@tempots/std/random.js

Std library for TypeScript. Natural complement to the Tempo libraries.

const s = (t, r) => {
  if (t > r)
    throw new Error("min must be less than or equal to max");
  return Math.floor(Math.random() * (r - t + 1)) + t;
}, c = (t, r, n = !1) => {
  if (t > r)
    throw new Error("min must be less than or equal to max");
  const e = Math.random(), o = r - t;
  return e * o + t;
}, h = (t) => {
  if (t.length === 0)
    throw new Error("Cannot choose from empty array");
  const r = s(0, t.length - 1);
  return t[r];
}, l = (t, r) => {
  if (t.length === 0)
    throw new Error("Cannot choose from empty array");
  if (r > t.length)
    throw new Error("Cannot select more elements than available in array");
  if (r <= 0)
    return [];
  const n = [...t];
  for (let e = n.length - 1; e > 0; e--) {
    const o = s(0, e);
    [n[e], n[o]] = [n[o], n[e]];
  }
  return n.slice(0, r);
}, a = () => "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, (t) => {
  const r = Math.random() * 16 | 0;
  return (t === "x" ? r : r & 3 | 8).toString(16);
}), f = (t) => {
  if (t <= 0)
    return "";
  const r = "0123456789abcdef";
  let n = "";
  for (let e = 0; e < t; e++)
    n += r[s(0, r.length - 1)];
  return n;
}, u = (t) => {
  if (t <= 0)
    return new Uint8Array(0);
  const r = new Uint8Array(t);
  for (let n = 0; n < t; n++)
    r[n] = s(0, 255);
  return r;
}, i = (t) => {
  let r = 0;
  for (let e = 0; e < t.length; e++) {
    const o = t.charCodeAt(e);
    r = (r << 5) - r + o, r = r & r;
  }
  let n = Math.abs(r);
  return () => (n = (n * 1664525 + 1013904223) % 4294967296, n / 4294967296);
}, x = (t) => {
  for (let r = t.length - 1; r > 0; r--) {
    const n = s(0, r);
    [t[r], t[n]] = [t[n], t[r]];
  }
  return t;
}, d = (t) => x([...t]);
export {
  u as randomBytes,
  h as randomChoice,
  l as randomChoices,
  c as randomFloat,
  f as randomHex,
  s as randomInt,
  a as randomUuid,
  i as seedRandom,
  x as shuffle,
  d as shuffled
};