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@videsk/window-node-polyfill

v1.3.1

Published

Polyfill of window in node js for testing purpose

Downloads

20

Readme

Window polyfill for NodeJS

Nodejs doesn't have window object (obviously, not?). So, when you want to test pure Javascript or Typescript code that have window dependencies like localStorage and many more that are only able on browsers, your tests will not works, because you will get the XXXX is not defined error.

So, this library was designed to use in Node testing environment with mocha, chai, etc. where have browsers APIs dependencies. Some features of browsers was don't do what do you want like document.createElement('div'), but will returns you an object where you have access to properties and functions.

If you don't use a window polyfill you will get an error like this:

window is not defined

How to use

First install as dev dependency, never use in production server:

npm i @videsk/window-node-polyfill -D

Only need add on teh top of the test file, like this:

require('@videsk/window-node-polyfill');
...

Then you can access to the current properties:

  • window
  • window.localStorage
  • window.sessionStorage
  • document
  • document.createElement
  • document.body
  • document.body.appendChild
  • window.location
  • window.top
  • window.parent

Storage

// window.localStorage or window.sessionStorage
window.localStorage.getItem('my-key');
window.localStorage.setItem('my-key', 'my-value');
window.localStorage.removeItem('my-key');

Document

const element = document.createElement('div');
typeof element // object

Contributions

If you want add more properties, you're welcome, so send you PR or issue with feature request.

Copyrights

LGPL-2.1 License - By Videsk™