import { AfterViewInit, ElementRef, OnInit } from '@angular/core';
export declare class NgFlowchartArrowComponent implements OnInit, AfterViewInit {
    arrow: ElementRef;
    set position(pos: {
        start: number[];
        end: number[];
    });
    opacity: number;
    containerWidth: number;
    containerHeight: number;
    containerLeft: number;
    containerTop: number;
    _position: {
        start: number[];
        end: number[];
    };
    private padding;
    private isLeftFlowing;
    constructor();
    ngOnInit(): void;
    ngAfterViewInit(): void;
    hideArrow(): void;
    showArrow(): void;
    private updatePath;
}