mathjs/lib/cjs/type/bignumber/BigNumber.js

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with dif

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.createBigNumberClass = void 0;
var _decimal = _interopRequireDefault(require("decimal.js"));
var _factory = require("../../utils/factory.js");
const name = 'BigNumber';
const dependencies = ['?on', 'config'];
const createBigNumberClass = exports.createBigNumberClass = /* #__PURE__ */(0, _factory.factory)(name, dependencies, _ref => {
  let {
    on,
    config
  } = _ref;
  const BigNumber = _decimal.default.clone({
    precision: config.precision,
    modulo: _decimal.default.EUCLID
  });
  BigNumber.prototype = Object.create(BigNumber.prototype);

  /**
   * Attach type information
   */
  BigNumber.prototype.type = 'BigNumber';
  BigNumber.prototype.isBigNumber = true;

  /**
   * Get a JSON representation of a BigNumber containing
   * type information
   * @returns {Object} Returns a JSON object structured as:
   *                   `{"mathjs": "BigNumber", "value": "0.2"}`
   */
  BigNumber.prototype.toJSON = function () {
    return {
      mathjs: 'BigNumber',
      value: this.toString()
    };
  };

  /**
   * Instantiate a BigNumber from a JSON object
   * @param {Object} json  a JSON object structured as:
   *                       `{"mathjs": "BigNumber", "value": "0.2"}`
   * @return {BigNumber}
   */
  BigNumber.fromJSON = function (json) {
    return new BigNumber(json.value);
  };
  if (on) {
    // listen for changed in the configuration, automatically apply changed precision
    on('config', function (curr, prev) {
      if (curr.precision !== prev.precision) {
        BigNumber.config({
          precision: curr.precision
        });
      }
    });
  }
  return BigNumber;
}, {
  isClass: true
});