/**
 * CSS injection utility
 * Injects the component's CSS into the document head once.
 * This is to avoid issues with multiple React roots or SSR
 * and doesn't require the user of the library to manage CSS imports.
 */
export declare function injectStyles(cssString: string): void;
/**
 * Check if styles have been injected
 */
export declare function stylesInjected(): boolean;