reign/lib/random/string.js

A persistent, typed-objects implementation.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = random;
exports.ascii = ascii;
function random() {
  return Math.random() > 0.7 ? multibyte() : ascii();
}

function ascii() {
  const length = Math.floor(Math.random() * 255);
  const chars = new Array(length);
  let seed = Math.round(Math.random() * 100000);

  for (let i = 0; i < length; i++) {
    seed = (seed + i * 333) % 127;
    if (seed < 32) {
      seed += 32;
    }
    chars[i] = seed;
  }

  return String.fromCharCode(...chars);
}

function multibyte() {
  const length = Math.floor(Math.random() * 255);
  const chars = new Array(length);
  let seed = Math.round(Math.random() * 100000);

  for (let i = 0; i < length; i++) {
    seed = (seed + i * 333) % 512;
    if (seed < 32) {
      seed += 32;
    }
    chars[i] = seed;
  }

  return String.fromCharCode(...chars);
}