🚀 Kotlin Jump

Instant Kotlin & Java navigation for VS Code
No language server. No delay. Just speed.

⚡ < 1 ms lookups • ⚡ 3,000+ files in <500ms

Kotlin Jump demo

⚡ Why Kotlin Jump?

Most navigation tools are:

slow
heavy
tied to language servers

Kotlin Jump is different.

👉 No LSP 👉 No JVM 👉 No waiting

Just instant navigation.

🚀 Features

Shortcut	Action
`Cmd+Click` / `F12`	Go to Definition — jump to any symbol instantly
`Cmd+F12`	Go to Implementation — interface → implementation
`Shift+F12`	Find All References — across entire project
`Alt+F7`	Find Usages — filtered panel with preview toggles

Cmd+Click adapts intelligently:

You're on...	It does...
Interface	Jumps to implementation
Interface method	Jumps to override
Method (single usage)	Jumps directly to usage

👉 No extra steps. Just flow.

🎯 Developer Productivity

Shortcut	Feature
`Cmd+T`	Workspace Search — fuzzy + filters (`@class:`, `@fun:`)
`Cmd+Shift+O`	Outline — symbol hierarchy
`Alt+Shift+T`	Go to Test — toggle `Foo.kt` ↔ `FooTest.kt`
Hover	Hover Info — signature, KDoc, package, types

🧠 What gets indexed

Kotlin

class, data class, sealed class, interface, object
enum, fun, @Composable fun
val, var, typealias

Java

class, interface, enum, record, @interface

⚙️ Configuration

Search “Kotlin Jump” in Settings (Cmd+,) or use:

{
  "kotlinJump.excludeFromReferences": ["**/src/test*/**", "**/src/debug/**/*Preview.kt"],
  "kotlinJump.testSourceSets": ["/src/test/", "/src/androidTest/"],
  "kotlinJump.smartNavigation": true,
  "kotlinJump.excludePatterns": ["**/build/**", "**/.gradle/**", "**/generated/**"],
  "kotlinJump.maxIndexedFiles": 10000,
  "kotlinJump.concurrency": 20,
  "kotlinJump.parserWorkers": 4
}

⚡ Performance

⚡ <1 ms lookup time
⚡ <500 ms indexing (3,000+ files)
⚡ O(1) symbol resolution

No language server. No compiler. Just speed.

🛠 How it works

A lightweight regex-based parser builds an in-memory symbol table using optimized maps.

4 worker threads
incremental indexing
disk persistence

👉 Only changed files are re-parsed.

⚠️ Limitations

❌ No code completion (not an LSP)
❌ No refactoring
⚠️ Overloaded functions → selection list
⚠️ Extension functions → indexed by name only

📦 Install

Marketplace

Search “Kotlin Jump” in VS Code (Cmd+Shift+X)

VSIX

code --install-extension kotlin-jump-0.2.0.vsix

Build from source

git clone https://github.com/elumine-dev/kotlin-jump
cd kotlin-jump && npm install
node esbuild.js --production && npx @vscode/vsce package --no-dependencies
code --install-extension kotlin-jump-0.2.0.vsix

Kotlin Jump

Elumine