/**
 * Environment File Validator
 *
 * Utilities for parsing and validating .env files.
 */
import type { FactiiiConfig } from '../types/index.js';
interface EnvVars {
    [key: string]: string;
}
interface KeyComparison {
    match: boolean;
    missing: string[];
    extra: string[];
}
interface EmptyCheck {
    allFilled: boolean;
    empty: string[];
}
interface PlaceholderInfo {
    key: string;
    value: string;
}
interface PlaceholderCheck {
    hasPlaceholders: boolean;
    placeholders: PlaceholderInfo[];
}
interface ProdDifferences {
    changed: string[];
    onlyLocal: string[];
    onlyGitHub: string[];
}
interface GitHubSecrets {
    PROD_ENVS?: EnvVars;
}
interface AutoConfig {
    isStagingSecret?: boolean;
    allowIdenticalEnvVars?: string[];
}
interface ConfigWithAuto extends FactiiiConfig {
    auto?: AutoConfig;
}
interface EnvValidationResult {
    devExists: boolean;
    stagingExists: boolean;
    prodExists: boolean;
    prodLocal: boolean;
    prodGitHub: boolean;
    prodGitignored: boolean;
    stagingGitignored: boolean;
    keysMatch: boolean;
    allFilled: boolean;
    warnings: string[];
    errors: string[];
    dev: EnvVars | null;
    staging: EnvVars | null;
    prod: EnvVars | null;
    prodGitHubData?: EnvVars;
    prodDifferences?: ProdDifferences;
}
/**
 * Parse .env file into key-value object
 * @param filepath - Path to .env file
 * @returns Parsed key-value pairs or null if file doesn't exist
 */
export declare function parseEnvFile(filepath: string): EnvVars | null;
/**
 * Check if value looks like a placeholder
 * @param value - Environment variable value
 */
export declare function looksLikePlaceholder(value: string): boolean;
/**
 * Check if file is in .gitignore
 * @param rootDir - Root directory
 * @param filename - Filename to check
 */
export declare function isGitignored(rootDir: string, filename: string): boolean;
/**
 * Compare keys between two env objects
 * @param expected - Expected keys (from .env.example)
 * @param actual - Actual keys to validate
 */
export declare function compareEnvKeys(expected: EnvVars, actual: EnvVars): KeyComparison;
/**
 * Check if env values are filled (not empty)
 * @param env - Environment variables
 */
export declare function checkValuesNotEmpty(env: EnvVars): EmptyCheck;
/**
 * Check for placeholder values
 * @param env - Environment variables
 */
export declare function checkForPlaceholders(env: EnvVars): PlaceholderCheck;
/**
 * Compare values between environments
 * @param env1 - First environment
 * @param env2 - Second environment
 * @returns Keys with matching values
 */
export declare function findMatchingValues(env1: EnvVars, env2: EnvVars): string[];
/**
 * Validate environment file setup
 * @param rootDir - Root directory
 * @param config - Parsed stack.yml config
 * @param githubSecrets - Optional GitHub secrets for comparison
 */
export declare function validateEnvFiles(rootDir: string, config?: ConfigWithAuto, githubSecrets?: GitHubSecrets | null): EnvValidationResult;
export {};
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