SharePoint Framework support for building and extending client-side applications.
Provides access to the client-side application that is currently executing.
The component context for BaseApplicationCustomizer .
This is the base class that third parties should extend when implementing a client-side extension that runs when an application is first starting.
In the component manifest, the "extensionType" should be set to "ApplicationCustomizer".
Represents custom content that is rendered inside a placeholder on a SharePoint page.
Allows third party components to discover and use SharePoint placeholders. Placeholders enable third party components to inject custom content into designated regions on the page.
Options for the PlaceholderProvider.tryCreateContent method.
The identifier for a content placeholder, which is a region on the page where third party extensibility components can inject custom content.