export declare function check(b: boolean, message?: string): void;
declare type Constructor<T> = new (...args: any[]) => T;
export declare function filterInstances<T, U>(list: T[], t: Constructor<U>): U[];
export declare function unique<T>(list: T[]): T[];
export declare function stringLiteralWithQuotes(value: string, indent?: string): string;
export {};