import type { GroupOption, Option } from '../type';
export declare const fillArr: (val: number, size: number) => number[];
export declare const defaultFilter: <T extends string | Option | GroupOption>(keyword: string, list?: T[]) => T[];
export declare const findSameOption: <T extends string | Option | GroupOption>(keyword: string, list: T[], checkLabel?: boolean) => T[];
export declare function offsetOutward(center: [number, number], points: [number, number][], offset: number): [number, number][];
export declare function isUrl(url: any, options?: {
    allowWithoutProtocol?: boolean;
    allowIpv6?: boolean;
}): boolean;
export declare const fixedNumber: (value: number, precision: number) => number;
export declare const getEnumerableKeys: (obj: object) => (string | symbol)[];