/**
 * Utilities for detecting changes in input values.
 * Used to distinguish between different editing operations (Delete vs Backspace, etc.)
 */
import type { ChangeRange } from './constants';
/**
 * Determines what changed based on caret positions before and after the change.
 * This is used to distinguish Delete (cursor stays) vs Backspace (cursor moves left).
 *
 * @param caretBefore - The caret position info before the change
 * @param inputValueBefore - The input value before the change
 * @param inputValueAfter - The input value after the change
 * @returns Change range information, or undefined if unable to determine
 *
 * @example
 * // Delete key: cursor at 2, endOffset: 1
 * findChangedRangeFromCaretPositions(
 *   { selectionStart: 2, selectionEnd: 2, endOffset: 1 },
 *   "1,234",
 *   "1,34"
 * ) // Returns: { start: 2, end: 3, deletedLength: 1, isDelete: true }
 */
export declare function findChangedRangeFromCaretPositions(caretBefore: {
    selectionStart: number;
    selectionEnd: number;
    endOffset?: number;
}, inputValueBefore: string, inputValueAfter: string): ChangeRange | undefined;
/**
 * Finds the change range by comparing old and new values.
 * This is a fallback when caret position info is not available.
 *
 * @param oldValue - The value before the change
 * @param newValue - The value after the change
 * @returns Change range information, or undefined if unable to determine
 *
 * @example
 * findChangeRange("1,234", "1,34")
 * // Returns: { start: 2, end: 3, deletedLength: 1, isDelete: true }
 */
export declare function findChangeRange(oldValue: string, newValue: string): ChangeRange | undefined;