How to assign type for setAll() method?

[intaek-h]

I am drawing a map chart to set markers at certain coordinates. However, my typescript warns me for putting my data type into unknown[].

const visitedRestaurantPointSeries = chart.series.push(
      am5map.MapPointSeries.new(root, {
        latitudeField: "latitude",
        longitudeField: "longitude",
      })
    );

    visitedRestaurantPointSeries.data.setAll(visitedRestaurants); <--- this here.

If I put exclamation mark at visitedRestaurants! like this, it stops. However, I don't think this is the best solution.

I have read the docs and it doesn't seem to have a guide for this.

I'm using amcharts5, nextjs 12.2. Thanks.

Environment (if applicable)

Additional context

[martynasma]

Well, setAll() method does not accept undefined.

So if the ! workaround is not good enough, you can do a check like this:

visitedRestaurantPointSeries.data.setAll(visitedRestaurants || []);

[intaek-h]

Hmm I was expecting using generic to somehow fix the allowed type for setAll() method. Are there any?

[martynasma]

setAll() needs an Array. Not entirely sure how generics could help you work around it to allow passing in anything else.

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