import type { I18nConfig, KeyAddition, KeyRemoval, KeyRename, BatchKeyOperation, OperationResult } from '../types/index.js';
import type { FileManager } from '../core/file-manager.js';
export declare class KeyManager {
    private config;
    private fileManager;
    constructor(config: I18nConfig, fileManager: FileManager);
    /**
     * Add a new translation key to specified languages and namespaces
     */
    addKey(operation: KeyAddition): Promise<OperationResult>;
    /**
     * Remove a translation key from specified languages and namespaces
     */
    removeKey(operation: KeyRemoval): Promise<OperationResult>;
    /**
     * Rename a translation key across specified languages and namespaces
     */
    renameKey(operation: KeyRename): Promise<OperationResult>;
    /**
     * Execute multiple key operations in a batch
     */
    batchOperation(operations: BatchKeyOperation): Promise<OperationResult>;
    /**
     * Sync keys from a source namespace to target namespaces
     */
    syncKeys(sourceNamespace: string, targetNamespaces: string[], language?: string, copyValues?: boolean): Promise<OperationResult>;
    /**
     * Check for key conflicts before operations
     */
    private checkKeyConflicts;
    /**
     * Get nested value from object using dot notation
     */
    private getNestedValue;
    /**
     * Set nested value in object using dot notation
     */
    private setNestedValue;
    /**
     * Delete nested value from object using dot notation
     */
    private deleteNestedValue;
    /**
     * Remove empty parent objects after deletion
     */
    private cleanupEmptyObjects;
    /**
     * Get all keys from a nested object
     */
    private getAllKeys;
}