declare module 'columnify' {
  declare function columnify(data: {[key: string]: any} | any[], options?: columnify.GlobalOptions): string;

  declare namespace columnify {
    export interface Options {
      align?: string;
      minWidth?: number;
      maxWidth?: number;
      paddingChr?: string;
      preserveNewLines?: boolean;
      truncateMarker?: string;
      showHeaders?: boolean;
      dataTransform?: (data: string) => string;
      headingTransform?: (data: string) => string;
    }

    export interface GlobalOptions extends Options {
      columns?: string[];
      columnSplitter?: string;
      config?: {
        [columnName: string]: Options;
      }
    }
  }

  export = columnify;
}