harden locationToFeature against non-string country names #2122
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Before, with
locationmode: 'country names'
, non-string locations would throw an error:Now they're just ignored silently - as opposed to strings that are unrecognized that generate a console warning. If it's just empty it seems clear you don't even want a warning. I suppose if it's not empty but also not a string it could be nice to still generate a warning, though that's not how most of plotly.js handles invalid data...
cc @etpinard