app Module
The App Framework provides simple MVC-like building blocks (models, model lists, views, and URL-based routing) for writing single-page JavaScript applications.
This module provides the following classes:
This module is a rollup of the following modules:
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                        app-base
                    
                    Provides a top-level application component which manages navigation and views.
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                        app-transitions
                    
                    Provides view transitions forY.Appin browsers which support native CSS3 transitions.
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                        app-transitions-native
                    
                    Provides the implementation of view transitions forY.App.Transitionsin browsers which support native CSS3 transitions.
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                        model
                    
                    Attribute-based data model with APIs for getting, setting, validating, and syncing attribute values, as well as events for being notified of model changes.
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                        model-list
                    
                    Provides an API for managing an ordered list of Model instances.
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                        router
                    
                    Provides URL-based routing using HTML5pushState()or the location hash.
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                        view
                    
                    Represents a logical piece of an application's user interface, and provides a lightweight, overridable API for rendering content and handling delegated DOM events on a container element.
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                        view-node-map
                    
                    View extension that adds a staticgetByNode()method that returns the nearest View instance associated with the given Node (similar to Widget'sgetByNode()method).
