/**
 * Safely parses a number from an environment variable.
 * Returns the parsed number if valid, otherwise returns the fallback value.
 *
 * @param key - The name of the environment variable
 * @param fallback - The default number to use if the env var is not set or is not a valid number
 * @returns A valid number from the environment variable or the fallback
 *
 * @example
 * ```typescript
 * // Read PORT from environment, default to 3000
 * const port = getSafeNumberFromEnv("PORT", 3000);
 *
 * // Read MAX_CONNECTIONS from environment, default to 100
 * const maxConnections = getSafeNumberFromEnv("MAX_CONNECTIONS", 100);
 * ```
 *
 * @public
 */
export declare function getSafeNumberFromEnv(key: string, fallback: number): number;
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