Where to Set EXPO_DEBUG value in ReactNative app?

Question

When I try to login in expo I got this error :

[exp] Set EXPO_DEBUG=true in your env to view the stack trace.

Do you know where exactly I have to set the value of EXPO_DEBUG?

Not a solution to your problem, but it seems like there is a problem with expo's auth system: https://twitter.com/expo_io/status/923466891837845504 — nairobi, Oct 26 '17 at 10:38
yeah you're right, but i'm still wondering where to set that parameter :D — Ansyori, Oct 26 '17 at 10:40

Daniel Neal · Answer 1 · 2018-01-15T09:09:35.100

19

EXPO_DEBUG is an environment variable, so you can set it by typing export EXPO_DEBUG=true in your shell.

edited Jan 15 '18 at 09:09

answered Jan 15 '18 at 08:56

Daniel Neal

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@hendra1 are you on windows? I think in that case you can use `set EXPO_DEBUG=true` – Daniel Neal Jun 20 '18 at 16:07
1

yes I'm on windows.. Ok set function is available thanks – hendra1 Jun 22 '18 at 06:12

score 11 · Answer 2 · edited Feb 17 '20 at 07:09

11

Just simply put the following commands in Windows os in sequence it will definitely work.

1:

cd Project_Dir>Set EXPO_DEBUG=true

2:

cd Project_Dir>expo start

This is working fine for me.

edited Feb 17 '20 at 07:09

David Buck

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answered Feb 13 '19 at 05:43

Rahul Patel

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Yes, Thanks @rahulpatel it's working fine. Thank again for your contribution. – Sanket Koladiya Feb 13 '19 at 05:46

score 6 · Answer 3 · answered May 02 '19 at 19:25

6

find the following solution according to os

Linux OS then type in shell export EXPO_DEBUG=true

Windows OS then type in console set EXPO_DEBUG=true

Mac os then type in console set EXPO_DEBUG=true

answered May 02 '19 at 19:25

krushali kevadiya

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Thank you for adding Mac os Instruction. It would be good thank you – Rahul Patel May 02 '19 at 19:27

score 4 · Answer 4 · answered Oct 08 '18 at 14:39

When you add some library into your project. then this type of problem occurs. This problem also occur for me when i try to add some navigator library into my react native project it happens then...

so if you are in a Linux OS then type in shell export EXPO_DEBUG=true

or if you are in a Windows OS then type in console set EXPO_DEBUG=true

After adding the line in console/Shell i hope project will work again.

score 3 · Answer 5 · answered Aug 20 '18 at 20:08

3

You can do it simple:

$env:EXPO_DEBUG = 'true'

in power shell

answered Aug 20 '18 at 20:08

Idan

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score 3 · Answer 6 · answered Nov 22 '19 at 18:06

This issue arises with the latest version on node which in my case is 12.13.1.

There are suppose to be some changes made in the node_module.

Go to node_module/metro-config/src/defaults/blacklist.js and change your var sharedBlacklist to

var sharedBlacklist = [
/node_modules[\/\\]react[\/\\]dist[\/\\].*/,
/website\/node_modules\/.*/,
/heapCapture\/bundle\.js/,
/.*\/__tests__\/.*/ 
];

score 2 · Answer 7 · answered Nov 17 '18 at 10:49

2

MY problem was solve by running

npm install

inside current Project directory if it still not work
than update expo to new latest version and restart project again

answered Nov 17 '18 at 10:49

score 2 · Answer 8 · answered Oct 22 '19 at 18:44

2

This works.

exp start Cancel ctrl c then do exp build:android.

answered Oct 22 '19 at 18:44

Jaywant Narwade

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score 1 · Answer 9 · answered Oct 30 '19 at 08:36

1

I deleted node_module and then re run npm install, and it worked

answered Oct 30 '19 at 08:36

Giancarlo G

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score 1 · Answer 10 · answered Dec 07 '19 at 19:02

in windows use cmd type set EXPO_DEBUG = 'true' then close cmd open again in the project file type expo start if it works graduation :) if not: in project path open node_modules folder and open this path node_module/metro-config/src/defaults/blacklist.js edit the file replace var haredBlacklist ... to this code

var sharedBlacklist = [
/node_modules[\/\\]react[\/\\]dist[\/\\].*/,
/website\/node_modules\/.*/,
/heapCapture\/bundle\.js/,
/.*\/__tests__\/.*/ 
];

Ravinsan · Answer 11 · 2019-06-27T06:35:11.927

0

just open your command prompt run Set EXPO_DEBUG=ture (not a project directorty) go to project directory run expo start(in a project directory)

edited Jun 27 '19 at 06:35

answered Jun 25 '19 at 07:06

Ravinsan

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score 0 · Answer 12 · answered Nov 29 '19 at 10:14

0

in mac OS export EXPO_DEBUG=true

or if you are in a Windows OS set EXPO_DEBUG=true

answered Nov 29 '19 at 10:14

Keshav Gera

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Where to Set EXPO_DEBUG value in ReactNative app?

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