export const HOUR = 3600e3,
  MIN = 60e3,
  DAY = 24 * HOUR;
export const clamp = (v: number, a = 0, b = 100) => Math.max(a, Math.min(b, v));
export const pick = <T>(xs: readonly T[]): T => xs[Math.floor(Math.random() * xs.length)];
export const rand = (a: number, b: number) => a + Math.random() * (b - a);
export const fmtMB = (n: number) => `${Math.round(n / 1e6)} MB`;
export const errorMessage = (e: unknown) => (e instanceof Error ? e.message : String(e));
/** A local date for download file names. */
export function dateKey(t: number) {
  const d = new Date(t);
  return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, "0")}-${String(d.getDate()).padStart(2, "0")}`;
}
export function download(raw: string, name: string) {
  const a = document.createElement("a");
  a.href = URL.createObjectURL(new Blob([raw], { type: "application/json" }));
  a.download = name;
  a.click();
  setTimeout(() => URL.revokeObjectURL(a.href), 1000);
}