How to avoid getting error 'localStorage is not defined' on server in ReactJS isomorphic app?

node.js reactjs isomorphic-javascript

You could use a check whether the code is being executed on the server or on the client side by checking whether module is not 'undefined':

var isNode = typeof module !== 'undefined'

You can then proceed to only executed this code on the client side:

if(!isNode){   //use the local storage   var myItem = localStorage.getItem(itemTitle)}

However, you should already always check whether Storage is defined before using since not all browsers support it:

if(typeof(Storage) !== "undefined"){   //use the local storage}

node.js reactjs isomorphic-javascript

Standard has specific support for problems like this.

All you need to do is add a comment informing standard that there is a variable provided by the global scope.

// MyStuff.js/* global localStorage */// Use localStorage below with no linter errors

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