new StatefulComponent()
Properties:
| Name | Type | Description |
|---|---|---|
state |
Object | |
reducers |
Array.<function()> | |
actions |
Array.<Object> | |
previousStates |
Array.<Object> | |
snapshots |
Array.<Snapshot> |
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Methods
addReducer(fn)
Adds a reducer which will be called whenever an action is dispatched
Parameters:
| Name | Type | Description |
|---|---|---|
fn |
function |
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doAction(action, callbackopt, …callbackArgsopt)
Applies an action to the state, via the currently registered reducers.
If a reducer throws an error, it is caught and sent to onError
Once all reducers have been called, the action is pushed onto actions (to allow inspecting previous actions).
After everything, the callback is called, if provided
Parameters:
| Name | Type | Attributes | Description |
|---|---|---|---|
action |
Object | ||
callback |
function |
<optional> |
|
callbackArgs |
any |
<optional> <repeatable> |
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getPreviousState() → {Object|null}
Returns the update previous to the current one. If there was no previous state (e.g. there were no updates yet), returns null.
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Returns:
- Type
- Object | null
onError(err)
Handles an error that came from a reducer. Default behavior is to throw the error, however
this can be overridden to allow other error handling.
Parameters:
| Name | Type | Description |
|---|---|---|
err |
Error |
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setState(newState, callbackopt)
Merges newState into state, then calls callback if provided.
Parameters:
| Name | Type | Attributes | Description |
|---|---|---|---|
newState |
Object | ||
callback |
function |
<optional> |
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