/**
 * @returns {HTMLElement[]} All grid-header elements when the default template is used.
 */
export declare function getHeaders(grid: HTMLElement): HTMLElement[];
/**
 * @returns {string[]} textContents from all the grid-header elements when the default template is used.
 */
export declare function getHeaderTextContent(grid: HTMLElement): (string | null)[];
/**
 * @returns {HTMLElement[]} All grid-header elements when the default template is used.
 */
export declare function getContentRows(grid: HTMLElement): HTMLElement[];
/**
 * @returns {(string | null)[][]} All content-row text when the default template is used.
 */
export declare function getContentTextContent(grid: HTMLElement): (string | null)[][];
/**
 * @returns {string | null} returns the trimmed text content of the given `el`.
 */
export declare function getText(el: Node | null): string | null;
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