@duskmoon-dev/code-engine

Deep fork of CodeMirror 6 + Lezer ecosystem — single package, zero dependencies.

Collapses 44 upstream repositories into one npm package with 42 tree-shakeable subpath exports.

Install

bun add @duskmoon-dev/code-engine
# or
npm install @duskmoon-dev/code-engine

Quick Start

import { EditorState } from "@duskmoon-dev/code-engine/state";
import { EditorView } from "@duskmoon-dev/code-engine/view";
import { basicSetup } from "@duskmoon-dev/code-engine/setup";
import { javascript } from "@duskmoon-dev/code-engine/lang/javascript";

new EditorView({
  state: EditorState.create({
    doc: 'console.log("Hello!");',
    extensions: [basicSetup, javascript()],
  }),
  parent: document.getElementById("editor")!,
});

Exports

Path	Description
/state	EditorState, Transaction, Text, StateField, StateEffect
/view	EditorView, ViewPlugin, Decoration, keymap, tooltips, panels, gutters
/language	Language, HighlightStyle, fold, indent, bracket matching
/commands	Default keymaps, history, undo/redo
/search	Search & replace
/autocomplete	Autocomplete, snippets, close brackets
/lint	Linting framework
/collab	Collaborative editing
/merge	Merge view
/lsp	LSP client integration
/language-data	Language metadata
/parser/common	Tree, SyntaxNode, Parser interface
/parser/lr	LR parser implementation
/parser/highlight	Syntax highlighting tags
/lang/*	22 language packs: JavaScript, Python, HTML, CSS, JSON, Markdown, XML, SQL, Rust, Go, Java, C++, PHP, Sass, Less, YAML, Angular, Vue, Liquid, Wast, Jinja, Lezer
/lang/legacy/*	Stream modes: Elixir, Ruby, Erlang, Dart, Swift, Kotlin, Lua, Shell, Dockerfile, TOML, Nginx, Nix, Haskell, and more
/theme/one-dark	One Dark theme
/theme/duskmoon	DuskMoonUI theme (CSS custom properties)
/keymaps/vim	Vim keybindings
/keymaps/emacs	Emacs keybindings
/setup	basicSetup and minimalSetup extension arrays

Development

bun install                           # install dependencies
bun test                              # run tests (503 tests across 37 files)
bun test test/core/state.test.ts      # run a single test file
bun run typecheck                     # type check
bun run build                         # full build pipeline
bun run verify                        # verify all export paths

License

MIT