Kotlin/kotlin-lsp kotlin-lsp/v262.4739.0 on GitHub

Call hierarchy (textDocument/prepareCallHierarchy, callHierarchy/incomingCalls, callHierarchy/outgoingCalls) — invoke "Show Call Hierarchy" / "Show Incoming/Outgoing Calls" on a Kotlin function or property to see who calls it and which symbols it calls. Fixes #143.
Code folding (textDocument/foldingRange) — Kotlin function and class bodies, blocks, imports, and multiline comments can now be collapsed in the editor.
Smart insertion of parentheses, braces, and quotes — auto-pairing and overtyping work for KDoc brackets, string templates, raw strings, generic angle brackets, when / lambda braces, and char literals.
File templates (IntelliJ-style) — newly created Kotlin files are generated from configurable templates that support predefined variables and conditional expressions. Templates are configured through VS Code settings.

override completion no longer throws an exception on methods that carry annotations. Fixes #160.
Kotlin compiler settings (including compiler plugins like Compose) are now correctly computed for non-standard Gradle source sets — i.e., anything beyond main and test. Fixes #169.
Cross-language references in mixed Kotlin/Java projects with non-standard Gradle source sets are now resolved correctly. Fixes #166.

Warning

The features listed in this section are not finalized.

They may contain bugs and are likely to change significantly in future releases — do not depend on their current behavior.

Import of Android projects is now supported by Kotlin LSP 🎉
🐛 Debug Adapter Protocol (DAP) for Kotlin — attach to a running JVM, set line breakpoints, pause/resume, step over/in, inspect threads, stack frames, and variables, and evaluate simple expressions.

🚀 Index storage migrated to RocksDB — more robust state management and better performance.
VS Code extension settings have been renamed from kotlinLSP.* to intellij.*.
New intellij.buildTool setting controls which build-system importer should be preferred.
📦 New bundling layout — use the bin/intellij-server executable to launch the standalone server. The legacy kotlin-lsp.sh launcher is deprecated and will be removed in future releases.
Standalone archives are now platform-specific: .sit for macOS, .tar.gz for Linux, and .zip for Windows.
stdio mode stability — the JVM's own stdout is now isolated from the LSP framing channel, so unexpected output from the JVM no longer corrupts the protocol stream.
⚠️ Kotlin LSP now requires JDK 25 to run.

Kotlin/kotlin-lsp kotlin-lsp/v262.4739.0 v262.4739.0 on GitHub