Bug: Post-install script fails in VS Code Dev Container, subpath exports not created

[Delta161]

Steps to reproduce

Environment:

OS: Standard VS Code Dev Container (Debian base)

Node.js version: 20.x

firebase-functions version: 5.0.1 and latest

Related issues

[REQUIRED] Version info

node:
v20.19.2

firebase-functions:
firebase-functions version: 5.0.1 and latest

firebase-tools:

firebase-admin:

[REQUIRED] Test case

When running npm install or yarn on the firebase-functions package (v5.x or latest) inside a standard VS Code Dev Container, the installation completes but the necessary proxy files for subpath imports (e.g., auth.d.ts, https.d.ts) are not created in the package's root. This leads to compile-time errors (TS2307: Cannot find module 'firebase-functions/auth') and runtime errors (ERR_PACKAGE_PATH_NOT_EXPORTED).

[REQUIRED] Steps to reproduce

Create a new project in a VS Code Dev Container using the official "Node.js & TypeScript" definition (using Node 20).

Create a functions directory.

Inside functions, create a package.json with the following content:

JSON

{
"name": "functions",
"main": "lib/index.js",
"engines": { "node": "20" },
"dependencies": {
"firebase-admin": "latest",
"firebase-functions": "latest"
},
"devDependencies": {
"typescript": "latest"
}
}
Run npm install (or yarn).

Run ls -l node_modules/firebase-functions/auth.d.ts.

[REQUIRED] Expected behavior

The ls command should show the file auth.d.ts.

[REQUIRED] Actual behavior

The ls command fails with No such file or directory

Were you able to successfully deploy your functions?

[google-oss-bot]

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.

[HassanBahati]

Hi @Delta161 , thank you for reporting this issue. We will review it and provide feedback on any developments.