/**
 * Determines if the application is running in development mode
 *
 * Uses a combination of checks to ensure consistent behavior:
 * 1. Checks if app is packaged (production builds are packaged)
 * 2. Checks NODE_ENV environment variable
 * 3. Checks ELECTRON_IS_DEV environment variable (set by electron-is-dev or similar utilities)
 *
 * @returns {boolean} True if running in development mode, false otherwise
 */
export declare const isDev: () => Promise<boolean>;