import { OutputStream } from './stream';
/**
 * User interface layer for command line outputs.
 */
export declare namespace UI {
    enum TAB {
        ZERO = 0,
        ONE = 1,
        TWO = 2,
        THREE = 3,
        FOUR = 4
    }
    type IOutputBody = string | string[];
    type IOutputGrid = (string | number)[][];
    class Writer extends OutputStream {
        /** ivar reference to chalk as 'color' */
        color: import("chalk").Chalk & {
            supportsColor: import("chalk").ColorSupport;
        };
        /**
         * output a block of text
         * @param body paragraph text
         * @param tab indentation
         */
        paragraph(body: IOutputBody, tab?: TAB): Writer;
        /**
         * Print a section to the ui with heading.
         * @param heading section heading
         * @param body section text
         */
        outputSection(heading: string, body: IOutputBody): Writer;
        /**
         * Print a multiline message with specified indentation
         * @param body message to print
         * @param tabs indentation tabs (1 tab = 2 spaces)
         * @param trim whether or not to trim each line's content
         */
        outputLines(body: IOutputBody, tabs?: TAB, trim?: boolean): Writer;
        /**
         * Output an aligned grid of the text matrix
         * @param table matrix of rows/cols
         * @param spacing spacing between items
         * @param indent grid indentation
         */
        outputGrid(table: IOutputGrid, spacing?: TAB, indent?: TAB): Writer;
        /**
         * Create an aligned grid of the text matrix. Very basic for the time-being
         * @param table matrix of rows/cols
         * @param spacing spacing between items
         */
        grid(table: IOutputGrid, spacing?: TAB): string;
        /**
         * determine col widths from a rows/colums in a table
         * @param table a table structure with columns
         */
        private _colWidths;
        /**
         * get indent by tabs
         * @param tabs
         */
        private _indent;
        /**
         * format text with same indent for each line
         */
        private _indentLines;
        /**
         * Lineify text
         */
        private _lines;
    }
    function cleanText(text: string): string;
}