/**
 * Options for capturing environment variables from a setup command
 */
export interface EnvCaptureOptions {
    /** The command to wrap with env capture */
    command: string;
}
/**
 * Result of environment capture
 */
export interface EnvCaptureResult {
    /** The modified command that includes env capture */
    command: string;
    /** Path to the temporary file where env will be captured */
    envFilePath: string;
    /**
     * Function to get the captured environment variables.
     * This will read, parse, and cleanup the env file in one call.
     * Returns undefined if the env file couldn't be read.
     */
    getCapturedEnv: () => Promise<Record<string, string> | undefined>;
}
/**
 * Wraps a command with environment variable capture at the end.
 * The environment is captured to a temporary file that can be parsed later.
 *
 * @param options - Configuration for env capture
 * @returns The modified command and a function to retrieve the captured env
 *
 * @example
 * ```typescript
 * const { command, getCapturedEnv } = wrapCommandWithEnvCapture({
 *   command: 'npm install',
 * });
 *
 * // Execute command...
 * // Later, get the captured environment (reads, parses, and cleans up automatically):
 * const env = await getCapturedEnv();
 * ```
 */
export declare function wrapCommandWithEnvCapture(options: EnvCaptureOptions): EnvCaptureResult;
/**
 * Parses an environment file into a key-value object.
 * Handles multi-line values and empty lines.
 *
 * @param filePath - Path to the environment file
 * @returns A promise that resolves to the parsed environment variables
 *
 * @example
 * ```typescript
 * const env = await parseEnvFile('/tmp/env.txt');
 * console.log(env.PATH); // "/usr/bin:/bin"
 * ```
 */
export declare function parseEnvFile(filePath: string): Promise<Record<string, string>>;
/**
 * Parses environment variable content into a key-value object.
 * This is the core parsing logic extracted for easier testing.
 *
 * Environment format is: KEY=VALUE
 * Each line represents one variable.
 *
 * @param content - The raw content from an env file
 * @returns The parsed environment variables
 *
 * @example
 * ```typescript
 * const env = parseEnvContent('PATH=/usr/bin\nHOME=/home/user');
 * // { PATH: '/usr/bin', HOME: '/home/user' }
 * ```
 */
export declare function parseEnvContent(content: string): Record<string, string>;
/**
 * Cleans up the environment capture file.
 * Call this after parsing to remove temporary files.
 *
 * @param filePath - Path to the environment file to clean up
 *
 * @example
 * ```typescript
 * try {
 *   const env = await parseEnvFile(envFilePath);
 *   // Use env...
 * } finally {
 *   await cleanupEnvFile(envFilePath);
 * }
 * ```
 */
export declare function cleanupEnvFile(filePath: string): Promise<void>;