CodecExtras

Various extensions to the codecs from Mojang's DFU, including:

• Codecs with comments
• Record codecs with large numbers of entries
• Codecs which decode to a different type than they encode from
• Codecs representing changes to mutable data

Artifacts are available on maven central (as of v3; for instructions for older versions, check the README on the appropriate branch):

repositories {
    mavenCentral()
}

The main artifact depends only on DFU and org.slf4j:slf4j-api, and may be jar-in-jar-ed:

dependencies {
    implementation('dev.lukebemish:codecextras:<version>')
}

For utilities supporting StreamCodecs and other MC-specific features, you will want to depend on the relevant artifact by capability. If using neoforge:

dependencies {
    implementation('dev.lukebemish:codecextras:<version>') {
        capabilities {
            requireFeature('minecraft-neoforge')
        }
    }
}

Or if using fabric:

dependencies {
    modImplementation('dev.lukebemish:codecextras:<version>') {
        capabilities {
            requireFeature('minecraft-fabric')
        }
    }
}

And if you need a platform-agnostic API for multiloader:

dependencies {
    implementation('dev.lukebemish:codecextras:<version>') {
        capabilities {
            requireFeature('minecraft-common')
        }
    }
}

This element depends on the main artifact, and may also be jar-in-jar-ed -- though you may need to use a newer version of loom or NeoGradle for support for capabilities in jar-in-jar.