import * as i0 from "@angular/core";
export declare class CommonService {
    private document;
    constructor(document: Document);
    getCSSVariablesValue(variable: string): string;
    setCSSVariable(variable: string, value: string): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<CommonService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<CommonService>;
}