This was raised by @SteveHawes at Dart-Code/Dart-Code#5898. I've tried to debug, but I'm not too familiar with the dwds code and I believe the issue is here somewhere.
To reproduce:
- Be on macOS (I don't know why, but I can't repro on Windows)
- Create an empty Flutter project
- Add a dependency to
pkg:args hosted here at a URL with slashes in it:
args:
hosted: https://dart.cloudsmith.io/ews/dart-bug/
version: ^2.7.0
- Add call to the code like
var a = ArgParser().parse([]); in your main build method
- Ctrl+Click into
parse() and add a breakpoint somewhere in code that will be hit
- Run the app using the Chrome device
The breakpoint is never hit and does not resolve:
The path on disk has url-encoded slashes in it, so the folder is named like dart.cloudsmith.io%47ews%47dart-bug on disk. In package_config.json, the path is recorded as a file:/// URI, so it gets encoded again. This means it shows as dart.cloudsmith.io%2547ews%2547dart-bug there (and in any places using file:/// URIs).
The VM Service traffic all looks reasonable, but my guess is that somewhere the url-encoding is being interpreted incorrectly, but it's tricky to debug (I don't know how I can attach a debugger to dwds when running against a real Flutter app, nor how to reproduce this in a test - as outside of Pub deps, I can't get characters like this to work in local files in the project, because both the analyzer and the compiler seem to handle them badly).
One thing I did notice in the VM Service traffic is that in some places there are incorrect paths that look like /Users/danny/Dev/Test Projects/dartcode_5898/packages/args/src/usage.dart, but this is not where the package is (I know the packages are at /packages/ for the web, but it seems like they should get mapped back to the pub cache and never to this path?).
This was raised by @SteveHawes at Dart-Code/Dart-Code#5898. I've tried to debug, but I'm not too familiar with the dwds code and I believe the issue is here somewhere.
To reproduce:
pkg:argshosted here at a URL with slashes in it:var a = ArgParser().parse([]);in your mainbuildmethodparse()and add a breakpoint somewhere in code that will be hitThe breakpoint is never hit and does not resolve:
The path on disk has url-encoded slashes in it, so the folder is named like
dart.cloudsmith.io%47ews%47dart-bugon disk. Inpackage_config.json, the path is recorded as afile:///URI, so it gets encoded again. This means it shows asdart.cloudsmith.io%2547ews%2547dart-bugthere (and in any places usingfile:///URIs).The VM Service traffic all looks reasonable, but my guess is that somewhere the url-encoding is being interpreted incorrectly, but it's tricky to debug (I don't know how I can attach a debugger to dwds when running against a real Flutter app, nor how to reproduce this in a test - as outside of Pub deps, I can't get characters like this to work in local files in the project, because both the analyzer and the compiler seem to handle them badly).
One thing I did notice in the VM Service traffic is that in some places there are incorrect paths that look like
/Users/danny/Dev/Test Projects/dartcode_5898/packages/args/src/usage.dart, but this is not where the package is (I know the packages are at/packages/for the web, but it seems like they should get mapped back to the pub cache and never to this path?).