firebase 12.x

Use Firebase JS SDK ^12.0.0 with the modular API, correct v12 imports, and Node 20-compatible tooling. Covers app initialization, Auth and Firestore entry points, Firestore Lite query construction, compat migration traps, and v12 naming changes.

For

firebase@12.18.0

Verified

2026-09-08, 2 examples executed

Package

@modootoday/pmcp-firebase@12.0.0

What it covers

• Prefer modular imports
• App lifecycle
• Authentication
• Cloud Firestore
• Firestore Lite
• v12 naming changes
• Compat and migration pitfalls
• Environment notes
• Not covered

One example from this skill

This is the skill's own text, not a summary of it. It runs: that is what verifying means here.

import assert from 'node:assert/strict';
import { initializeApp, getApp, getApps, deleteApp } from 'firebase/app';

const app = initializeApp({
  apiKey: 'test-api-key',
  authDomain: 'example.firebaseapp.com',
  projectId: 'example-project'
}, 'skill-example');

assert.equal(getApp('skill-example'), app);
assert.equal(getApps().includes(app), true);

await deleteApp(app);
assert.equal(getApps().some(candidate => candidate === app), false);

What it did in the sandbox

Verifying this skill meant installing the package and running code against it with no route out. Nothing was observed. The full ledger lists every package examined, including the ones that never became a skill.

Nothing observed is not a finding of safety. It means one run, under one policy, produced nothing to report.

Getting it

With a subscription:

npx -y @modootoday/pmcp login
npx -y @modootoday/pmcp install @modootoday/pmcp-firebase

It installs as a dev dependency of your project, and the MCP server finds it there like any other skill.