import { Extension } from '#types/extension-types.js';
/**
 * Used to collect various statistics.
 */
export declare class Counter {
    #private;
    increaseExtensionsInitId(): number;
    getExtensionsInitId(): number;
    resetInitedExtensionsSet(): void;
    addInitedExtensions(extension: Extension): void;
    getInitedExtensions(): Set<Extension<any>>;
}
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