viz crash.js

crash.js

'use strict';

const Viz = require('viz.js');
const { Module, render } = require('viz.js/full.render.js');

const viz = new Viz({ Module, render });
let total = 0;
async function graphviz(content) {
  const svg = await viz.renderString(content);
  total++;
  return Buffer.from(svg);
}

const content = `
digraph g {
    rankdir=LR;
    node [shape=record,width=01,height=.1];
	a[label="<1>Hash Table|<2>Node|<3>Node|...|<4>TreeNode"];
    {
        node1[label="{<1>A1|<2>A2|...|An}"]
        node2[label="{<1>B1|<2>B2|...|Bn}"]
        subgraph cluster_treenode{
            penwidth=0;
            node[shape=circle];
            root[label="", style=filled,fillcolor=black,width=.2];
            n1[label="", style=filled,fillcolor=red,width=.2]
            n2[label="", style=filled,fillcolor=black,width=.2]
            n3[label="", style=filled,fillcolor=black,width=.2]
            n4[label="", style=filled,fillcolor=red,width=.2]
            n5[label="", style=filled,fillcolor=black,width=.2]
            n6[label="", style=filled,fillcolor=black,width=.2]
            root->n1;
            n1->n2;
            n1->n3;
            root->n4;
            n4->n5;
            n4->n6;
        }
    }

    a:2:e->node1:1 [style=dashed];
    a:3:e->node2:1;
    a:4:e->root;
}
`;

graphviz(content).then(svg => {
  console.log('%j', svg);
});

setInterval(() => {
  graphviz(content).then(svg => {
    console.log('%d svg length: %d', total, svg.length);
  });
}, 10);