import type ExtensionEntry from "../plugin_repository/ExtensionEntry.ts";
/**
 * A registry of Extensions.
 */
export default interface ExtensionRegistry {
    /**
     * Register a specified {@link ExtensionEntry} with a specified Extension handle.
     *
     * @param extensionHandle a unique identifier under which to register the {@link ExtensionEntry}
     * @param extensionEntry the {@link ExtensionEntry} for the Extension to register
     */
    register(extensionHandle: string, extensionEntry: ExtensionEntry): Promise<void>;
    /**
     * Return the specified registered {@link ExtensionEntry} instance.
     *
     * @param extensionHandle the handle for the desired {@link ExtensionEntry} instance
     *
     * @return an {@link ExtensionEntry} instance
     */
    get(extensionHandle: string): Promise<Readonly<ExtensionEntry>>;
    /**
     * Return {@link ExtensionEntry} instances for registered Extensions implementing the specified Extension Point.
     *
     * @param extensionPoint the Extension Point to match
     *
     * @return a map of extension handle to {@link ExtensionEntry} for all matching
     * registered {@link ExtensionEntry} instances
     */
    getExtensions(extensionPoint: string): Promise<ReadonlyMap<string, ExtensionEntry>>;
}
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