/**
 * Result of comparing two .env files.
 */
export type DiffResult = {
    /** Keys present in the example file but missing from the current file */
    missing: string[];
    /** Keys present in the current file but not defined in the example file */
    extra: string[];
    /** Keys that exist in both files but have mismatched values */
    valueMismatches: {
        /** The environment variable key */
        key: string;
        /** Expected value from the example file */
        expected: string;
        /** Actual value from the current file */
        actual: string;
    }[];
};
/**
 * Compares two .env files and returns their differences.
 *
 * @param current - An object representing the current `.env` file (key-value pairs).
 * @param example - An object representing the `.env.example` file (key-value pairs).
 * @param checkValues - If true, compare values when the example has a non-empty value.
 * @returns A `DiffResult` object containing missing, extra, and mismatched keys.
 */
export declare function diffEnv(current: Record<string, string>, example: Record<string, string>, checkValues?: boolean): DiffResult;
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