# LocalStorage Not defined
**URL:** https://forums.fusetools.com/t/localstorage-not-defined/6679
**Category:** Bug Reports
**Created:** [October 3, 2017, 8:00pm UTC](https://forums.fusetools.com/t/localstorage-not-defined/6679 "2017-10-03T20:00:47Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Chris\_Timberlake](https://forums.fusetools.com/u/Chris_Timberlake)
#### Post date: [October 3, 2017, 8:00pm UTC](https://forums.fusetools.com/t/localstorage-not-defined/6679/1 "2017-10-03T20:00:47Z")
Fuse version 1.2.1 (build 13974)
OSX
I’m having an issue where localStorage is not defined. Per the release notes a shim should be enabled - but it appears to not exist. This is causing ParseJS to fail. According to the docs and examples, i believe i’m doing everything correctly. This happens in preview and in the iOS Simulator.
```auto
[Viewport]: Error: ReferenceError: localStorage is not defined: Name: ReferenceError: localStorage is not defined
Error message: Uncaught ReferenceError: localStorage is not defined
File name: js/parse.min.js
```
implParse.js
```auto
var Parse = require('./parse.min.js').Parse;
Parse.initialize(
"[...]",
"[...]"
);
Parse.serverURL = '[...]';
module.exports = { ParseImpl: Parse }
```
Usage
```auto
var Parse = require("./implParse.js").ParseImpl;
var GameScore = Parse.Object.extend("Venues");
var gameScore = new GameScore();
gameScore.set("Name", "[...]");
gameScore.set("City", "Las Vegas");
gameScore.set("State", "NV");
gameScore.save(null, {
success: function(gameScore) {
console.log('New object created with objectId: ' + gameScore.id);
},
error: function(gameScore, error) {
console.log('Failed to create new object, with error code: ' + error.message);
}
});
```
---
### Author:  [@Chris\_Timberlake](https://forums.fusetools.com/u/Chris_Timberlake)
#### Post date: [October 3, 2017, 8:02pm UTC](https://forums.fusetools.com/t/localstorage-not-defined/6679/2 "2017-10-03T20:02:58Z")
Adding to this - when a shim is applied manually. XMLHTTPRequest also fails to work.
```auto
[Viewport]: Error: Error: Cannot make a request: No definition of XMLHttpRequest was found.: Name: Error: Cannot make a request: No definition of XMLHttpRequest was found.
Error message: Uncaught Error: Cannot make a request: No definition of XMLHttpRequest was found.
File name: js/parse.min.js
Line number: 8403
```
---
### Author:  [@Uldis](https://forums.fusetools.com/u/Uldis)
#### Post date: [October 4, 2017, 12:53pm UTC](https://forums.fusetools.com/t/localstorage-not-defined/6679/3 "2017-10-04T12:53:12Z")
Hi Chris,
I have no idea what `parse.min.js` does with `localStorage`, but this little snippet works just fine in Fuse:
```auto
var myStorage = window.localStorage;
myStorage.setItem("myCat", "Tom");
console.log(myStorage.getItem("myCat"));
myStorage.removeItem("myCat");
```
I’m guessing the problem with `XMLHttpRequest` is going to turn out to be something similar.
---
### Author:  [@Chris\_Timberlake](https://forums.fusetools.com/u/Chris_Timberlake)
#### Post date: [October 4, 2017, 6:02pm UTC](https://forums.fusetools.com/t/localstorage-not-defined/6679/4 "2017-10-04T18:02:44Z")
FuseJS just uses localStorage for caching requests to/from the db. I removed ParseJS and inserted the snipped you posted into my mainview, and the problem remains the same. Adding to that i’ve done `uno clean` and `uno doctor` on the project and neither had a change. It seems the polyfills are nonexistent?
```auto
[Viewport]: Error: ReferenceError: window is not defined: Name: ReferenceError: window is not defined
Error message: Uncaught ReferenceError: window is not defined
File name: MainView.ux
Line number: 14
Source line: var myStorage = window.localStorage;
JS stack trace: ReferenceError: window is not defined
at Object._tempMethod (MainView.ux:14:21)
in Fuse.Reactive.DiagnosticSubject
[Viewport]: Error: ReferenceError: window is not defined: Name: ReferenceError: window is not defined
Error message: Uncaught ReferenceError: window is not defined
File name: MainView.ux
Line number: 14
Source line: var myStorage = window.localStorage;
JS stack trace: ReferenceError: window is not defined
at Object._tempMethod (MainView.ux:14:21)
in Fuse.Reactive.DiagnosticSubject
```
---
### Author:  [@Uldis](https://forums.fusetools.com/u/Uldis)
#### Post date: [October 5, 2017, 9:12am UTC](https://forums.fusetools.com/t/localstorage-not-defined/6679/5 "2017-10-05T09:12:37Z")
It’s a problem on your machine then, because that snippet works perfectly well on mine. Running `uno clean` is nice, but did you rebuild the project after you cleaned? Have you only tested local preview, or device previews too?