export declare class CSSVarRegistry {
    private static _instance;
    private _registry;
    private constructor();
    static instance(): CSSVarRegistry;
    register(key: string, value: string): void;
    get(key: string): string | undefined;
    getVars(): Map<string, string>;
}
export declare const registerCSSVar: (key: string, value: string) => void;
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