mathjs/lib/esm/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

import Decimal from 'decimal.js';
import { factory } from '../../utils/factory.js';
var name = 'BigNumber';
var dependencies = ['?on', 'config'];
export var createBigNumberClass = /* #__PURE__ */factory(name, dependencies, _ref => {
  var {
    on,
    config
  } = _ref;
  var BigNumber = Decimal.clone({
    precision: config.precision,
    modulo: Decimal.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
});