alter-firestore

A CLI tool for managing Firestore schema migrations and data alterations using TypeScript files. v2.1.8 requires Node.js >=21.0.0 and is Pure ESM (package.json must have type:module). Supports migration up/down, rollback, refresh, and custom alter scripts. Runs against Firestore emulator or production projects via Firebase Admin SDK. Ships TypeScript definitions. The tool exports ActionArg types for migration/alter functions.