/**
 * @author Roman Vottner
 * @copyright 2020 Roman Vottner
 * @license Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { EventEmitter } from 'node:events';
import { Configuration } from './configuration';
import { type Separators } from './edi/separators';
import type { ElementEntry, SegmentEntry } from './validator';
export declare class Parser extends EventEmitter {
    private validator;
    configuration: Configuration;
    private tokenizer;
    private state;
    private segment;
    private element;
    constructor(configuration?: Configuration);
    separators(): Separators;
    onOpenSegment(segment: string, segmentEntry: SegmentEntry | undefined): void;
    onCloseSegment(): void;
    onElement(element: ElementEntry | undefined): void;
    onComponent(data: string): void;
    /**
     * Set an encoding level.
     * @param level - The encoding level name.
     */
    updateCharset(charset: string): void;
    /**
     * @summary Ends the EDI interchange.
     * @throws {Error} If more data is expected.
     */
    end(): void;
    private una;
    write(chunk: string): void;
    private errors;
}
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