Package Exports

type-of-is

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (type-of-is) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Description

Determine and test types using constructor or Object.toString

Latest Version

1.0.0

Installation

npm install type-of-is

or in package.json

{
  ...
  "dependencies": {
    "type-of-is": "~1.0.0"
  }
}

Usage

var type = require('type-of-is');

type.of(obj)        provides constructor type of an object
type.ofs(obj)       provides type as String from {}.toString
type.is(obj, type)  tests whether obj is of type (constructor or String)

var type = require('type-of-is');

console.log(type.of('hi there ok'));  // [Function: String]
console.log(type.of(342));            // [Function: Number]
console.log(type.of({}));             // [Function: Object]
console.log(type.of([1, 2, 3]));      // [Function: Array]
console.log(type.of(null));           // null
console.log(type.of(undefined));      // undefined
console.log(type.of(true));           // [Function: Boolean]
console.log(type.of(function () {})); // [Function: Function]
console.log(type.of(/abcd/));         // [Function: RegExp]
console.log(type.of(new Date()));     // [Function: Date]
console.log(type.of(new Error()));    // [Function: Error]

console.log(type.ofs('hi there ok'));  // "String"
console.log(type.ofs(342));            // "Number"
console.log(type.ofs({}));             // "Object"
console.log(type.ofs([1, 2, 3]));      // "Array"
console.log(type.ofs(null));           // "Null"
console.log(type.ofs(undefined));      // "Undefined"
console.log(type.ofs(true));           // "Boolean"
console.log(type.ofs(function () {})); // "Function"
console.log(type.ofs(/abcd/));         // "RegExp"
console.log(type.ofs(new Date()));     // "Date"
console.log(type.ofs(new Error()));    // "Error"

console.log(type.is(true, Boolean));      // true
console.log(type.is("1231", Number));     // false
console.log(type.is("1231", String));     // true
console.log(type.is("1231", "String"));   // true
console.log(type.is("1231", Object));     // false
console.log(type.is([], Object));         // false
console.log(type.is({}, Object));         // true
console.log(type.is([], Array));          // true
console.log(type.is(new Date(), Date));   // true
console.log(type.is(new Date(), Object)); // false

var s = "hihihi";
var Stringy = type.of(s);
var t = new Stringy("hihihi");
console.log((s == t));                    // true
console.log((s === t));                   // false

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