build: Add errorprone checking to build process

Author: zml2008

build.gradle

@@ -1,8 +1,9 @@
 plugins {
+  alias libs.plugins.errorprone
   alias libs.plugins.indra
+  alias libs.plugins.indra.checkstyle
   alias libs.plugins.indra.licenseHeader
   alias libs.plugins.indra.sonatype
-  alias libs.plugins.indra.checkstyle
 }
 
 group = "net.kyori"
@@ -16,6 +17,7 @@ indraSonatype {
 dependencies {
   compileOnlyApi libs.jetbrainsAnnotations
   implementation gradleApi()
+  
   testImplementation platform(libs.junit.bom)
   testImplementation libs.junit.api
   testRuntimeOnly libs.junit.engine
@@ -32,9 +34,11 @@ allprojects {
   apply plugin: "net.kyori.indra.license-header"
   apply plugin: "net.kyori.indra.publishing"
   apply plugin: "net.kyori.indra.checkstyle"
+  apply plugin: "net.ltgt.errorprone"
 
   dependencies {
     checkstyle(libs.stylecheck)
+    errorprone(libs.errorprone)
   }
 
   indra {

gradle/libs.versions.toml

@@ -6,6 +6,7 @@ checkstyle = "10.3.3"
 indra = "2.1.1"
 junit = "5.9.0"
 stylecheck = "0.2.0"
+errorprone = "2.15.0"
 
 [libraries]
 jetbrainsAnnotations = "org.jetbrains:annotations:23.0.0"
@@ -18,6 +19,7 @@ junit-platformCommons = { module = "org.junit.platform:junit-platform-commons" }
 
 # build
 stylecheck = { module = "ca.stellardrift:stylecheck", version.ref = "stylecheck" }
+errorprone = { module = "com.google.errorprone:error_prone_core", version.ref = "errorprone" }
 
 # for renovate, do not use
 zCheckstyle = { module = "com.puppycrawl.tools:checkstyle", version.ref = "checkstyle" }
@@ -27,3 +29,4 @@ indra = { id = "net.kyori.indra", version.ref = "indra" }
 indra-checkstyle = { id = "net.kyori.indra.checkstyle", version.ref = "indra" }
 indra-licenseHeader = { id = "net.kyori.indra.license-header", version.ref = "indra" }
 indra-sonatype = { id = "net.kyori.indra.publishing.sonatype", version.ref = "indra" }
+errorprone = "net.ltgt.errorprone:2.0.2"