frontend/src/lib/format.ts

export const fmtPrice = (v: number) =>
  v.toLocaleString("en-US", { minimumFractionDigits: 3, maximumFractionDigits: 3 });

export const fmtBps = (v: number) =>
  `${v >= 0 ? "+" : ""}${v.toFixed(1)} bps`;

export const fmtPct = (v: number, d = 3) => `${(v * 100).toFixed(d)}%`;

export const fmtScore = (v: number) => v.toFixed(1);

export const confidenceTone = (score: number): "positive" | "warning" | "negative" => {
  if (score >= 7.5) return "positive";
  if (score >= 4.5) return "warning";
  return "negative";
};

export const toneClasses = {
  positive: "text-positive",
  warning: "text-warning",
  negative: "text-negative",
  neutral: "text-text",
} as const;