import { ElementRef, OnInit, OnDestroy, OnChanges, SimpleChanges, ChangeDetectorRef, SimpleChange } from '@angular/core';
export declare class GaugeComponent implements OnInit, OnDestroy, OnChanges {
    private cd;
    title: string;
    height: any;
    private _height;
    color: string;
    bgColor: string;
    format: Function;
    percent: any;
    private _percent;
    node: ElementRef;
    chart: any;
    initFlag: boolean;
    constructor(cd: ChangeDetectorRef);
    ngOnInit(): void;
    private createData();
    private draw();
    install(): void;
    uninstall(): void;
    ngOnChanges(changes: {
        [P in keyof this]?: SimpleChange;
    } & SimpleChanges): void;
    ngOnDestroy(): void;
}