import { type StyledChar } from '@alcalzone/ansi-tokenize';
import { type DOMNode } from './dom.js';
export type StringWidth = (text: string) => number;
/**
 * Character offset range within a text sequence.
 * Used for mapping DOM nodes to their character positions.
 */
export type CharOffsetRange = {
    start: number;
    end: number;
};
/**
 * Maps DOM nodes to their character offset ranges within squashed text.
 * This is the same character counting method used by getPositionAtOffset(),
 * ensuring consistent cursor position calculations across the codebase.
 */
export type CharOffsetMap = Map<DOMNode, CharOffsetRange>;
export declare function setStringWidthFunction(fn: StringWidth): void;
export declare function clearStringWidthCache(): void;
export declare function toStyledCharacters(text: string): StyledChar[];
export declare function styledCharsWidth(styledChars: StyledChar[]): number;
export declare function inkCharacterWidth(text: string): number;
export declare function wordBreakStyledChars(styledChars: StyledChar[]): StyledChar[][];
export declare function splitStyledCharsByNewline(styledChars: StyledChar[]): StyledChar[][];
export declare function widestLineFromStyledChars(lines: StyledChar[][]): number;
export declare function styledCharsToString(styledChars: StyledChar[]): string;
export declare function measureStyledChars(styledChars: StyledChar[]): {
    width: number;
    height: number;
};
/**
 * Calculate row and column position at a given character offset.
 * This is the unified cursor position calculation logic used by both
 * render-node-to-output.ts and output.ts.
 *
 * The character offset counting method matches CharOffsetMap used in
 * selection.ts and squash-text-nodes.ts, ensuring consistent behavior
 * between cursor positioning and text selection.
 *
 * Character counting rules:
 * - Each StyledChar counts by its value.length (handles combining marks)
 * - Newlines ('\n') advance row and reset column
 * - Other characters add their visual width to column
 */
export declare function getPositionAtOffset(styledChars: StyledChar[], targetOffset: number): {
    row: number;
    col: number;
};