mathjs/examples/advanced/add_new_datatypes/MyType.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

// Note: This file is used by the file ./index.js

// factory function which defines a new data type MyType
function factory (type, config, load, typed) {
  // create a new data type
  function MyType (value) {
    this.value = value
  }
  MyType.prototype.isMyType = true
  MyType.prototype.toString = function () {
    return 'MyType:' + this.value
  }

  // define a new data type
  typed.addType({
    name: 'MyType',
    test: function (x) {
      // test whether x is of type MyType
      return x && x.isMyType
    }
  })

  // return the construction function, this will
  // be added to math.type.MyType when imported
  return MyType
}

exports.name = 'MyType'
exports.path = 'type' // will be imported into math.type.MyType
exports.factory = factory
exports.lazy = false // disable lazy loading as this factory has side
// effects: it adds a type and a conversion.