/**
 * Concat layer
 */
export default class ConcatLayer extends Layer {
    /**
     * @param {object} config object
     * @param {number} [config.axis] Axis
     */
    constructor({ axis, ...rest }: {
        axis?: number;
    });
    _axis: number;
    calc(...x: any[]): any;
    _sizes: any[];
    grad(bo: any): any[];
    toObject(): {
        type: string;
        axis: number;
    };
}
import Layer from './base.js';