Facebook Login Error: "Module XDMConfig has not been defined" - facebook-javascript-sdk

I am getting error "Module XDMConfig has not been defined" on implementing facebook login in Google Chrome, in firefox it is working fine.
How to identify and correct this issue?

Switching from the debug version to the production version solved this problem for me.

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IE11 - failed to open http://localhost:8080

I am trying to access my VueJS application running on my node server on IE11 by accessing the URL http://localhost:8080. However I cant access the same as only a blank screen appears. I have babel polyfill installed and imported in my main file and have babel presets already setup in babelrc file.
My app is currently running and is accessible on Chrome but not on IE11.
I don't get a single error message in console and have no clue what could be going wrong. Has anyone ever faced this?
You need to use polyfills. IE11 does not support ES2015, it needs to be transiled by babel. There seem to be various ways of doing this.
Please check this guide: jacklyons.me/how-to-fix-vuejs-not-working-in-ie11
or here: cli.vuejs.org/guide/browser-compatibility.html

Cannot attach debugger to chrome in React-native with unauthorized error

I am a newbie to React-native Development. I am able to run my app on android emulator by changing port to 8088 as my organization is using McAfee in port 8081. Everything is working fine but i am not able to debug my app in chrome. Whenever I press 'Debug JS remotely' I am getting unauthorised error in console and debugger-ui is not using react-native developer tools. I tried a lot and found some links to the problem.
This link addresses the problem but I am not getting how to pull the code from react-native master branch.
It has been two days and I am still struggling to find the solution. I will be thankful if someone helps me out there. Thanks in advance.
Remove "ALLOW-CONTROL-FLOW-ORIGIN" from chrome extention.
Uninstall build from device or Simulator/Emulator
Run Again
Hope it will be fixed.

Snack Expo Login Error

I've been using Snack Expo for some time now, but I can't login with my profile. I have created an expo profile and I can login with it in Expo (website and xde). However, when I try logging in to Snack, I get "Error: cannot log in".
Surprisingly, the problem was the browser. I was using Microsoft Edge and getting the error. When I tried logging in using another browser (Chrome), everything worked fine!
It also gives an error on Firefox.

SocketIO throws "Can't find variable: Reflect" on bad requests if chrome debugger is not connected

This is for both Android and IOS. I am using feathersjs by the way.
It seems one of the causes for this error is not importing babel-polyfill as suggested on the docs (for react-native).
Check this issue https://github.com/feathersjs/feathers/issues/395
And here the feather's react-native section on the docs
https://docs.feathersjs.com/clients/feathers.html#usage-with-react-native

window.googleapis is undefined

I am trying to add a G+ +1 button on my web page. I am following the steps provided on Google developers page, but I get the following error window.googleapis is undefined. The same error appears even on Google developers page (viewed in Firebug).
Why does this error appear?
And how can it be solved?
Looks like this error will appear only if the firebug is opened. Close firebug and refresh the page
I could reproduce the bug on Firefox 18.0.2 + Firebug 1.11.1, though as I said before not on Firefox 19.0 (with the same profile).
So obviously this was fixed in Firefox 19.0. If someone still sees that issue with that Firefox version, please comment at issue 6280.