Get SVG image of chart.EXCEL.yaml

name: Get SVG image of chart
description: ''
host: EXCEL
api_set: {}
script:
  content: |
    $("#setup").click(() => tryCatch(setup));
    $("#run").click(() => tryCatch(run));

    const sheetName = "Sample";

    async function run() {
      await Excel.run(async (context) => {
        const sheet = context.workbook.worksheets.getActiveWorksheet();
        const chart = sheet.charts.getItemAt(0);
        chart.load("id");
        await context.sync();
        const shapeChart = sheet.shapes.getItem(chart.id);
        let svgString = shapeChart.getAsImage(Excel.PictureFormat.svg);
        await context.sync();

        console.log(svgString.value);
        $("#content-main").html(svgString.value);

        // $("#content-main").html(
        //   '<img src="data:image/png;base64,' + imgString.value + '" style="background-color:black;" />'
        // );
      });
    }

    // Add sample worksheet
    async function setup() {
      await Excel.run(async (context) => {
        context.workbook.worksheets.getItemOrNullObject(sheetName).delete();
        const sheet = context.workbook.worksheets.add(sheetName);
        let range = sheet.getRange("A1:B3");
        range.values = [
          [12, 5],
          [17, 60],
          [33, 80]
        ];
        // Add chart
        let chart = sheet.charts.add(Excel.ChartType.xyscatterLinesNoMarkers, range, Excel.ChartSeriesBy.columns);
        await context.sync();
        sheet.activate();
        await context.sync();
        console.log("done");
      });
    }

    /** Default helper for invoking an action and handling errors. */
    async function tryCatch(callback) {
      try {
        await callback();
      } catch (error) {
        // Note: In a production add-in, you'd want to notify the user through your add-in's UI.
        console.error(error);
      }
    }
  language: typescript
template:
  content: |-
    <button id="setup" class="ms-Button">
      <span class="ms-Button-label">Setup Chart</span>
    </button>

    <button id="run" class="ms-Button">
      <span class="ms-Button-label">Run</span>
    </button>

    <h2>Show image blow:</h2>
    <div id="content-main"></div>
  language: html
style:
  content: |-
    section.samples {
        margin-top: 20px;
    }

    section.samples .ms-Button, section.setup .ms-Button {
        display: block;
        margin-bottom: 5px;
        margin-left: 20px;
        min-width: 80px;
    }
  language: css
libraries: |
  https://appsforoffice.microsoft.com/lib/1/hosted/office.js
  @types/office-js

  office-ui-fabric-js@1.4.0/dist/css/fabric.min.css
  office-ui-fabric-js@1.4.0/dist/css/fabric.components.min.css

  core-js@2.4.1/client/core.min.js
  @types/core-js

  jquery@3.1.1
  @types/jquery@3.3.1