Version & Feature Matrix¶

This page provides IDE compatibility information and a per-version breakdown of features added to the ReScript IntelliJ Plugin. For the versioning policy, release workflow, and authoritative source of each piece of version information, see the developer-facing version reference.

IDE Compatibility¶

Plugin Version	IntelliJ Platform	JDK	ReScript	Language Server
0.1.2 – 0.1.16.3	2025.3+	21+	v11+	`@rescript/language-server` 1.0.0+ (latest stable recommended)
Next release (unreleased)	2026.1.4+	25+	v11+	`@rescript/language-server` 1.0.0+ (latest stable recommended)

Warning

The next release raises the minimum IDE to 2026.1.4. It is compiled against IntelliJ Platform 2026.2, which emits Java 25 bytecode, and 2026.1 is the first release whose bundled runtime (JBR 25) can load it. IDEs on 2025.3 keep receiving 0.1.16.3 from the Marketplace.

Note

Native features (syntax highlighting, code folding, brace matching, etc.) work without the language server. LSP-powered features (completion, diagnostics, definition jump, etc.) require @rescript/language-server 1.0.0 or later to be installed in your project. Older 0.x releases are not supported because the plugin uses LSP extensions (rescript/compilationStatus, textDocument/createInterface, textDocument/openCompiled, semantic tokens) introduced in 1.x.

Features by Version¶

0.1.16

Released 2026-06-16

Feature	Category
IntelliJ Platform 2026.2 EAP compatibility (navbar, plugin-descriptor lookup, sendRequestSync)	Bug Fix
verifier-cli 1.405 + `recommended()` verification IDEs	Infrastructure

0.1.15

Released 2026-06-13

Feature	Category
Editor-grade syntax highlighting in tool windows (Type Info, Notebook, signature search, PPX)	Improvement
Colour-coded diagram semantics (Variant Flow arms, Dependency node roles, Interop risk bands)	Improvement
Off-UI-thread dependency diagram & type impact resolution	Bug Fix
Tool window panel scaffold + coroutine debounce	Refactoring
IntelliJ Platform 2026.1.2; Expo SDK 56	Infrastructure

0.1.14

Released 2026-05-13

Feature	Category
Type Narrowing Visualizer (per-arm narrowed types)	InlayHints
Switch Flow Diagram (Visual / Source toggle, Mermaid + DOT)	ToolWindow
Module Dependency Diagram — Visual mode	ToolWindow
Type Impact Preview	ToolWindow
Notebook Worksheet (`.resnb`)	ToolWindow
JS Interop Risk Map	ToolWindow
Type Coverage Heat Map	ToolWindow
Add Missing Switch Arms intention	Intention
Rename Variant Constructor intention	Intention
Hoogle-style Type Signature Search	Navigation
Monorepo workspace detection	Improvement
Tauri / TanStack Start / Remix RR v7 / Astro / Waku / Hono+Inertia templates	Wizard

0.1.13

Released 2026-04-27

Feature	Category
Module Dependency Diagram (Mermaid + DOT export)	ToolWindow
res-x (HTMX on Bun) project template	Wizard
Validation Library selection (zod / sury)	Wizard
Bun package manager option	Wizard
Full-Stack GraphQL variant	Wizard
Schema-driven settings panel	Refactoring

0.1.12

Released 2026-04-17

Feature	Category
React Native (Community CLI) template	Wizard
Full-Stack project template	Wizard
Hono GraphQL template (yoga, GraphiQL, Drizzle)	Wizard
vitest smoke tests across all templates	Infrastructure
PackageManager selection in wizard	Wizard

0.1.11

Released 2026-04-01

Feature	Category
TypeScript/JSX paste conversion	Paste
REPL icon and improved input area	REPL
REPL resizable split, auto-scroll, history navigation	REPL
REPL syntax highlighting in input area	REPL
UI test framework with Remote-Robot	Infrastructure

0.1.10

Released 2026-03-19

Feature	Category
Benefit descriptions in Sphinx feature docs	Documentation
Japanese translations for all Sphinx docs	Documentation
Health checker extraction	Refactoring
Completion weigher deduplication	Improvement
Path utilities consolidation	Improvement

0.1.9

Released 2026-03-16

Feature	Category
File type recovery startup activity	Infrastructure

0.1.8

Released 2026-03-12

Feature	Category
Missing keyboard shortcuts in docs	Documentation
Missing settings documentation in Sphinx docs	Documentation
Undocumented features added to Sphinx docs	Documentation

0.1.7

Released 2026-03-11

Bug fixes only (threading fixes, icon attribute fix, version string fix).

0.1.6

Released 2026-03-10

Bug fixes only (EDT threading, GenerateGroup, testCreator extension point).

0.1.5

Released 2026-03-10

Feature	Category
JUnit 5 migration	Refactoring
Regex centralization	Refactoring
Brace balance extraction	Refactoring
Postfix template deduplication	Refactoring

0.1.4

Released 2026-03-06

Feature	Category
Process utility extraction	Refactoring

0.1.3

Released 2026-03-05

Feature	Category
Plugin icon	Improvement
Verifier warnings fix	Improvement

0.1.2

Released 2026-03-03 – Initial release with 109 features

Syntax

Feature	Description
Syntax highlighting	JFlex lexer-based token coloring for all ReScript constructs
Semantic highlighting	LSP semantic tokens for high-precision coloring
Color scheme settings	Per-token color customization (Darcula / Default themes)
Brace matching	`{}`, `[]`, `()` pair highlighting
Code folding	Module, declaration, and block comment folding
`//#region` folding	Custom folding markers
Commenter	Line (`//`) and block (`/* */`) comment toggling
Breadcrumbs	Scope path display at editor top
Context Info	Sticky top-level declaration headers on scroll

Completion

Feature	Description
LSP completion	Type-aware intelligent completion via language server
Postfix completion	`.switch`, `.pipe`, `.log`, `.some`, `.ok`, `.error`, `.ignore`, `.promise`, `.await`
Live templates	15+ snippets (`let`, `mod`, `switch`, `if`, `@module`, `@val`, `comp`, etc.)
Live template context	ReScript-specific context + `moduleName`/`componentName` macros
Completion confidence	Suppress completion popup in comments and strings
Completion weigher	Context-based candidate ranking
Signature Help	Parameter info popup on `(` input
Parameter Info Handler	Labeled argument display via `Ctrl`+`P`
Lookup char filter	Character filtering during candidate selection

Feature	Description
Definition jump	`Ctrl`+`Click` / `Ctrl`+`B` to definition
Find Usages	Symbol usage search with WordsScanner indexing
Go to Symbol	`Cmd`+`Option`+`O` symbol search
Search Everywhere	`Shift`+`Shift` unified file/symbol search
Go to Related	Navigate between `.res`/`.resi`/`.js` related files
Go to Implementation	`.resi` to `.res` implementation jump (`Ctrl`+`Alt`+`B`)
Go to Super	`.res` to `.resi` declaration jump (`Ctrl`+`U`)
Go to Test	Implementation/test file navigation (`Ctrl`+`Shift`+`T`)
`.res`/`.resi` switch	`Alt`+`O` to toggle implementation/interface
Navigation bar	Structure-based navigation bar
External documentation	Belt/Js module docs via `Shift`+`F1`
Quick documentation	PSI-based fallback docs via `Ctrl`+`Q` / hover
File Include Provider	`open` statement file navigation
Type signature search	Reverse function lookup by type signature
Run Anything	`Ctrl`+`Ctrl` for ReScript CLI commands

Editing

Feature	Description
20+ Intention Actions	Wrap with Some/Ok/Error, @genType, labeled args, pipe conversion, etc.
Surround With	Wrap selection in if/switch/try/block (`Ctrl`+`Alt`+`T`)
Unwrap/Remove	Remove Some/Ok/Error/if/switch/try/braces (`Ctrl`+`Shift`+`Delete`)
Smart Enter	Complete statement and newline (`Shift`+`Enter`)
Enter Handler	Auto-continue doc/line comments
Join Lines	Smart join for let/pipe/arrow
Word Selection	Expand/shrink selection for strings, brackets, comments
Statement Mover	Move top-level declarations up/down (`Alt`+`Shift`+`Up/Down`)
Move Element Left/Right	Comma-separated element reordering
JSX close tag	Auto-insert closing tag on `>`
Backspace Handler	JSX tag pair deletion
Copy/Paste Pre-Processor	String literal escape on paste
Paste as JSON.t	Clipboard JSON to ReScript `JSON.t`
Paste as JSX	HTML to ReScript JSX conversion
Split/Join List	Toggle single-line/multi-line lists
Code Block Handler	Block boundary detection (`Ctrl`+`Shift`+`[`/`]`)
Qualified Name Copy	Full qualified name copy (`Cmd`+`Shift`+`Alt`+`C`)
File templates	Module, Interface, Component templates
Code Rearranger	Auto-sort top-level declarations
Strip Trailing Spaces	Preserve whitespace in string literals
Editor Floating Toolbar	Format/Open JS/Create Interface toolbar

Run & Build

Feature	Description
Run configuration	ReScript build execution via rescript.json
Gutter run icons	Run icons in `.res` file gutter
Build status widget	Compiler status in status bar
Build auto-start prompt	`rescript watch` suggestion on project open
Console filter	Clickable file:line links in compiler output
Compiled JS preview	Real-time preview of compiled JavaScript
Open compiled JS	Open corresponding `.js` file (`Alt`+`Shift`+`J`)
Format on save	External formatter via `rescript format`
Format check	Detect unformatted code with Quick Fix
Interface file generation	`.res` to `.resi` auto-generation
Project wizard	12 project templates (Basic, Vite+React, Next.js, etc.)
Framework detector	Auto-detect ReScript via rescript.json
LSP auto-install	One-click language server installation
Restart LSP action	Restart LSP server from Tools menu

Testing

Feature	Description
Test runner	jest/vitest auto-detection with SMTRunner
Test source filter	`_test.res`, `.test.res`, `__tests__/` recognition

Analysis

Feature	Description
Real-time diagnostics	Inline compile errors/warnings via LSP
Inlay hints	Inferred type annotations
Code Lens	Type signature display above functions
Error Lens	Inline diagnostics at line end
Type mismatch hints	Structured Expected/Actual type display
Type mismatch diff	Color-coded type error diff
Inspections	Duplicate open, empty module, missing config, signature sync, mutability, style lint
Reanalyze integration	Dead code / unhandled exception analysis
Reanalyze server mode	Daemon mode for fast incremental analysis
Import optimizer	Auto-remove duplicate/unused opens (`Ctrl`+`Alt`+`O`)
Quick Fixes	Add open, qualify reference, generate function, type hole suggestions
Problem highlight filter	Suppress highlights in node_modules
Expression type	Show type at cursor (`Ctrl`+`Shift`+`P`)
Pipe chain type hints	Intermediate types in `->` pipe chains
PPX visualization	PPX annotation effects as inlay hints
Color provider	Color preview swatches for #hex, rgb, hsl
Inspection suppressor	`// noinspection` comment support

Advanced

Feature	Description
Refactoring (Extract Variable)	Extract expression to `let` binding (`Ctrl`+`Alt`+`V`)
Refactoring (Extract Function)	Extract to new function (`Ctrl`+`Alt`+`M`)
Refactoring (Inline)	Inline variable/function (`Ctrl`+`Alt`+`N`)
Refactoring (Change Signature)	Modify function signature (`Ctrl`+`F6`)
Refactoring (Introduce Constant)	Extract literal to constant
React component extraction	Extract JSX to new component
Rename	LSP-powered symbol rename
Safe Delete	Usage-checked safe deletion
Name suggestion	Type/filename-based name suggestions
Generate actions	Switch arms, module type, make function, record value, JSON encoder/decoder, module impl
.d.ts binding generation	TypeScript `.d.ts` to ReScript `external` conversion
Structure view	File symbol tree
Module hierarchy	Module dependency tree
Call hierarchy	Callers/Callees tree (`Ctrl`+`Alt`+`H`)
Dependency diagram	Module dependency graph visualization
Package dependencies view	rescript.json dependency tree tool window
Type Info toolwindow	Always-visible type display
REPL	Interactive execution environment
Worksheet mode	`.resw` interactive evaluation
Scratch file	ReScript scratch file creation
PPX expansion view	PPX macro expansion tool window
Compiled JS nesting	Nest compiled JS under `.res` in Project View
`.resi` nesting	Nest `.resi` under `.res` in Project View
Project View decorator	“has interface” suffix, rescript.json version
VCS Code Vision	Author/last-change annotations
Stub index	Fast symbol search via PSI stub index
Open statement index	File-based index for fast module lookup
Spellcheck dictionary	ReScript-specific terms
`%raw()` JS injection	JavaScript highlighting in `%raw()`
`%re()` RegExp injection	RegExp language injection
Markdown ReScript highlight	ReScript in ```rescript code fences
Grazie text extractor	Natural language extraction for Grazie
JSON Schema	Completion/validation for rescript.json
Reader mode	Read-only view for node_modules `.res`/`.resi`
Auto Import options	Settings > Editor > Auto Import UI
Predefined code style	“ReScript Standard” preset
GitHub error reporter	Automatic error reporting to GitHub Issues
Highlight usages	Matching keyword highlighting (switch/if/try)
Element signature	Folding state persistence
TODO indexing	TODO/FIXME pattern recognition
LSP initialization options	6 settings sent to LSP server
Dump LSP State	Debug LSP internal state