Customize Widgets 
Edit
Namespace: core/customize-widgets.
Selectors
isInserterOpened
Returns true if the inserter is opened.
Parameters
- state
Object: Global application state.
Returns
boolean: Whether the inserter is opened.
Actions
setIsInserterOpened
Returns an action object used to open/close the inserter.
Parameters
- value
boolean|Object: Whether the inserter should be opened (true) or closed (false). To specify an insertion point, use an object. - value.rootClientId
string: The root client ID to insert at. - value.insertionIndex
number: The index to insert at.
Returns
Object: Action object.