Add Glint-by-default announcement post

content/glint-by-default.md

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+---
+title: Glint Is Now Enabled by Default in Ember
+authors:
+  - peter-wagenet
+date: 2026-05-01T00:00:00.000Z
+tags:
+  - '2026'
+  - typescript
+  - glint
+---
+
+Starting with this release of the Ember CLI app and addon blueprints, [Glint][glint] is enabled by default. This implements [RFC #976: Enable Glint by Default][rfc-976]. New apps and addons get template type-checking and editor tooling out of the box — no extra opt-in required.
+
+Glint is the static template type-checker for Ember. With Glint, your `.gts` and `.gjs` templates are type-checked at the same time as your TypeScript code: invocations of unknown components, missing arguments, mistyped block parameters, and unresolved helper imports become build-time errors instead of runtime surprises. The Glint TypeScript Server plugin also surfaces those diagnostics inline in any tsserver-aware editor.
+
+[glint]: https://typed-ember.gitbook.io/glint/
+[rfc-976]: https://github.com/emberjs/rfcs/pull/976
+
+## What changed
+
+When you generate a new TypeScript app:
+
+```shell
+ember new my-app --typescript
+```
+
+…the blueprint now installs the Glint v2 stack by default:
+
+- `@glint/ember-tsc` — the `ember-tsc` CLI used by the new `lint:types` script (`ember-tsc --noEmit`), plus a standalone language server.
+- `@glint/tsserver-plugin` — a TypeScript Server plugin (Volar-based) that augments the TS language service with template-aware diagnostics. This is the editor integration path; install [the Glint VS Code extension][vscode-ext] (or [`ember.nvim`][ember-nvim] for Neovim) to enable it.
+- `@glint/template` — type definitions for Glimmer templates.
+
+[vscode-ext]: https://marketplace.visualstudio.com/items?itemName=typed-ember.glint2-vscode
+[ember-nvim]: https://github.com/NullVoxPopuli/ember.nvim
+
+JavaScript apps generated by [`@embroider/app-blueprint`][app-blueprint] also install the Glint stack so you can take advantage of editor tooling, even without authoring TypeScript. The JS blueprint emits a `jsconfig.json` (rather than `tsconfig.json`) to signal that no CLI type-check is wired up by default — Glint just powers your editor.
+
+[app-blueprint]: https://github.com/embroider-build/app-blueprint
+
+## What's gone
+
+Glint v2 supports template-tag (`.gts` / `.gjs`) authoring exclusively, so the v1 environment-and-registry pattern for `.hbs` templates has been retired:
+
+- `@glint/environment-ember-loose` and `@glint/environment-ember-template-imports` are no longer installed.
+- The `glint.environment` key is no longer emitted in `tsconfig.json`.
+- The addon blueprint no longer scaffolds a `template-registry.ts` or its public entrypoint in the rollup config.
+
+Apps that still author components, helpers, or modifiers in `.hbs` will not get template type-checking until those files are converted to template-tag (codemods are available). Route templates remain authorable as either `.hbs` or `.gts` (via `ember-route-template`).
+
+## Adding Glint to an existing app
+
+If you have an existing TypeScript app that hasn't enabled Glint yet, the migration is small:
+
+1. Remove the v1 packages if you have them (`@glint/core`, `@glint/environment-ember-loose`, `@glint/environment-ember-template-imports`).
+2. Install the v2 stack:
+
+   ```shell
+   npm install --save-dev @glint/ember-tsc @glint/template @glint/tsserver-plugin typescript@~5.7
+   ```
+
+3. In `tsconfig.json`, drop any `glint` key and add `@glint/ember-tsc/types` to `compilerOptions.types`.
+4. Replace the `lint:types` script: `tsc --noEmit` → `ember-tsc --noEmit`.
+5. Install the Glint editor extension for your editor of choice.
+
+For JavaScript apps that want editor tooling, install the same packages (and `@ember/app-tsconfig`) and add a minimal `jsconfig.json` extending `@ember/app-tsconfig`.
+
+## Opting out
+
+If you don't want Glint in a freshly-generated app, you can remove `@glint/*` from `devDependencies` and delete the `lint:types` script (or replace it with `tsc --noEmit`) — nothing else in the blueprint depends on Glint.
+
+## Thanks
+
+Thanks to the [Glint maintainers and contributors][glint-contributors] who have been steadily building toward v2, and to everyone who used the v1 preview and reported back. Glint by default has been a long time coming; we're glad to see it land.
+
+[glint-contributors]: https://github.com/typed-ember/glint/graphs/contributors

tag/glint.md

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+---
+name: Glint
+image:
+imageMeta:
+---