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The component.js file is the component controller and provides the runtime metadata and the component methods.

A component can depend on the entire SAPUI5 library. If you only require particular controls, you can also start with the corresponding require statements directly. The following code snippet is an example for a declaration statement: ("");

To create a UI component, you extend the UI component's base class and pass to it the name of the new component and its package path as shown in the following code snippet:

// Shell Component
sap.ui.core.UIComponent.extent("", {

The metadata provide the information to ensure the completeness of the elements of which the component consists of. This facilitates the decoupling of the application logic as much as possible from the logic within a particular component.