import type { JSX } from 'react'; import type { Severity } from '../../constants/severity.types'; export type Environment = 'production' | 'staging' | 'test'; export type EnvironmentBannerProps = { environment: Environment; customLabel?: never; customSeverity?: never; } | { environment?: never; customLabel: string; customSeverity: Severity; }; export declare function EnvironmentBanner(props: EnvironmentBannerProps): JSX.Element;