Function opacityFunction

test/components/legendTests.ts:272–274

(d: any, i: number)

      });

      const opacityFunction = (d: any, i: number) => {
        return (d === "foo") ? 0.2 : 0.8;
      };
      legend.symbolOpacity(opacityFunction).redraw();
      rows = legend.content().selectAll<Element, any>(ENTRY_SELECTOR);