export type LogLevel = "debug" | "info" | "warn" | "error";
export interface SpecShieldConfig {
    apiUrl: string;
    apiKey: string;
    timeoutMs: number;
    logLevel: LogLevel;
}
/**
 * Loads configuration from environment variables. SPECSHIELD_API_KEY is required;
 * everything else has a sensible default. Throws {@link ConfigError} (never
 * echoing the key) when the key is missing.
 */
export declare function loadConfig(env?: NodeJS.ProcessEnv): SpecShieldConfig;