mathjs/lib/json/reviver.js

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser and offers an integrated solution to work with numbers, big numbers, complex numbers, units, and matrices.

'use strict';

function factory (type, config, load, typed) {
  /**
   * Instantiate mathjs data types from their JSON representation
   * @param {string} key
   * @param {*} value
   * @returns {*} Returns the revived object
   */
  return function reviver(key, value) {
    var constructor = type[value && value.mathjs];
    if (constructor && typeof constructor.fromJSON === 'function') {
      return constructor.fromJSON(value);
    }

    return value;
  }
}

exports.name = 'reviver';
exports.path = 'json';
exports.factory = factory;