CODEWITHSUNDEEP
javascriptnode.jsbrowser
Jeanluca Scaljeri
Jeanluca Scaljeri

Reputation: 29159

Only show logging info in dev-mode in NodeJS/Browser

I have a javascript class which can be used in both the browser and NodeJS.

Suppose the class looks like this

class BarFoo {
    lookup() {
         // Do magic
         if (magicFailed && window.DEVELOP) {
             console.log('Show some info to help debugging...');
         }
    }
    ...
}

To make this example also work for NodeJS I can imaging that the global In this example I only show the log message if the app is in developing mode (window.DEVELOP === true). But I would like to use this class also in a nodeJS app, so I don't have a window object. What is the preferred way to set this up for both?

Upvotes: 0

Views: 1134

Answers (1)

Rudi
Rudi

Reputation: 2995

You could do it like this:

Start your app with:

NODE_ENV=development node app.js

Then check it like so:

const isServer = typeof window === 'undefined'
const isDev = isServer ? process.env.NODE_ENV === 'development' : window.DEVELOP

if (isDev) {
  // ...
}

Upvotes: 1

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