import { Entity, IEntitySettings, IEntityPrivate, IEntityEvents } from "./Entity";
export interface IDataProcessorSettings extends IEntitySettings {
    /**
     * Format of the string dates in `dateFields`, such as `"yyyy-MM-dd"`.
     * Without it, strings are read by the browser's `Date`, which takes a
     * date-only string such as `"2024-03-15"` as midnight UTC.
     */
    dateFormat?: string;
    /**
     * Data fields to convert to timestamps. A nested field is written as a
     * path, such as `"values.date"`.
     */
    dateFields?: string[];
    /**
     * Data fields to convert to numbers. A nested field is written as a path,
     * such as `"values.value"`.
     */
    numericFields?: string[];
    /**
     * Data fields to convert to [[Color]] objects. A nested field is written as
     * a path, such as `"values.color"`.
     */
    colorFields?: string[];
    /**
     * Replaces empty values (`null`, `undefined` or `""`) in any field with
     * this value.
     */
    emptyAs?: any;
}
export interface IDataProcessorPrivate extends IEntityPrivate {
    /**
     * @ignore
     */
    deepFields?: string[];
}
export interface IDataProcessorEvents extends IEntityEvents {
}
/**
 * Converts data values, such as string dates and numbers, as data is added to
 * a component.
 *
 * @see {@link https://www.amcharts.com/docs/v5/concepts/data/#Pre_processing_data} for more info
 * @important
 */
export declare class DataProcessor extends Entity {
    _settings: IDataProcessorSettings;
    _privateSettings: IDataProcessorPrivate;
    protected _checkDates: boolean;
    protected _checkNumbers: boolean;
    protected _checkColors: boolean;
    protected _checkEmpty: boolean;
    protected _checkDeep: boolean;
    protected _afterNew(): void;
    protected _checkFeatures(): void;
    protected _checkDeepFeatures(): void;
    /**
     * Processes every row of `data`. Changes the objects in place.
     *
     * @param  data  Data rows
     */
    processMany(data: {
        [index: string]: any;
    }[]): void;
    /**
     * Processes one row (object) of data. Changes the object in place.
     *
     * @param  row     Data row
     * @param  prefix  Path of the row inside a parent row, used for nested fields
     */
    processRow(row: {
        [index: string]: any;
    }, prefix?: string): void;
    protected _maybeToNumber(field: string, value: any): any;
    protected _maybeToDate(field: string, value: any): any;
    protected _maybeToEmpty(value: any): any;
    protected _maybeToColor(field: string, value: any): any;
}
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