/**
 * Type check for falsy values.
 *
 * Used as the callback for array.filter, e.g.
 * items.filter(falsy)
 */
export declare function falsy<T>(value: T): value is NonNullable<T>;
export declare function onlyUnique(value: string, index: number, self: Array<string>): boolean;
export declare function getFieldKey(uuid: string, fieldName: string): string;