Moderne licensed

Migrate to Kotlin 2.x

Recipe IDorg.openrewrite.kotlin.migrate.Kotlin1To2$KtRecipeArtifactio.moderne.recipe:recipes-kotlin

Modernizes a Kotlin 1.x codebase for Kotlin 2.x: replaces stdlib APIs deprecated between 1.4 and 2.0 with their modern equivalents, swaps JVM-only java.lang/java.util helpers for multiplatform Kotlin extensions, migrates inline class to @JvmInline value class, and removes @OptIn annotations for experimental markers that have since graduated to stable.

Composite recipeProprietary

Add to your build

Get a download tokenThis recipe is Moderne licensed, so the token must belong to a Moderne customer. It replaces YOUR_DOWNLOAD_TOKEN below.

~/.gradle/gradle.properties

codeGenomeUsername=you@example.com
codeGenomeToken=YOUR_DOWNLOAD_TOKEN

build.gradle.kts

plugins {
    id("org.openrewrite.rewrite") version("latest.release")
}

rewrite {
    activeRecipe("org.openrewrite.kotlin.migrate.Kotlin1To2$KtRecipe")
}

repositories {
    mavenCentral()
    maven {
        url = uri("https://artifacts.codegenomeproject.org/maven")
        credentials {
            username = providers.gradleProperty("codeGenomeUsername").get()
            password = providers.gradleProperty("codeGenomeToken").get()
        }
    }
}

dependencies {
    rewrite("io.moderne.recipe:recipes-kotlin:0.5.0")
}

Then run

./gradlew rewriteRun

Usage

This recipe has no required configuration options. You’ll need the Moderne CLI configured before running the command below.

mod run . --recipe org.openrewrite.kotlin.migrate.Kotlin1To2$KtRecipe

If the recipe isn’t available locally, install it with:

mod config recipes jar install io.moderne.recipe:recipes-kotlin:RELEASE

Definition

This recipe runs the following recipes in order.

Use modern Kotlin stdlib idiomsorg.openrewrite.kotlin.migrate.UseModernKotlinStdlibApis$KtRecipe
Use kotlin.math instead of java.lang.Mathorg.openrewrite.kotlin.migrate.UseKotlinMath$KtRecipe
Use Kotlin number extensions instead of java.lang.Integer/Long/Double/Float/Booleanorg.openrewrite.kotlin.migrate.UseKotlinNumberApis$KtRecipe
Use Char extensions instead of java.lang.Characterorg.openrewrite.kotlin.migrate.UseKotlinChar$KtRecipe
Use Kotlin collection extensions instead of java.util.Collectionsorg.openrewrite.kotlin.migrate.UseKotlinCollections$KtRecipe
Use Kotlin array extensions instead of java.util.Arraysorg.openrewrite.kotlin.migrate.UseKotlinArray$KtRecipe
Use kotlin.text.Regex instead of java.util.regex.Patternorg.openrewrite.kotlin.migrate.UseKotlinRegex$KtRecipe
Use @JvmInline value class instead of inline classorg.openrewrite.kotlin.migrate.UseValueClass$KtRecipe
Remove redundant @OptIn annotationsorg.openrewrite.kotlin.migrate.RemoveRedundantOptIns$KtRecipe

Data tables

Structured output this recipe can produce.

Source files that had resultsSource files that were modified by the recipe run.org.openrewrite.table.SourcesFileResults
Source files that had search resultsSearch results that were found during the recipe run.org.openrewrite.table.SearchResults
Source files that errored on a recipeThe details of all errors produced by a recipe run.org.openrewrite.table.SourcesFileErrors
Recipe performanceStatistics used in analyzing the performance of recipes.org.openrewrite.table.RecipeRunStats