Changes in version 2.0.1                        

CRAN resubmission

  - Audited remaining examples: enabled local examples, guarded browser
    launching, demonstrated the Dynamic Links shutdown with try(), and
    added temporary-file cleanup to file-writing examples and legacy S4
    downloads.
  - Required 'testthat' 3.2.0 or later for the mocking helpers used by
    the tests.
  - Revised the title and description, quoted service and package names,
    and added the Firebase web service URL.
  - Guarded interactive setup, Google sign-in, and Shiny examples with
    if (interactive()) and corrected Shiny example namespaces.
  - Replaced legacy progress printing with suppressible messages and
    disabled download progress bars. firebase_config_show() now returns
    its masked list without printing; use print() to display it
    explicitly.
  - Made the configuration wizard session-only by default. Saving now
    requires save = TRUE and an explicit output path; it never creates a
    home directory.
  - Used temporary paths for example downloads and backups, disabled
    implicit legacy OAuth disk caching, and rendered legacy R Markdown
    deployments in a temporary directory that is removed after upload.

Compatibility and release maintenance

  - Updated the maintainer email and added the maintainer ORCID.
  - Updated deprecated authentication wrappers to use the current
    Identity Toolkit v1 REST endpoints instead of the obsolete v3
    endpoints.
  - Updated the inferred Cloud Storage bucket for newly created Firebase
    projects to the current PROJECT_ID.firebasestorage.app format.
    Legacy projects can pass their existing PROJECT_ID.appspot.com
    bucket explicitly.
  - Made Cloud Storage uploads compatible with uniform bucket-level
    access by applying object ACLs only when explicitly requested, and
    cached service-account access tokens separately for each OAuth scope
    set.
  - Documented Realtime Database regional URLs and the package's
    supported Firebase feature scope.
  - Marked Firebase Dynamic Links helpers as unavailable following the
    service's shutdown on August 25, 2025.
  - Removed stale CRAN availability claims, broken external artwork,
    temporary repository files, and unused suggested dependencies.

                        Changes in version 2.0.0                        

Breaking Changes

  - Minimum R version increased to 4.1.0
  - Function naming convention changed to snake_case (old camelCase
    functions deprecated)
  - Connection object pattern introduced - most functions now accept a
    conn parameter

New Features

Architecture

  - Modular design: Package split from single 792-line file into 15
    focused modules
  - Connection objects: New firebase_connect() creates reusable
    connection with configuration
  - Configuration management: Support for environment variables, config
    files, and interactive setup
  - Custom error classes: Firebase-specific error types with detailed
    messages
  - Service account support: Full support for server-side authentication
    via service accounts

Authentication

  - auth_sign_in() - Sign in with email/password (replaces auth())
  - auth_anonymous() - Anonymous sign in (replaces anonymous_login())
  - auth_create_user() - Create new user (replaces createUser())
  - auth_reset_password() - Send password reset email (replaces
    resetPassword())
  - auth_google() - Google OAuth sign in (replaces google_login())
  - auth_refresh_token() - Refresh expired tokens (NEW)
  - auth_get_user() - Get current user info (NEW)
  - auth_update_profile() - Update user profile (NEW)
  - auth_delete_user() - Delete user account (NEW)

Realtime Database

  - rtdb_get() - Read data (replaces download())
  - rtdb_set() - Write/overwrite data (replaces put())
  - rtdb_push() - Add data with auto-key (replaces upload())
  - rtdb_update() - Partial update (replaces patch())
  - rtdb_delete() - Delete data (replaces delete())
  - rtdb_backup() - Full database backup (replaces dataBackup())
  - rtdb_query() - Query builder with filtering/sorting (NEW)

Cloud Firestore (NEW)

  - firestore_get() - Get a document from a collection
  - firestore_set() - Create/overwrite a document
  - firestore_add() - Add document with auto-generated ID
  - firestore_update() - Update specific fields in a document
  - firestore_delete() - Delete a document
  - firestore_list() - List documents in a collection with pagination
  - firestore_query() - Query builder for complex queries
  - Query helpers: fs_where(), fs_order_by(), fs_limit(), fs_offset(),
    fs_select(), fs_execute()
  - Support for common Firestore data types (strings, numbers, booleans,
    timestamps, arrays, maps)

Cloud Storage

  - storage_upload() - Upload files (replaces upload_storage())
  - storage_download() - Download files (NEW)
  - storage_delete() - Delete files (replaces delete_storage())
  - storage_list() - List files (replaces list_storage())
  - storage_get_metadata() - Get file metadata (replaces get_storage())
  - storage_get_url() - Get download URL (replaces get_url())
  - storage_upload_folder() - Upload folder (replaces upload_folder())

Dynamic Links

  - dynlink_create() - Create short links (replaces get_dynamic_link())
  - Legacy Dynamic Links helpers are retained for compatibility.
    Firebase Dynamic Links shut down on August 25, 2025, so these
    helpers no longer make API requests.

Configuration

  - firebase_connect() - Create connection object (NEW)
  - firebase_config_set() - Set session configuration (NEW)
  - firebase_config_get() - Get configuration value (NEW)
  - firebase_config_load() - Load from YAML file (NEW)
  - firebase_config_wizard() - Interactive setup (NEW)

Utilities

  - path_sanitize() - Clean Firebase paths (replaces path_check())
  - FirebaseToken - R6 class for token management with auto-refresh
    (NEW)
  - ServiceAccountCredentials - R6 class for service account auth (NEW)

Deprecated Functions

The following functions are deprecated but still work. They will show
deprecation warnings:

| Deprecated | Use Instead | |------------|-------------| | auth() |
auth_sign_in() | | anonymous_login() | auth_anonymous() | | createUser()
| auth_create_user() | | resetPassword() | auth_reset_password() | |
google_login() | auth_google() | | upload() | rtdb_push() | | download()
| rtdb_get() | | put() | rtdb_set() | | patch() | rtdb_update() | |
delete() | rtdb_delete() | | dataBackup() | rtdb_backup() | |
upload_storage() | storage_upload() | | delete_storage() |
storage_delete() | | list_storage() | storage_list() | | get_storage() |
storage_get_metadata() | | get_url() | storage_get_url() | |
upload_folder() | storage_upload_folder() | | get_dynamic_link() |
dynlink_create() | | path_check() | path_sanitize() |

Infrastructure

  - CI migrated from Travis CI to GitHub Actions
  - Test credentials removed from source code (now via environment
    variables)
  - Added test helpers for safe credential handling
  - Code coverage reporting via Codecov

Dependencies

Added

  - R6 (>= 2.5.0) - For token and credential classes
  - openssl (>= 2.0.0) - For JWT signing
  - yaml (>= 2.3.0) - For config file support

Updated

  - httr (>= 1.4.0)
  - jsonlite (>= 1.8.0)
  - curl (>= 5.0.0)

Removed

  - Removed hardcoded test credentials
  - Removed deprecated .travis.yml

                        Changes in version 1.16                         

  - Last release of v1.x series
  - See GitHub releases for historical changes