import { Selector, FieldDescription, DataTypeName, ScalarType } from '../types';
/**
 * Formats selected value to number.
 * @private
 * @param val Primitive or object.
 * @param elementSelector Function invoked per iteration.
 */
export declare function parseNumber(val: ScalarType, elementSelector?: Selector): number | undefined;
export declare function parseNumberOrNull(value: string | number): number | null;
/**
 * More wider datetime parser
 * @param value
 */
export declare function parseDatetimeOrNull(value: string | Date | number, format?: string | null): Date | null;
export declare function parseBooleanOrNull(val: boolean | string): boolean | null;
export declare function addDays(dt: Date, daysOffset: number): Date;
export declare function addBusinessDays(dt: Date, bDaysOffset: number, holidays?: (Date | string)[]): Date;
export declare function dateToString(d: Date, format?: string): string;
export declare function deepClone(obj: any): any;
export declare function workoutDataType(value: ScalarType, inType: DataTypeName | undefined): DataTypeName | undefined;
/**
 * generates a field descriptions (first level only) that can be used for relational table definition.
 * if any properties are Objects, it would use JSON.stringify to calculate maxSize field.
 * @param items
 */
export declare function getFieldsInfo(items: Record<string, ScalarType>[] | ScalarType[]): FieldDescription[];
export declare function processJson(jsonString: string, handlePathFunc: (path: (string | number)[], row: number, col: number) => boolean): void;
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