@duskmoon-dev/code-engine

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

Collapses 44 upstream repositories into one npm package with 43 tree-shakeable subpath exports.

Live Playground · API Reference

Install

bun add @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 (2900+ tests across 51 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