/**
 * Check if browser supports Array.isArray
 */
export declare const isLegacyEnvironment: () => boolean;
/**
 * For browsers & Node versions
 * that do not support Array.isArray
 */
export declare const legacyIsArray: (input: unknown) => input is unknown[];
declare const _default: {
    isLegacyEnvironment: () => boolean;
    legacyIsArray: (input: unknown) => input is unknown[];
};
export default _default;