import { CustomStyle } from '../../types/styles';
export declare class WebComponentStyleUtils {
    static apply(style: string, shadowRoot: ShadowRoot | null): void;
    private static applyStyleSheet;
    private static addStyleElement;
    private static camelToKebab;
    static applyChatStyle(chatStyle: CustomStyle | undefined, shadowRoot: ShadowRoot | null): void;
}
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