export interface ChartOptions {
    minTime?: number;
    maxTime?: number;
    attribution?: string;
}
export interface ChartScaleLimits {
    minTime: number;
    maxTime: number;
    timeScale: number;
    minValue: number;
    maxValue: number;
    valueScale: number;
}
export interface ChartSeries {
    data: TimeSeriesValue[];
    min?: number;
    max?: number;
    unit?: string;
    formatter?: (value: number) => string;
}
export type TimeSeriesValue = [
    ts: number,
    v: number
];
export declare class Chart {
    protected strokeWidth: number;
    protected fontSizePx: number;
    protected el: SVGElement;
    protected series: ChartSeries[];
    protected options: ChartOptions;
    protected width: number;
    protected height: number;
    protected plotHeight: number;
    protected plotWidth: number;
    protected limits?: ChartScaleLimits;
    protected plotColor: string;
    protected labelBg: string;
    protected labelBgWidth: string;
    protected attribution: string;
    protected styles: {
        'font-family': string;
        'font-size': string;
        display: string;
        margin: string;
        'max-width': string;
    };
    constructor(el: HTMLElement, series: ChartSeries[], options?: ChartOptions);
    getLimits(): ChartScaleLimits;
    getHorizontalGridlines(): SVGElement[];
    getTimeScale(): SVGElement[];
    render(): void;
    plotLastValue(): void;
    plotData(): void;
    protected createLabel(x: number, y: number, text: string, anchor?: string): SVGElement[];
    protected createLargeLabel(x: number, y: number, text: string, anchor?: string): SVGElement[];
}
export declare const getLimits: (data: TimeSeriesValue[]) => {
    minTime: number;
    maxTime: number;
    minValue: number;
    maxValue: number;
};
export declare const getInterval: (range: number, maxDivisions: number) => number[];