declare class StyleSheetManager {
    private styles;
    private isServer;
    private styleSheet;
    constructor();
    /**
     * Add a style to the manager
     * @param rule - The style rule to add
     */
    addStyle(rule: string): void;
    /**
     * Remove a style from the manager
     * @param rule - The style rule to remove
     */
    removeStyle(rule: string): void;
    /**
     * Clear styles from the manager
     */
    clearStyles(): void;
    /**
     * Get styles as a string
     * @returns The styles as a string
     */
    getStylesAsString(): string;
    /**
     * Collect styles from the manager
     * @returns The styles as a string
     */
    collectStyles(): string;
    /**
     * Reset styles in the manager
     */
    resetStyles(): void;
    private initBrowserStyleSheet;
    private insertRuleInBrowser;
    private removeRuleInBrowser;
    private clearStylesInBrowser;
}
/**
 * StylrJs Sheet Manager
 * @returns The singleton instance of StyleSheetManager
 */
export declare const styleSheetManager: StyleSheetManager;
/**
 * Function to use in the server to get styles as string
 * @returns The styles as a string
 */
export declare function renderStyles(): string;
export {};
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