Add @glint/type-test package

.gitignore

@@ -2,4 +2,5 @@ node_modules
 yarn-error.log
 test-packages/ephemeral
 .eslintcache
+*.tsbuildinfo
 *.js.map

packages/type-test/.gitignore

@@ -0,0 +1 @@
+lib/

packages/type-test/package.json

@@ -0,0 +1,22 @@
+{
+  "name": "@glint/type-test",
+  "version": "1.0.0-beta.1",
+  "repository": "typed-ember/glint",
+  "description": "Tools for testing inferred types in Glint-enabled templates",
+  "license": "MIT",
+  "author": "Dan Freeman (https://github.com/dfreeman)",
+  "type": "commonjs",
+  "main": "lib/index.js",
+  "exports": {
+    ".": "./lib/index.js"
+  },
+  "scripts": {
+    "test": "glint -p __tests__"
+  },
+  "dependencies": {
+    "expect-type": "^0.15.0"
+  },
+  "peerDependencies": {
+    "@glint/template": "^1.0.0-beta.1"
+  }
+}

packages/type-test/tsconfig.json

@@ -0,0 +1,9 @@
+{
+  "extends": "../../tsconfig.compileroptions.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "lib"
+  },
+  "include": ["src"],
+  "references": [{ "path": "../template" }]
+}

tsconfig.json

@@ -5,6 +5,7 @@
     { "path": "packages/environment-ember-template-imports" },
     { "path": "packages/environment-glimmerx" },
     { "path": "packages/template" },
+    { "path": "packages/type-test" },
     { "path": "packages/vscode" },
     { "path": "packages/scripts" },
     { "path": "test-packages/test-utils" }