caught Error: Invalid date value at normalizeDate (date.js:75:11)

[RusinovAnton]

Hi! I'm basically using the example from the documentation and it breaks right away. What am I doing wrong here?

  const heatmap = new HeatMap({
    props: {
      data: [
        { date: new Date(), value: 1 },
        { date: new Date(), value: 2 },
      ],
    },
    target: "#some-container",
  });

Uncaught Error: Invalid date value
    at normalizeDate (date.js:75:11)
    at chunkWeeks (heatmap.js:59:17)
    at $$self.$$.update (SvelteHeatmap.svelte:113:7)
    at init (index.mjs:2133:8)
    at new SvelteHeatmap (SvelteHeatmap.svelte:126:50)
    at instance (Board.svelte:4:16)
    at init (index.mjs:2122:11)
    at new Board (Board.svelte:11:30)
    at createProxiedComponent (svelte-hooks.js?v=2d5741a5:341:9)
    at new ProxyComponent (proxy.js?v=2d5741a5:242:7)

[jonhuang]

It looks like the startDate and endDate are mandatory.