export declare function isCssVar(key: string): boolean;
export declare function isJsonLike(value: any): boolean;
export declare function parseJson(strValue: string): {
    theme: string;
    size?: string;
    lineHeight?: string;
    style?: string;
    weight: string;
};
export declare function isNumber(value: any): boolean;
export declare function forEach(obj: object, iteratee: (value: any, key: any) => void): void;
export declare function reduceObj(obj: object, iteratee: (acc: any, currentValue: {
    key: string;
    value: any;
}, index?: number) => object): object;
export declare function pickBy<T>(obj: object, predicate: (value: any) => boolean): {
    [s: string]: T;
};
export declare function escapeHtml(str: string): string;
export declare function parenthesisAreBalanced(str: string): boolean;