iOS Bundle Release

I am experiencing an issue with threads in production/release.

2018-01-31 16:27:03.209993+0000 TestApp[72678:38924584] starting Thread (null)
2018-01-31 16:27:03.217 [fatal][tid:main] No bundle URL present.

Make sure you're running a packager server or have included a .jsbundle file in your application bundle.

My Threads don’t live in the root of the project, they live in ./App/Workers/*.thread.js. I have also followed the documentation for building .jsbundle files and adding them to ./ios.

In development, everything works as expected:

2018-01-31 17:14:34.192937+0000 TestApp[75866:39010763] starting Thread http://localhost:8081/./App/Workers/Test.Generate.thread.bundle?platform=ios&dev=true&minify=false
2018-01-31 17:14:34.193 [info][tid:com.facebook.react.ThreadManagerQueue][RCTCxxBridge.mm:187] Initializing <RCTCxxBridge: 0x6080001b42e0> (parent: <RCTBridge: 0x60c0002a57c0>, executor: (null))
2018-01-31 17:14:34.193265+0000 TestApp[75866:39010763] Initializing <RCTCxxBridge: 0x6080001b42e0> (parent: <RCTBridge: 0x60c0002a57c0>, executor: (null))

Am I experiencing this issue because my thread files don’t live in the root of the project?

[Traviskn]

Thanks, I’ve merged your update to the docs! Let me know if you run into any more issues

[Traviskn]

Hi @craigcoles, sorry you ran into this issue!

My understanding is that if your thread.js file lives in a different folder like App/Workers/MyWorker.thread.js, then you will need to re-create that same file structure in the ios folder. The path that you pass to the new Thread('some/path') is actually the native code filepath, relative to the ios folder in the root of your project. So in this case I believe you would need to open your project in xcode, right click on your root folder and select the “New Group” option to add an “App” folder, then select the “App” folder, right click, select the “New Group” option and create a “Workers” folder, then finally right click on the “Workers” folder and select the “add files to <your project>” option to add your worker js file to the native project.

For android you would create the matching folder structure in the android/app/src/main/assets/threads folder of your project.

Let me know if that makes sense or if it still doesn’t work for you. Keeping thread files at the root level definitely keeps things simpler so that you don’t need to add too many extra folders in your native ios and android directories. I’ll make some time to add a bit more explanation of this to the README as well