Are there official Proguard rules for Ktor?

# ktor

[Lukasz Kalnik]

Are there official Proguard rules for Ktor?

[Lukasz Kalnik]

I'm facing the following error in an app consuming my library:

ERROR: Missing classes detected while running R8. Please add the missing classes or apply additional keep rules that are generated in /runner/work/demo-app/demo/build/outputs/mapping/release/missing_rules.txt.
ERROR: R8: Missing class org.slf4j.impl.StaticLoggerBinder (referenced from: void org.slf4j.LoggerFactory.bind() and 3 other contexts)

[Aleksei Tirman [JB]]

Can you try adding the line from this answer?

[Aleksei Tirman [JB]]

You can find a Proguard sample project here.

[Lukasz Kalnik]

I added

-dontwarn org.slf4j.**

To my library's Proguard rules and also to consumer rules.
However this didn't fix the problem. My library uses Ktor, and the app consuming the library doesn't build anymore with this error.

[Lukasz Kalnik]

The sample project you mentioned is for backend. I have an Android library and Android application, here the Proguard rules are probably a little bit different.

[Lukasz Kalnik]

I see that when I include this rule

-dontwarn org.slf4j.**

directly into my application (which consumes the library) then there is no error.
The error seems to be only when I include this rule in the library's consumer Proguard rules, somehow they are not consumed by the application.
This may be a problem with my CI though.

[Lukasz Kalnik]

Ok, the problem was indeed my CI somehow still reporting the original error, whereas there were some other classes (not Ktor related), which threw the errors.

[Lukasz Kalnik]

Your suggestion was sufficient. Thank you for your help!