import { Dimension } from "../../types/misc";
import { ExcelHeaderData, ExcelSheetData } from "../../types/workbook_data";
/**
 * Get the relative path between two files
 *
 * Eg.:
 * from "folder1/file1.txt" to "folder2/file2.txt" => "../folder2/file2.txt"
 */
export declare function getRelativePath(from: string, to: string): string;
/**
 * Convert an array of element into an object where the objects keys were the elements position in the array.
 * Can give an offset as argument, and all the array indexes will we shifted by this offset in the returned object.
 *
 * eg. : ["a", "b"] => {0:"a", 1:"b"}
 */
export declare function arrayToObject<T>(array: T[], indexOffset?: number): {
    [key: number]: T;
};
/**
 * In xlsx we can have string with unicode characters with the format _x00fa_.
 * Replace with characters understandable by JS
 */
export declare function fixXlsxUnicode(str: string): string;
/** Get a header in the SheetData. Create the header if it doesn't exist in the SheetData */
export declare function getSheetDataHeader(sheetData: ExcelSheetData, dimension: Dimension, index: number): ExcelHeaderData;
/** Prefix the string by "=" if the string looks like a formula */
export declare function prefixFormulaWithEqual(formula: string): string;