Debug JS Remotely #15805

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1. iegik commented on Sep 5, 2017

   

   iegik

   on Sep 5, 2017

   Last edited by iegik

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   I think, it's not a bug, it is a feature.
   With Debug enabled, I think for debug needs are included some additional es6 modules, such as Request, Symbol or some of RegExp features, So, ensure, that You have all dependences included, before start to scripting.

   For example,

   npm install --save es6-symbol
   import 'es6-symbol/implement';
   

   In production mode, you would not need to have redundant script included.

   Also, try the following configuration in gradle:

   buildTypes {
           debug {
               shrinkResources true
               debuggable true
               minifyEnabled true
               proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro", "devsupport.pro"
               applicationIdSuffix ".debug"
           }
           release {
               shrinkResources true
               signingConfig signingConfigs.release
               minifyEnabled true
               proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
           }
       }
   

   • Trouble handling android hardware back button react-navigation/react-navigation#1819
2. sm2017 commented on Sep 5, 2017

   

   sm2017

   on Sep 5, 2017

   Last edited by sm2017

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   @iegik I think it is a bug because , I use Symbol in a js file from 6 months ago , I don't change this file from 2-3 months ago , suddenly react-native Can’t find variable: Symbol only on android when remote debug is not enabled (see #15786). If it is not a bug and a feature why iOS has not this feature?

   If you think it is a feature , Why we lost BackHandler on android when remote debug is off? (See #15497)
3. iegik commented on Sep 5, 2017

   

   iegik

   on Sep 5, 2017

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   @sm2017 You can also try to debug with Android Monitor or logcat
4. stale commented on Nov 4, 2017

   

   staleBot

   on Nov 4, 2017

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   This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Maybe the issue has been fixed in a recent release, or perhaps it is not affecting a lot of people. If you think this issue should definitely remain open, please let us know why. Thank you for your contributions.
5. stale

   added

   StaleThere has been a lack of activity on this issue and it may be closed soon.There has been a lack of activity on this issue and it may be closed soon.

   on Nov 4, 2017
6. stale

   closed this as completedon Nov 11, 2017
7. dummerbd commented on Dec 20, 2017

   

   dummerbd

   on Dec 20, 2017

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   Just fyi for people finding this issue via Google, the problem as I understand it is Symbol is not supported in the current version of the JavaScript Core shipped with Android but it is supported natively on iOS which has a newer version of JSC. The reason you don't see this issue when using Remote Debug is because your JavaScript actually runs remotely in Chrome which does support Symbol.

   Long story short, use a polyfill for now like es6-symbol.

   👍React with 👍3Reacted by Paul "Joey" Clark, Arturs Jansons and Oleg Lebedev
8. joeytwiddle commented on Feb 26, 2018

   

   joeytwiddle

   on Feb 26, 2018

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   A possible polyfill solution is mentioned here
9. react

   locked and limited conversation to collaborators on May 15, 2018