Function set

src/context/stats.tsx:41–43

(name: string, value: number)

      metrics.set(name, (metrics.get(name) ?? 0) + value);
    },
    set(name: string, value: number) {
      metrics.set(name, value);
    },
    observe(name: string, value: number) {
      let h = histograms.get(name);
      if (!h) {