css-vars-ponyfill typescript

css-vars-ponyfill.d.ts

declare module 'css-vars-ponyfill' {
  export default function cssVars(css: {
    variables: any,
    onSuccess?(cssText: string): void,
    onError?(message: string, node: any): void,
    onWarning?(message: string): void,
    onComplete?(cssText: string, styleNode: any): void,
  }): void;
}