import type { Element } from "../../tui/elements.js";
import type { RunRow, TestRow } from "../rows.js";
export declare function testRow(inputId: string, over?: Partial<TestRow>): TestRow;
export declare function runRow(key: string, over?: Partial<RunRow>): RunRow;
export declare function flat(el: Element): string[];
/** Approximate the visual layout: children of a row concatenate onto
 *  one line; children of a column stack. */
export declare function screenText(el: Element): string;