export declare const line: (columns: any, rows: any, settings: any, extra: any) => {
    data: never[];
    xAxis: {
        show: any;
        axisLabel: any;
        type: any;
    };
    yAxis: never[];
    metrics: any;
    series: never[];
    legend: {
        show: boolean;
        formatter: (name: any) => any;
    } | {
        show: boolean;
    };
    tooltip: {
        trigger: string;
        formatter: (items: any) => string;
    } | {
        show: boolean;
    };
    stack: any;
    tipHtml: any;
    itemStyle: any;
    axisSite: any;
    area: any;
};