export declare const unique: <T>(arr: T[]) => T[]; export declare const extractFirst: <T>(arr: T | T[]) => T; type Many<T> = T | ReadonlyArray<T>; /** like `_.castArray`, except falsy value returns empty array. */ export declare const castArray: <T>(arr: Many<T>) => T[]; export { castArray as ensureArray } from 'lodash-unified';
