React-native Expo Build Failed : Task :app:checkDebugDuplicateClasses FAILED [duplicate] - react-native

Question

Duplicate class kotlin.internal.jdk7.JDK7PlatformImplementations found in modules jetified-kotlin-stdlib-1.8.0 (org.jetbrains.kotlin:kotlin-stdlib:1.8.0) and jetified-kotlin-stdlib-jdk7-1.3.31 (org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.31)
Duplicate class kotlin.jdk7.AutoCloseableKt found in modules jetified-kotlin-stdlib-1.8.0 (org.jetbrains.kotlin:kotlin-stdlib:1.8.0) and jetified-kotlin-stdlib-jdk7-1.3.31 (org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.31)
**./gradlew clean **
build.gradle file:
buildscript {
ext {
buildToolsVersion = "30.0.0"
minSdkVersion = 23
compileSdkVersion = 33
targetSdkVersion = 30
googlePlayServicesAuthVersion = "16.0.1"
kotlinVersion = "1.8.0"
}
firebase: [
bom : "26.0.0"
]
repositories {
google()
jcenter()
mavenCentral()
}
dependencies {
classpath "com.android.tools.build:gradle:4.2.0"
classpath "com.google.gms:google-services:4.3.4"
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
}
}
def REACT_NATIVE_VERSION = new File(['node', '--print',"JSON.parse(require('fs').readFileSync(require.resolve('react-native/package.json'), 'utf-8')).version"].execute(null, rootDir).text.trim())
allprojects {
repositories {
configurations.all {
resolutionStrategy {
force "com.facebook.react:react-native:" + REACT_NATIVE_VERSION
}
}
mavenLocal()
maven {
url("$rootDir/../node_modules/react-native/android")
}
maven {
url("$rootDir/../node_modules/jsc-android/dist")
}
maven { url 'https://maven.google.com' }
google()
jcenter()
maven { url 'https://www.jitpack.io' }
}
}

Answer 1

I had the same problem with my app. It failed to build because of duplicate classes found in modules jetified-kotlin-stdlib-1.8.0 and jetified-kotlin-stdlib-jdk8-1.6.10
With the link, shared by Igor VANIAN : https://kotlinlang.org/docs/whatsnew18.html#usage-of-the-latest-kotlin-stdlib-version-in-transitive-dependencies
I added
dependencies {
...
implementation(platform("org.jetbrains.kotlin:kotlin-bom:1.8.0"))
}
to my android/app/build.gradle and Android builds fine now

Answer 2

I started having the same issue in react native native on the android side. I upgraded Kotlin to version 1.8.0 and built the app again and the issue was fixed. Maybe trying upgrading the kotlin version.
In android/build.gradle update the following
kotlinVersion = "1.8.0"
and add this under dependencies
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"

Answer 3

This can happen when you're using different versions for different Kotlin dependencies.
Try to check all Kotlin dependencies. In my case, issue was with this core-ktx
implementation "androidx.core:core-ktx:+"
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
Updating to this resolved issue
implementation "androidx.core:core-ktx:$kotlin_version"
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
Here kotlin_version = '1.7.0'. You can use your desired version.
Hope this will help others.

Answer 4

I was having the same problem since yesterday.
I found that the reason behind this could be the artifact merge in Kotlin 1.8.0. Here is an issue talking about this breaking change.
So setting kotlinVersion = "1.8.0" as #Narasimha said works. But I still didn't figure out what dependency changed overnight that somehow made kotlin-stdlib:1.8.0 appear in the build logs.

Answer 5

Thanks all, I solve it by doing two things
In android/build.gradle update the following
kotlinVersion = "1.8.0"
In android/app/build.gradle add the following in dependencies
implementation(platform("org.jetbrains.kotlin:kotlin-bom:1.8.0"))

Answer 6

I had the same issue today and I fixed it in a different way, if it helps anyone:
When I upgraded my kotlin to version 1.8 it started happening and I had to change my hilt version to 2.44. Now it's running normally.