import type { SecretMapping } from './types.js';
/**
 * Update a specific key's value in an env file
 * Uses atomic write (temp file + rename) to prevent corruption
 *
 * @param filePath - Path to the env file
 * @param envVar - Environment variable name to update
 * @param newValue - New value for the environment variable
 * @returns true if the file was updated, false if the key was added
 */
export declare function updateEnvFile(filePath: string, envVar: string, newValue: string): {
    updated: boolean;
    added: boolean;
};
/**
 * Update multiple keys in an env file atomically
 *
 * @param filePath - Path to the env file
 * @param updates - Map of envVar -> newValue
 * @returns Summary of updates
 */
export declare function updateEnvFileMultiple(filePath: string, updates: Record<string, string>): {
    updated: number;
    added: number;
};
/**
 * Find which env var(s) in a file map to a specific API key name
 * This is used when handling rotation events to know which env vars to update
 *
 * @param mappings - The secret mappings from exec config
 * @param apiKeyName - The managed API key name from the rotation event
 * @returns Array of env var names that use this API key
 */
export declare function findEnvVarsForApiKey(mappings: (SecretMapping & {
    literal?: string;
})[], apiKeyName: string): string[];
//# sourceMappingURL=env-file.d.ts.map