kotlin-spring-reviewer

Review Kotlin Spring Boot projects by scanning for constructor injection, data class usage, WebFlux patterns, and coroutine integration. This Skill identifies violations of Kotlin idioms, improper lateinit usage, entity class design, dispatcher misuse, and non-blocking endpoint patterns to enforce modern async practices.

Enforce Kotlin idioms by auditing constructor injection over field injection, preferring regular classes for JPA entities over data classes, and replacing lateinit with proper initialization. This approach improves type safety, reduces boilerplate, and aligns code with Kotlin conventions.

Coroutines integrate with Spring WebFlux through structured concurrency, proper dispatcher selection (IO vs Default), and non-blocking endpoints. WebFlux combined with kotlinx-coroutines enables reactive, efficient request handling without thread blocking.

Yes, this reviewer targets both Spring Boot + Kotlin and Ktor server projects with build.gradle.kts configurations. It scans for WebFlux, Spring Data R2DBC, and ktor dependencies to guide reviews across both frameworks.

Use data classes for DTOs and request/response objects where immutability and structural equality matter. Use regular classes for JPA entities to avoid persistence conflicts, and ensure proper constructor injection for dependency management.

Blocking occurs from field injection, lateinit properties, blocking dispatcher usage, or synchronous endpoints despite coroutine declarations. This Skill identifies these patterns and guides migration to non-blocking, structured concurrency designs with correct dispatcher assignment.