samples/default_esm.html

<!doctype html>
<html>
  <head>
    <title>ESM Sample</title>
    <style>
      #app {
        width: 600px;
        height: 400px;
        display: block;
      }
    </style>
  </head>
  <body>
    <div id="app"></div>
    <script defer src="https://cdn.jsdelivr.net/npm/es-module-shims"></script>
    <script type="importmap-shim">
      {
        "imports": {
          "cytoscape": "https://cdn.jsdelivr.net/npm/cytoscape@3.15.0/dist/cytoscape.esm.min.js",
          "cytoscape-layers": "https://cdn.jsdelivr.net/npm/cytoscape-layers/dist/cytoscapelayers.esm.js",
          "cytoscape-bubblesets": "../build/index.esm.js"
        }
      }
    </script>
    <script type="module-shim">
      import cytoscape from 'cytoscape';
      import BubbleSets from 'cytoscape-bubblesets';
      cytoscape.use(BubbleSets);

      const cy = cytoscape({
        container: document.getElementById('app'),
        elements: [
          { data: { id: 'a' } },
          { data: { id: 'b' } },
          {
            data: {
              id: 'ab',
              source: 'a',
              target: 'b',
            },
          },
        ],
      });
      cy.ready(() => {
        const bb = cy.bubbleSets();
        bb.addPath(cy.nodes(), cy.edges(), null);
      });
    </script>
  </body>
</html>