9.0.200 Hot Reload loading pages with files/folders it should be ignoring

[burdittw]

Describe the bug

Since upgrading to 9.0.200 when I run dotnet watch run and my web app writes to the logs folder to a log file it now sees it as a change and the watch process sees it as an event and hot reloads and my browser reloads the page. If I try to run it the way I used to with just the dotnet watch command then it goes into an infinite loop with the hot reload. I am using serilog to log to the console and a log file in a folder called logs. I have excluded the logs folder from the project and my project file looks like this now since I have added the Watch="false" pieces to it like the documentation states to do.

And here is what the console is showing what dotnet is doing:

Then the browser window reloads. This was not happening in 9.0.100, but I was having the issue of it not hot reloading the changes like other were in 9.0.100. Now with this issue it is worse. Hopefully a hotfix can be put out quickly or a work around.

To Reproduce

Just have the logger output to a log file within the project folder and run the dotnet watch run command and do something that causes it to write to the log file or add or delete files from the log folder.

[pateegon]

Confirm this issue, it happened to me.

[panosmacheras]

Confirming this issue in 9.0.202 as well, I have the same problem. It works fine in 9.0.102.

[bardkalbakk]

Experiencing the same thing with dotnet 9 sdk(9.0.300), except for me it affects the process of editing .vue files. This is not an issue with dotnet 8 sdk (8.0.409). I have just tested with .net 10 sdk(10.0.100-preview.4) and the issue is present there as well.

dotnet watch --list does not include .vue files, but it still triggers a reload editing these files. running dotnet watch --verbose confirms the reload

Quick fix for me right now is starting dotnet watch with this environment variable so at least the browser isnt refereshing everytime I edit my typescript and vue components:

DOTNET_WATCH_SUPPRESS_BROWSER_REFRESH=true

from console output:

dotnet watch ⌚ Updated  '[redacted]\Feature\[redacted]\js\Pages\[redacted]Page.vue'.
dotnet watch ⌚ File change: Update '[redacted]\Feature\[redacted]\js\Pages\[redacted]Page.vue'.
dotnet watch ⌚ File updated: .\Feature\[redacted]\js\Pages\[redacted]Page.vue

[tmat]

@burdittw Just double-checking, does your project set EnableDefaultItems to false?

[pateegon]

In my project file "EnableDefaultItems" did not exist.

[tmat]

@pateegon If it's not set in the project file then it likely defaults to true. In that case all files within the project directory, except those matching pattern set by DefaultItemExcludes (bin and out directories) are considered inputs to the build. dotnet-watch currently does not use DefaultItemExcludes, but it's something we're considering. You'd then need to add logs/*.log (or whatever pattern you'd like to be exclude) to the list of excludes like so:

<PropertyGroup>
  <DefaultItemExcludes>$(DefaultItemExcludes);logs/*.log</DefaultItemExcludes>
<PropertyGroup>

[pateegon]

@tmat Thank you for your assistance; this solution is working! (I tried it with .NET 9 SDK 9.0.300.)