How to use the getInstanceByDom function from echarts

AMapView.js

GitHub: billy-poon/echarts-amap

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      type: 'amapRoam'
  });
}

function resizeHandler(e) {
  echarts.getInstanceByDom(api.getDom()).resize();
  moveHandler.call(this, e)
}

var throttledResizeHandler = throttle(resizeHandler, 300, amap);

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chartUtil.js

GitHub: dream-num/chartMix

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const container = document.getElementById(chart_id);

if (chartPro === 'echarts') {
    const options = echartsEngine(chartOptions);

    let chart = echarts.getInstanceByDom(container);
    if (chart == null) {
        chart = echarts.init(container)
    }

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+ 3 other calls in file