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Provide more descriptive error message when source file is not found #9
Description
I required wrong file by mistake and got this message:
The actual message was obscured in Xcode console:
Error:
stack:
ModuleError@http://localhost:8081/Examples/Movies/MoviesApp.includeRequire.runModule.bundle:105:23
require@http://localhost:8081/Examples/Movies/MoviesApp.includeRequire.runModule.bundle:202:28
http://localhost:8081/Examples/Movies/MoviesApp.includeRequire.runModule.bundle:28141:33
require@http://localhost:8081/Examples/Movies/MoviesApp.includeRequire.runModule.bundle:243:30
http://localhost:8081/Examples/Movies/MoviesApp.includeRequire.runModule.bundle:27651:26
require@http://localhost:8081/Examples/Movies/MoviesApp.includeRequire.runModule.bundle:243:30
http://localhost:8081/Examples/Movies/MoviesApp.includeRequire.runModule.bundle:946:27
require@http://localhost:8081/Examples/Movies/MoviesApp.includeRequire.runModule.bundle:243:30
applyWithGuard@http://localhost:8081/Examples/Movies/MoviesApp.includeRequire.runModule.bundle:871:25
require@http://localhost:8081/Examples/Movies/MoviesApp.includeRequire.runModule.bundle:194:39
global code@http://localhost:8081/Examples/Movies/MoviesApp.includeRequire.runModule.bundle:28295:9
URL: http://localhost:8081/Examples/Movies/MoviesApp.includeRequire.runModule.bundle
line: 202
message: Requiring unknown module "./test/actions/RepoActionCreators". It may not be loaded yet. Did you forget to run arc build?"
It would be nice to display the actual error.
Activity
gaearon commentedon Jan 30, 2015
It looks like this message replaces the original message very quickly.
nick commentedon Jan 30, 2015
I found this too. I ended up commenting out these lines as a short term fix:
https://github.com/facebook/react-native/blob/master/Libraries/Bundler/Bundler.js#L49-L52
vjeux commentedon Jan 30, 2015
cc @amasad
amasad commentedon Jan 31, 2015
@gaearon in this case what module where you requiring?
amasad commentedon Jan 31, 2015
ok, it looks like you were requiring
RepoActionCreators. Did that module ever exist and then was deleted?The packager should definitely return an error and no code. But it also seems to be a bug that the error message has been replaced with a less useful one. cc @frantic
gaearon commentedon Jan 31, 2015
No, I mistyped the filename. When I fixed it, the error went away.
It's just unfortunate that the real error is always quickly replaced with a vague one.
In fact if you mistype a filename and keep pressing Cmd+R really really fast, that'll give you time to read the first actual error on the screen (before it gets replaced by the vague one).
joeyyang commentedon Feb 1, 2015
Replacing one error message with another is also giving me issues -- I have an npm module that's failing to load and having all the error messages persist would be very helpful in attempting to debug. Let me know what other information I can provide!
frantic commentedon Mar 27, 2015
@nicklockwood fixed this a while ago
JSONKit usage here may cause serious crash hard to debug(I found the …