import type { PluginCapability } from '../sdk/types';
export interface RegistryEntry {
    pluginId: string;
    id?: string;
    [key: string]: unknown;
}
export declare class PluginRegistry {
    private entries;
    private listeners;
    private version;
    /**
     * Copy-on-write: a mutation replaces the array rather than pushing into it.
     * Consumers read through `useSyncExternalStore`, which bails out when the snapshot
     * is `Object.is`-equal, so an in-place push would notify and then be discarded.
     * Copying also leaves untouched extension points at their old identity, so
     * registering a map tool does not re-render the BIM toolbar.
     */
    register(extensionPoint: PluginCapability | string, entry: RegistryEntry): void;
    getAll<T extends RegistryEntry = RegistryEntry>(extensionPoint: string): T[];
    deregisterAll(pluginId: string): void;
    clear(): void;
    /** Subscribe to contribution changes. Returns the unsubscribe function. */
    subscribe(listener: () => void): () => void;
    /** Monotonic counter, bumped on every actual change. Useful in tests and debug UI. */
    getVersion(): number;
    private bump;
}
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