Sparkline rendering bug

[mcrascal]

Bug Description Sparkline in the dev workspace is showing a flat line.

[ItsMeBrianD]

Additional Context:

In BigValue.svelte; a sparkline is available as a prop. When provided a tiny-linked-chart is rendered. On the example page, it appears that this is still working, but the scale of the Y axis may be getting thrown off. In the image below; the type="line" was removed, to render as a bar chart; and there is some data visible.

[archiewood]

I think there's good rationale to replace svelte-tiny-linked-charts with eCharts in the BigValue:

Demo repl

[hughess]

I’m replacing the svelte-tiny-linked-charts dependency with our own echarts-based sparklines.

I’ve got a setting for interactive - if false, it just renders an SVG. If true it gives you tooltips. Not sure what the default should be, but I’m thinking we’ll need the static version when we eventually put sparklines into tables so as not to overwhelm the page with echarts instances.

Having some fun messing around with interactivity - this accepts a valueFmt and dateFmt:

What’s also cool is these can be used inline outside of BigValue:

[hughess]

Since these are all time series, we could also connect the sparklines when set to interactive: