Create-react-app: Add flag to react-scripts to suppress auto-opening `localhost:3000`

[whmountains]

Auto-opening the browser tab can get really annoying in certain situations.

• Sometimes I already have the window open and would prefer to just reload the tab.

• Other times I'm testing another browser and don't want to keep opening my default browser.

• Sometimes I need to open a custom URL. In my latest project, I need to add a query string to use the staging server instead of the production server. With the suppression flag, I could change my start script to: react-scripts start --no-open-browser; open localhost:3000?useapi=production

[Timer]

You can run BROWSER=none npm start or create an .env file with BROWSER=none in it to prevent the browser from opening.

Let us know if you need help with anything else!

[Kr3uz13]

What exactly does the script do? I haven't had time to even look at it tbh.

On Thu, May 4, 2017 at 9:36 PM, Joe Haddad [e-mail] wrote:

You can run BROWSER=none npm start or create an .env file with
BROWSER=none in it to prevent the browser from opening.

Let us know if you need help with anything else!

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[whmountains]

Thank you @Timer! That's exactly what I needed.

Was that documented somewhere? I tried to look around first but I could have missed it.

[gaearon]

Yea, it’s tucked away here:

https://github.com/facebookincubator/create-react-app/blob/master/packages/react-scripts/template/README.md#advanced-configuration

[gaearon]

Sometimes I already have the window open and would prefer to just reload the tab.

This is exactly what it should do on OS X. Unfortunately it’s not possible on other systems 😞

[whmountains]

Somehow it doesn't do that for me, and I have the latest OS X. Maybe because I'm using Firefox?

[Timer]

Yeah, our tab reloading only works for Chrome (sorry!).
If you're familiar with AppleScript, you can try to contribute Firefox support!