Ember for Nova

Modern Ember.js support for Panic's Nova:
Tree-sitter syntax highlighting for .gts, .gjs, and .hbs files, plus optional
language intelligence (completions, diagnostics, go-to-definition) via the
Glint language server.

Features

• Syntax highlighting for:
• .gts — Glimmer TypeScript (first-class <template> components)
• .gjs — Glimmer JavaScript
• .hbs — Handlebars / Glimmer templates
• Embedded language injection: Glimmer templates inside <template> tags and
  hbs`…` tagged literals are highlighted, and <style> / <script> blocks
  inside templates fall back to CSS / JavaScript.
• Code folding and symbol navigation for components and templates.
• Glint language server integration for .gts / .gjs (opt-in, auto-detected).

Requirements

• Nova 10 or later (macOS 13+).
• For language intelligence: a project using Glint 2 — i.e. with
  @glint/core and @glint/ember-tsc installed (see below). Highlighting works
  without any of this.

Language intelligence (Glint)

The extension does not bundle a language server. It uses the copy of Glint
installed in your project, so it always matches your project's version.

1. Add Glint to your Ember app (Glint 2, for <template>-tag projects):

sh npm install --save-dev @glint/core @glint/ember-tsc

Configure Glint per the Glint docs
(a tsconfig.json / jsconfig.json with a glint block).

1. Open the project in Nova. The extension detects Glint and starts the server
   for .gts / .gjs files automatically.

If Glint isn't found, the extension stays dormant and highlighting still works.

Avoiding duplicate diagnostics

Glint takes over TypeScript duties for .gts / .gjs. This extension binds the
server to those two syntaxes only, so it won't collide with a general TypeScript
extension on .ts / .js. If you have a TypeScript extension that also attaches
to .gts / .gjs, disable it for those files to avoid double diagnostics.

Settings

Available globally (Extensions → Ember → Settings) and per-workspace
(Project → Project Settings → Ember):

Setting	Description
Enable Glint Language Server	Turn language intelligence on/off. Workspace setting overrides the global one.
Glint Language Server Path	Override the path to glint-language-server. Leave blank to resolve it from the project's node_modules.

Command palette: Restart Glint Language Server.

Contributing

Development, build instructions, and repository layout live in the
project repository.

Credits

Built on these Tree-sitter grammars:

• ember-tooling/tree-sitter-glimmer
• NullVoxPopuli/tree-sitter-glimmer-typescript
• NullVoxPopuli/tree-sitter-glimmer-javascript

Language intelligence provided by Glint.

Changelog

Version 1.0.1

• New extension icon.

Version 1.0

Initial release.

• Tree-sitter syntax highlighting for .gts, .gjs, and .hbs files.
• Glimmer template injection into <template> tags and hbs`…` literals;
  CSS / JavaScript injection into <style> / <script> blocks.
• Code folding and symbol navigation.
• Optional Glint 2 language server integration for .gts / .gjs, resolved from
  the project's node_modules, with enable/disable and server-path settings and a
  "Restart Glint Language Server" command.

MIT License

Copyright (c) 2026 Ramiro Franco

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.