This example demonstrates two types of legends built with D3 v5: a color legend for an ordinal scale and a size legend for a square-root scale. The color legend maps fruit names to distinct colors, while the size legend uses `sizeScale.ticks` to generate five circle radii. Both legends are rendered as SVG groups, with circles and text positioned using `spacing` and `textOffset` parameters from custom `colorLegend` and `sizeLegend` modules.