeLeft"]).
Please note: [] got returned when action made no effect to the state
or the bypassReducer was true
Generated using TypeDoc
Contract for set of arguments that are passed back from state container to the callback function when action got dispatched and/or reducer executed (state changed).