declare interface ColumnConfigurationDataType {
    column: string;
    delimiter?: string;
}

/**
 * Fetches a CSV file from a URL, parses it, and applies transformations based on the provided configuration.
 *
 * @param dataURL - The URL of the CSV file to fetch.
 * @param dataTransformation - Optional Handlebars template for data transformation.
 * @param columnsToArray - Optional columns configuration to transform certain columns to arrays.
 * @param debugMode - Optional flag to log data to the console for debugging.
 * @param delimiter - Optional delimiter used in the CSV file (default is comma).
 * @param header - Optional flag to specify whether the CSV file contains headers (default is true).
 *
 * @returns A promise that resolves to the parsed and transformed data.
 *
 * @example
 * fetchAndParseCSV('https://example.com/data.csv', '{{data}}', [], true)
 *   .then(parsedData => console.log(parsedData))
 *   .catch(error => console.error('Error:', error));
 */
export declare function fetchAndParseCSV(dataURL: string, dataTransformation?: string, columnsToArray?: ColumnConfigurationDataType[], debugMode?: boolean, delimiter?: string, header?: boolean): Promise<unknown>;

/**
 * Parses CSV data from a string, applying optional transformations.
 *
 * @param data - The CSV data as a string.
 * @param dataTransformation - Optional Handlebars template for data transformation.
 * @param columnsToArray - Optional columns configuration to transform certain columns to arrays.
 * @param debugMode - Optional flag to log data to the console for debugging.
 * @param delimiter - Optional delimiter used in the CSV file (default is comma).
 * @param header - Optional flag to specify whether the CSV file contains headers (default is true).
 *
 * @returns A promise that resolves to the parsed and transformed data.
 */
export declare function fetchAndParseCSVFromTextBlob(data: string, dataTransformation?: string, columnsToArray?: ColumnConfigurationDataType[], debugMode?: boolean, delimiter?: string, header?: boolean): Promise<unknown>;

/**
 * Fetches and parses a JSON file from a URL, and applies optional transformations.
 *
 * @param dataURL - The URL of the JSON file to fetch.
 * @param columnsToArray - Optional columns configuration to transform certain columns to arrays.
 * @param dataTransformation - Optional Handlebars template for data transformation.
 * @param debugMode - Optional flag to log data to the console for debugging.
 *
 * @returns A promise that resolves to the parsed and transformed data.
 */
export declare function fetchAndParseJSON(dataURL: string, columnsToArray?: ColumnConfigurationDataType[], dataTransformation?: string, debugMode?: boolean): Promise<any>;

/**
 * Fetches and parses data from multiple sources (CSV, JSON, API), and merges the results.
 *
 * @param dataURL - An array of file settings containing URLs, column configurations, and other settings.
 * @param idColumnTitle - Optional title of the ID column to merge data sources by.
 *
 * @returns A promise that resolves to the merged data from all sources.
 */
export declare function fetchAndParseMultipleDataSources(dataURL: FileSettingsDataType[], idColumnTitle?: string): Promise<any[]>;

/**
 * Fetches and transforms data from an API, and applies optional transformations.
 *
 * @param requestURL - The URL of the API to fetch data from.
 * @param headers - Optional headers to include in the API request.
 * @param columnsToArray - Optional columns configuration to transform certain columns to arrays.
 * @param dataTransformation - Optional Handlebars template for data transformation.
 * @param debugMode - Optional flag to log data to the console for debugging.
 *
 * @returns A promise that resolves to the transformed data.
 */
export declare function fetchAndTransformDataFromAPI(requestURL: string, headers?: any, columnsToArray?: ColumnConfigurationDataType[], dataTransformation?: string, debugMode?: boolean): Promise<any>;

declare interface FileSettingsDataType {
    dataURL: string;
    idColumnName: string;
    fileType?: 'csv' | 'json' | 'api';
    delimiter?: string;
    columnsToArray?: ColumnConfigurationDataType[];
    apiHeaders?: any;
    dataTransformation?: string;
}

export { }