diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c6bba59
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,130 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+web_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional stylelint cache
+.stylelintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Next.js build output
+.next
+out
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and not Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+.temp
+.cache
+
+# Docusaurus cache and generated files
+.docusaurus
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..bda0302
--- /dev/null
+++ b/package.json
@@ -0,0 +1,18 @@
+{
+  "name": "repro-ts-5.4-glimmer-exports-issue",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "@glimmer/manager": "^0.87.1"
+  },
+  "devDependencies": {
+    "typescript": "5.4.0-dev.20240109"
+  }
+}
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
new file mode 100644
index 0000000..ab980af
--- /dev/null
+++ b/pnpm-lock.yaml
@@ -0,0 +1,105 @@
+lockfileVersion: '6.0'
+
+settings:
+  autoInstallPeers: true
+  excludeLinksFromLockfile: false
+
+dependencies:
+  '@glimmer/manager':
+    specifier: ^0.87.1
+    version: 0.87.1
+
+devDependencies:
+  typescript:
+    specifier: 5.4.0-dev.20240109
+    version: 5.4.0-dev.20240109
+
+packages:
+
+  /@glimmer/debug@0.87.1:
+    resolution: {integrity: sha512-rja9/Hofv1NEjIqp8P2eQuHY3+orlS3BL4fbFyvrE+Pw4lRwQPLm6UdgCMHZGGe9yweZAGvNVH6CimDBq7biwA==}
+    dependencies:
+      '@glimmer/interfaces': 0.87.1
+      '@glimmer/util': 0.87.1
+      '@glimmer/vm': 0.87.1
+    dev: false
+
+  /@glimmer/destroyable@0.87.1:
+    resolution: {integrity: sha512-v9kdMq/FCSMcXK4gIKxPCSEcYXjDAnapKVY2o9fCgqky+mbpd0XuGoxaXa35nFwDk69L/9/8B3vXQOpa6ThikA==}
+    dependencies:
+      '@glimmer/env': 0.1.7
+      '@glimmer/global-context': 0.87.1
+      '@glimmer/interfaces': 0.87.1
+      '@glimmer/util': 0.87.1
+    dev: false
+
+  /@glimmer/env@0.1.7:
+    resolution: {integrity: sha512-JKF/a9I9jw6fGoz8kA7LEQslrwJ5jms5CXhu/aqkBWk+PmZ6pTl8mlb/eJ/5ujBGTiQzBhy5AIWF712iA+4/mw==}
+    dev: false
+
+  /@glimmer/global-context@0.87.1:
+    resolution: {integrity: sha512-Mitr7pBeVDTplFWlohyzxWLpFll7ffMZN+fnkBmUj8HiDLbD790Lb8lR9B2nL3t4RGnh6W9kDkCnZB+hvDm/eQ==}
+    dev: false
+
+  /@glimmer/interfaces@0.87.1:
+    resolution: {integrity: sha512-2lbwLY4Bt9i2SvwT4hhY0TgEYKhOMQBgYvRiraq2BYHwO8iLKh3lC8iO3d+rQ3VgDtQ9i/sP6HG848VNRyVHxA==}
+    dependencies:
+      '@simple-dom/interface': 1.4.0
+    dev: false
+
+  /@glimmer/manager@0.87.1:
+    resolution: {integrity: sha512-jEUZZQWcuxKg+Ri/A1HGURm9pBrx13JDHx1djYCnPo96yjtQFYxEG0VcwLq2EtAEpFrekwfO1b6m3JZiFqmtGg==}
+    dependencies:
+      '@glimmer/debug': 0.87.1
+      '@glimmer/destroyable': 0.87.1
+      '@glimmer/env': 0.1.7
+      '@glimmer/global-context': 0.87.1
+      '@glimmer/interfaces': 0.87.1
+      '@glimmer/reference': 0.87.1
+      '@glimmer/util': 0.87.1
+      '@glimmer/validator': 0.87.1
+      '@glimmer/vm': 0.87.1
+    dev: false
+
+  /@glimmer/reference@0.87.1:
+    resolution: {integrity: sha512-KJwKYDnds6amsmVB1YxmFhJGI/TNCNmsFBWKUH8K0odmiggUCjt3AwUoOKztkwh3xxy/jpq+5AahIuV+uBgW7A==}
+    dependencies:
+      '@glimmer/env': 0.1.7
+      '@glimmer/global-context': 0.87.1
+      '@glimmer/interfaces': 0.87.1
+      '@glimmer/util': 0.87.1
+      '@glimmer/validator': 0.87.1
+    dev: false
+
+  /@glimmer/util@0.87.1:
+    resolution: {integrity: sha512-Duxi2JutaIewfIWp8PJl7U5n12yasKWtZFHNLSrg+C8TKeMXdRyJtI7uqtqg0Z/6F9JwdJe/IPhTvdsTTfzAuA==}
+    dependencies:
+      '@glimmer/env': 0.1.7
+      '@glimmer/interfaces': 0.87.1
+    dev: false
+
+  /@glimmer/validator@0.87.1:
+    resolution: {integrity: sha512-GqzULgK9m2QPfPswhyV30tZmsUegowv9Tyfz2l15cLDFX9L5GcEORpzKXjR0TzCplffuqOC1g8rnMaPsP55apw==}
+    dependencies:
+      '@glimmer/env': 0.1.7
+      '@glimmer/global-context': 0.87.1
+      '@glimmer/interfaces': 0.87.1
+      '@glimmer/util': 0.87.1
+    dev: false
+
+  /@glimmer/vm@0.87.1:
+    resolution: {integrity: sha512-JSFr85ASZmuN4H72px7GHtnW79PPRHpqHw6O/6UUZd+ocwWHy+nG9JGbo8kntvqN5xP0SdCipjv/c0u7nkc8tg==}
+    dependencies:
+      '@glimmer/interfaces': 0.87.1
+      '@glimmer/util': 0.87.1
+    dev: false
+
+  /@simple-dom/interface@1.4.0:
+    resolution: {integrity: sha512-l5qumKFWU0S+4ZzMaLXFU8tQZsicHEMEyAxI5kDFGhJsRqDwe0a7/iPA/GdxlGyDKseQQAgIz5kzU7eXTrlSpA==}
+    dev: false
+
+  /typescript@5.4.0-dev.20240109:
+    resolution: {integrity: sha512-pKDkvh+RizbUm4BEmfvmG74qycZsHw4oFB6jY9D+oKoxPzoZr/edCTks/t50kvU2RdiDn0UKSzZB4YVzrC9WTQ==}
+    engines: {node: '>=14.17'}
+    hasBin: true
+    dev: true
diff --git a/src/index.ts b/src/index.ts
new file mode 100644
index 0000000..a982243
--- /dev/null
+++ b/src/index.ts
@@ -0,0 +1,4 @@
+import { getInternalComponentManager } from "@glimmer/manager";
+
+class Helper {}
+export const Foo = getInternalComponentManager(Helper);
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..8264cf5
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,13 @@
+{
+  "compilerOptions": {
+    "target": "es2022", /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
+    "moduleResolution": "node", /* Specify how TypeScript looks up a file from a given module specifier. */
+    "declaration": true, /* Generate .d.ts files from TypeScript and JavaScript files in your project. */
+    "emitDeclarationOnly": true, /* Only output d.ts files and not JavaScript files. */
+    "outDir": "./dist", /* Specify an output folder for all emitted files. */
+    "esModuleInterop": true, /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
+    "forceConsistentCasingInFileNames": true, /* Ensure that casing is correct in imports. */
+    "strict": true, /* Enable all strict type-checking options. */
+    "skipLibCheck": true /* Skip type checking all .d.ts files. */
+  }
+}
\ No newline at end of file