import type { Observable } from '@atlassian/clientside-extensions-base';
import type { InitialAttributes, LocationsSubjectPayload, ExtensionAttributesProvider, ExtensionHandler } from './types';
/**
 * Registry of Client-side Extensions and Client Locations
 */
export default class ClientExtensionsRegistry {
    private isAtlassianDevModeEnabled;
    /**
     * Map of locations and their subjects.
     */
    private locations;
    /**
     * Map of registered extensions.
     */
    private extensions;
    /**
     * Internal cache to check which locations have received an initialization call
     */
    private initializedLocations;
    /**
     * Map of registered handlers.
     */
    private handlers;
    /**
     * Get a Location observable. The observer will be notified when new descriptors are available to render.
     */
    getLocation(locationName: string): Observable<LocationsSubjectPayload>;
    /**
     * Extension entry-points use this API to register their attribute providers.
     */
    registerExtension(key: string, attributesProvider: ExtensionAttributesProvider, initialDescriptor?: InitialAttributes): void;
    /**
     * Toggles the {@link ClientExtensionsRegistry#isAtlassianDevModeEnabled} flag.
     * Check the {@link getLocationResources} function for more details about the dev mode.
     *
     * @since 2.1.0
     * @param isEnabled
     */
    toggleDevMode(isEnabled: boolean): void;
    /**
     * Registers a handler for web-fragments that can be referenced via the custom-elements provided since 2.1.0
     * see {@link registerCustomElement}
     *
     * @since 2.1.0
     */
    registerHandler(identifier: string, handler: ExtensionHandler): void;
    /**
     * Retrieve a registered web-fragment handler {@link registerCustomElement}
     * @since 2.1.0
     */
    getHandler(identifier: string): ExtensionHandler | null;
    private createOrGetExtension;
    private getExtensionsByLocation;
    private getExtensionByKey;
    private updateExtensionByKey;
    private ensureLocationsSubject;
    private hasSubjectForLocation;
    private addExtension;
    private static sortByWeight;
    private initializeExtensionLocation;
}
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