@walletpack/core/dist/util/IdGenerator.js

> TODO: description

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));

var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));

var nodeCrypto = typeof window === 'undefined' ? require('crypto') : null;

var getRandomNumber = function getRandomNumber() {
  var nodeJsEnv = function nodeJsEnv() {
    return parseInt(nodeCrypto.randomBytes(8).toString('hex'), 16) / 0xffffffffffffffff;
  };

  var browserEnv = function browserEnv() {
    var arr = new Uint32Array(1);
    window.crypto.getRandomValues(arr);
    return arr[0] / (0xffffffff + 1);
  };

  return nodeCrypto ? nodeJsEnv() : browserEnv();
};

var IdGenerator =
/*#__PURE__*/
function () {
  function IdGenerator() {
    (0, _classCallCheck2["default"])(this, IdGenerator);
  }

  (0, _createClass2["default"])(IdGenerator, null, [{
    key: "rand",
    value: function rand() {
      return getRandomNumber();
    }
    /***
     * Generates a random string of specified size
     * @param size - The length of the string to generate
     * @returns {string} - The generated random string
     */

  }, {
    key: "text",
    value: function text(size) {
      var text = "";
      var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";

      for (var i = 0; i < size; i++) {
        text += possible.charAt(Math.floor(IdGenerator.rand() * possible.length));
      }

      return text;
    }
    /***
     * Generates a random number of specified size
     * @param size - The length of the number to generate
     * @returns {string} - The generated random number ( as a string )
     */

  }, {
    key: "numeric",
    value: function numeric(size) {
      var add = 1;
      var max = 12 - add;
      if (size > max) return IdGenerator.numeric(max) + IdGenerator.numeric(size - max);
      max = Math.pow(10, size + add);
      var min = max / 10,
          number = Math.floor(IdGenerator.rand() * (max - min + 1)) + min;
      return ("" + number).substring(add);
    }
  }]);
  return IdGenerator;
}();

exports["default"] = IdGenerator;