Remote Config realtime for Web #9199

Samruddhi90 · 2025-08-11T07:28:31Z

This PR contains the logic for adding a new API, onConfigUpdate, for making a Realtime Connection and implementing backoff logic in case of errors. Making a connection and going into backoff is working as expected.

In follow-up PRs, we will add logic for handling tab visibility (foreground/background) to either make or close a connection based on activity, implement AutoFetch logic, and add unit tests.

…Logic

changeset-bot · 2025-08-11T07:28:34Z

⚠️ No Changeset found

Latest commit: 8f92245

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google-oss-bot · 2025-08-11T07:38:45Z

Size Report ¹

Affected Products

@firebase/remote-config
Type Base (e25317f) Merge (7618f2a) Diff
browser 22.7 kB 32.3 kB +9.60 kB (+42.2%)
main 23.9 kB 33.6 kB +9.70 kB (+40.7%)
module 22.7 kB 32.3 kB +9.60 kB (+42.2%)
bundle
Type Base (e25317f) Merge (7618f2a) Diff
remote-config (getAndFetch) 47.8 kB 54.9 kB +7.14 kB (+14.9%)

`firebase`

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
firebase-compat.js	800 kB	806 kB	+6.41 kB (+0.8%)
firebase-remote-config-compat.js	27.9 kB	34.6 kB	+6.64 kB (+23.8%)
firebase-remote-config.js	32.2 kB	39.2 kB	+6.99 kB (+21.7%)

Test Logs

https://storage.googleapis.com/firebase-sdk-metric-reports/FwlVhwkJDb.html

google-oss-bot · 2025-08-11T07:50:55Z

Size Analysis Report ¹

Affected Products

`@firebase/remote-config`

`activate`

Size

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
size	12.1 kB	19.0 kB	+6.89 kB (+57.0%)
size-with-ext-deps	38.3 kB	45.5 kB	+7.14 kB (+18.6%)

Dependency

Type Base (e25317f) Merge (7618f2a) Diff

classes

CachingClient
InMemoryStorage
IndexedDbStorage
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache

11 dependencies

CachingClient
EventEmitter
InMemoryStorage
IndexedDbStorage
RealtimeHandler
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
VisibilityMonitor

+ EventEmitter
+ RealtimeHandler
+ VisibilityMonitor

variables

11 dependencies

APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

16 dependencies

API_KEY_HEADER
APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
INSTALLATIONS_AUTH_TOKEN_HEADER
NO_BACKOFF_TIME_IN_MILLIS
NO_FAILED_REALTIME_STREAMS
ORIGINAL_RETRIES
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

+ API_KEY_HEADER
+ INSTALLATIONS_AUTH_TOKEN_HEADER
+ NO_BACKOFF_TIME_IN_MILLIS
+ NO_FAILED_REALTIME_STREAMS
+ ORIGINAL_RETRIES

External Dependency

Module	Base (`e25317f`)	Merge (`7618f2a`)	Diff
`@firebase/util`	ErrorFactory FirebaseError calculateBackoffMillis getModularInstance isIndexedDBAvailable	ErrorFactory FirebaseError assert calculateBackoffMillis getModularInstance isIndexedDBAvailable	+ assert

`ensureInitialized`

Size

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
size	11.8 kB	18.7 kB	+6.89 kB (+58.5%)
size-with-ext-deps	38.0 kB	45.2 kB	+7.14 kB (+18.8%)

Dependency

Type Base (e25317f) Merge (7618f2a) Diff

classes

CachingClient
InMemoryStorage
IndexedDbStorage
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache

11 dependencies

CachingClient
EventEmitter
InMemoryStorage
IndexedDbStorage
RealtimeHandler
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
VisibilityMonitor

+ EventEmitter
+ RealtimeHandler
+ VisibilityMonitor

variables

11 dependencies

APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

16 dependencies

API_KEY_HEADER
APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
INSTALLATIONS_AUTH_TOKEN_HEADER
NO_BACKOFF_TIME_IN_MILLIS
NO_FAILED_REALTIME_STREAMS
ORIGINAL_RETRIES
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

+ API_KEY_HEADER
+ INSTALLATIONS_AUTH_TOKEN_HEADER
+ NO_BACKOFF_TIME_IN_MILLIS
+ NO_FAILED_REALTIME_STREAMS
+ ORIGINAL_RETRIES

External Dependency

Module	Base (`e25317f`)	Merge (`7618f2a`)	Diff
`@firebase/util`	ErrorFactory FirebaseError calculateBackoffMillis getModularInstance isIndexedDBAvailable	ErrorFactory FirebaseError assert calculateBackoffMillis getModularInstance isIndexedDBAvailable	+ assert

`fetchAndActivate`

Size

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
size	12.8 kB	19.7 kB	+6.89 kB (+53.6%)
size-with-ext-deps	39.1 kB	46.2 kB	+7.14 kB (+18.3%)

Dependency

Type Base (e25317f) Merge (7618f2a) Diff

classes

CachingClient
InMemoryStorage
IndexedDbStorage
RemoteConfig
RemoteConfigAbortSignal
RestClient
RetryingClient
Storage
StorageCache

12 dependencies

CachingClient
EventEmitter
InMemoryStorage
IndexedDbStorage
RealtimeHandler
RemoteConfig
RemoteConfigAbortSignal
RestClient
RetryingClient
Storage
StorageCache
VisibilityMonitor

+ EventEmitter
+ RealtimeHandler
+ VisibilityMonitor

variables

11 dependencies

APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

16 dependencies

API_KEY_HEADER
APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
INSTALLATIONS_AUTH_TOKEN_HEADER
NO_BACKOFF_TIME_IN_MILLIS
NO_FAILED_REALTIME_STREAMS
ORIGINAL_RETRIES
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

+ API_KEY_HEADER
+ INSTALLATIONS_AUTH_TOKEN_HEADER
+ NO_BACKOFF_TIME_IN_MILLIS
+ NO_FAILED_REALTIME_STREAMS
+ ORIGINAL_RETRIES

External Dependency

Module	Base (`e25317f`)	Merge (`7618f2a`)	Diff
`@firebase/util`	ErrorFactory FirebaseError calculateBackoffMillis getModularInstance isIndexedDBAvailable	ErrorFactory FirebaseError assert calculateBackoffMillis getModularInstance isIndexedDBAvailable	+ assert

`fetchConfig`

Size

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
size	12.5 kB	19.4 kB	+6.89 kB (+55.2%)
size-with-ext-deps	38.7 kB	45.9 kB	+7.14 kB (+18.5%)

Dependency

Type Base (e25317f) Merge (7618f2a) Diff

classes

CachingClient
InMemoryStorage
IndexedDbStorage
RemoteConfig
RemoteConfigAbortSignal
RestClient
RetryingClient
Storage
StorageCache

12 dependencies

CachingClient
EventEmitter
InMemoryStorage
IndexedDbStorage
RealtimeHandler
RemoteConfig
RemoteConfigAbortSignal
RestClient
RetryingClient
Storage
StorageCache
VisibilityMonitor

+ EventEmitter
+ RealtimeHandler
+ VisibilityMonitor

variables

11 dependencies

APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

16 dependencies

API_KEY_HEADER
APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
INSTALLATIONS_AUTH_TOKEN_HEADER
NO_BACKOFF_TIME_IN_MILLIS
NO_FAILED_REALTIME_STREAMS
ORIGINAL_RETRIES
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

+ API_KEY_HEADER
+ INSTALLATIONS_AUTH_TOKEN_HEADER
+ NO_BACKOFF_TIME_IN_MILLIS
+ NO_FAILED_REALTIME_STREAMS
+ ORIGINAL_RETRIES

External Dependency

Module	Base (`e25317f`)	Merge (`7618f2a`)	Diff
`@firebase/util`	ErrorFactory FirebaseError calculateBackoffMillis getModularInstance isIndexedDBAvailable	ErrorFactory FirebaseError assert calculateBackoffMillis getModularInstance isIndexedDBAvailable	+ assert

`getAll`

Size

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
size	12.9 kB	19.8 kB	+6.89 kB (+53.3%)
size-with-ext-deps	39.2 kB	46.3 kB	+7.14 kB (+18.2%)

Dependency

Type Base (e25317f) Merge (7618f2a) Diff

classes

CachingClient
InMemoryStorage
IndexedDbStorage
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
Value

12 dependencies

CachingClient
EventEmitter
InMemoryStorage
IndexedDbStorage
RealtimeHandler
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
Value
VisibilityMonitor

+ EventEmitter
+ RealtimeHandler
+ VisibilityMonitor

variables

15 dependencies

APP_NAMESPACE_STORE
BOOLEAN_TRUTHY_VALUES
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
DEFAULT_VALUE_FOR_BOOLEAN
DEFAULT_VALUE_FOR_NUMBER
DEFAULT_VALUE_FOR_STRING
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

20 dependencies

API_KEY_HEADER
APP_NAMESPACE_STORE
BOOLEAN_TRUTHY_VALUES
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
DEFAULT_VALUE_FOR_BOOLEAN
DEFAULT_VALUE_FOR_NUMBER
DEFAULT_VALUE_FOR_STRING
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
INSTALLATIONS_AUTH_TOKEN_HEADER
NO_BACKOFF_TIME_IN_MILLIS
NO_FAILED_REALTIME_STREAMS
ORIGINAL_RETRIES
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

+ API_KEY_HEADER
+ INSTALLATIONS_AUTH_TOKEN_HEADER
+ NO_BACKOFF_TIME_IN_MILLIS
+ NO_FAILED_REALTIME_STREAMS
+ ORIGINAL_RETRIES

External Dependency

Module	Base (`e25317f`)	Merge (`7618f2a`)	Diff
`@firebase/util`	ErrorFactory FirebaseError calculateBackoffMillis getModularInstance isIndexedDBAvailable	ErrorFactory FirebaseError assert calculateBackoffMillis getModularInstance isIndexedDBAvailable	+ assert

`getBoolean`

Size

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
size	12.8 kB	19.7 kB	+6.89 kB (+53.8%)
size-with-ext-deps	39.0 kB	46.2 kB	+7.14 kB (+18.3%)

Dependency

Type Base (e25317f) Merge (7618f2a) Diff

classes

CachingClient
InMemoryStorage
IndexedDbStorage
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
Value

12 dependencies

CachingClient
EventEmitter
InMemoryStorage
IndexedDbStorage
RealtimeHandler
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
Value
VisibilityMonitor

+ EventEmitter
+ RealtimeHandler
+ VisibilityMonitor

variables

15 dependencies

APP_NAMESPACE_STORE
BOOLEAN_TRUTHY_VALUES
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
DEFAULT_VALUE_FOR_BOOLEAN
DEFAULT_VALUE_FOR_NUMBER
DEFAULT_VALUE_FOR_STRING
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

20 dependencies

API_KEY_HEADER
APP_NAMESPACE_STORE
BOOLEAN_TRUTHY_VALUES
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
DEFAULT_VALUE_FOR_BOOLEAN
DEFAULT_VALUE_FOR_NUMBER
DEFAULT_VALUE_FOR_STRING
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
INSTALLATIONS_AUTH_TOKEN_HEADER
NO_BACKOFF_TIME_IN_MILLIS
NO_FAILED_REALTIME_STREAMS
ORIGINAL_RETRIES
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

+ API_KEY_HEADER
+ INSTALLATIONS_AUTH_TOKEN_HEADER
+ NO_BACKOFF_TIME_IN_MILLIS
+ NO_FAILED_REALTIME_STREAMS
+ ORIGINAL_RETRIES

External Dependency

Module	Base (`e25317f`)	Merge (`7618f2a`)	Diff
`@firebase/util`	ErrorFactory FirebaseError calculateBackoffMillis getModularInstance isIndexedDBAvailable	ErrorFactory FirebaseError assert calculateBackoffMillis getModularInstance isIndexedDBAvailable	+ assert

`getNumber`

Size

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
size	12.8 kB	19.7 kB	+6.89 kB (+53.8%)
size-with-ext-deps	39.0 kB	46.2 kB	+7.14 kB (+18.3%)

Dependency

Type Base (e25317f) Merge (7618f2a) Diff

classes

CachingClient
InMemoryStorage
IndexedDbStorage
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
Value

12 dependencies

CachingClient
EventEmitter
InMemoryStorage
IndexedDbStorage
RealtimeHandler
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
Value
VisibilityMonitor

+ EventEmitter
+ RealtimeHandler
+ VisibilityMonitor

variables

15 dependencies

APP_NAMESPACE_STORE
BOOLEAN_TRUTHY_VALUES
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
DEFAULT_VALUE_FOR_BOOLEAN
DEFAULT_VALUE_FOR_NUMBER
DEFAULT_VALUE_FOR_STRING
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

20 dependencies

API_KEY_HEADER
APP_NAMESPACE_STORE
BOOLEAN_TRUTHY_VALUES
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
DEFAULT_VALUE_FOR_BOOLEAN
DEFAULT_VALUE_FOR_NUMBER
DEFAULT_VALUE_FOR_STRING
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
INSTALLATIONS_AUTH_TOKEN_HEADER
NO_BACKOFF_TIME_IN_MILLIS
NO_FAILED_REALTIME_STREAMS
ORIGINAL_RETRIES
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

+ API_KEY_HEADER
+ INSTALLATIONS_AUTH_TOKEN_HEADER
+ NO_BACKOFF_TIME_IN_MILLIS
+ NO_FAILED_REALTIME_STREAMS
+ ORIGINAL_RETRIES

External Dependency

Module	Base (`e25317f`)	Merge (`7618f2a`)	Diff
`@firebase/util`	ErrorFactory FirebaseError calculateBackoffMillis getModularInstance isIndexedDBAvailable	ErrorFactory FirebaseError assert calculateBackoffMillis getModularInstance isIndexedDBAvailable	+ assert

`getRemoteConfig`

Size

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
size	12.5 kB	19.4 kB	+6.89 kB (+55.3%)
size-with-ext-deps	45.6 kB	52.7 kB	+7.14 kB (+15.6%)

Dependency

Type Base (e25317f) Merge (7618f2a) Diff

classes

CachingClient
InMemoryStorage
IndexedDbStorage
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache

11 dependencies

CachingClient
EventEmitter
InMemoryStorage
IndexedDbStorage
RealtimeHandler
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
VisibilityMonitor

+ EventEmitter
+ RealtimeHandler
+ VisibilityMonitor

variables

11 dependencies

APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

16 dependencies

API_KEY_HEADER
APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
INSTALLATIONS_AUTH_TOKEN_HEADER
NO_BACKOFF_TIME_IN_MILLIS
NO_FAILED_REALTIME_STREAMS
ORIGINAL_RETRIES
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

+ API_KEY_HEADER
+ INSTALLATIONS_AUTH_TOKEN_HEADER
+ NO_BACKOFF_TIME_IN_MILLIS
+ NO_FAILED_REALTIME_STREAMS
+ ORIGINAL_RETRIES

External Dependency

Module Base (e25317f) Merge (7618f2a) Diff

@firebase/util

ErrorFactory
FirebaseError
calculateBackoffMillis
deepEqual
getModularInstance
isIndexedDBAvailable

ErrorFactory
FirebaseError
assert
calculateBackoffMillis
deepEqual
getModularInstance
isIndexedDBAvailable

+ assert

`getString`

Size

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
size	12.8 kB	19.7 kB	+6.89 kB (+53.8%)
size-with-ext-deps	39.0 kB	46.2 kB	+7.14 kB (+18.3%)

Dependency

Type Base (e25317f) Merge (7618f2a) Diff

classes

CachingClient
InMemoryStorage
IndexedDbStorage
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
Value

12 dependencies

CachingClient
EventEmitter
InMemoryStorage
IndexedDbStorage
RealtimeHandler
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
Value
VisibilityMonitor

+ EventEmitter
+ RealtimeHandler
+ VisibilityMonitor

variables

15 dependencies

APP_NAMESPACE_STORE
BOOLEAN_TRUTHY_VALUES
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
DEFAULT_VALUE_FOR_BOOLEAN
DEFAULT_VALUE_FOR_NUMBER
DEFAULT_VALUE_FOR_STRING
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

20 dependencies

API_KEY_HEADER
APP_NAMESPACE_STORE
BOOLEAN_TRUTHY_VALUES
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
DEFAULT_VALUE_FOR_BOOLEAN
DEFAULT_VALUE_FOR_NUMBER
DEFAULT_VALUE_FOR_STRING
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
INSTALLATIONS_AUTH_TOKEN_HEADER
NO_BACKOFF_TIME_IN_MILLIS
NO_FAILED_REALTIME_STREAMS
ORIGINAL_RETRIES
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

+ API_KEY_HEADER
+ INSTALLATIONS_AUTH_TOKEN_HEADER
+ NO_BACKOFF_TIME_IN_MILLIS
+ NO_FAILED_REALTIME_STREAMS
+ ORIGINAL_RETRIES

External Dependency

Module	Base (`e25317f`)	Merge (`7618f2a`)	Diff
`@firebase/util`	ErrorFactory FirebaseError calculateBackoffMillis getModularInstance isIndexedDBAvailable	ErrorFactory FirebaseError assert calculateBackoffMillis getModularInstance isIndexedDBAvailable	+ assert

`getValue`

Size

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
size	12.8 kB	19.6 kB	+6.89 kB (+54.0%)
size-with-ext-deps	39.0 kB	46.1 kB	+7.14 kB (+18.3%)

Dependency

Type Base (e25317f) Merge (7618f2a) Diff

classes

CachingClient
InMemoryStorage
IndexedDbStorage
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
Value

12 dependencies

CachingClient
EventEmitter
InMemoryStorage
IndexedDbStorage
RealtimeHandler
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
Value
VisibilityMonitor

+ EventEmitter
+ RealtimeHandler
+ VisibilityMonitor

variables

15 dependencies

APP_NAMESPACE_STORE
BOOLEAN_TRUTHY_VALUES
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
DEFAULT_VALUE_FOR_BOOLEAN
DEFAULT_VALUE_FOR_NUMBER
DEFAULT_VALUE_FOR_STRING
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

20 dependencies

API_KEY_HEADER
APP_NAMESPACE_STORE
BOOLEAN_TRUTHY_VALUES
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
DEFAULT_VALUE_FOR_BOOLEAN
DEFAULT_VALUE_FOR_NUMBER
DEFAULT_VALUE_FOR_STRING
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
INSTALLATIONS_AUTH_TOKEN_HEADER
NO_BACKOFF_TIME_IN_MILLIS
NO_FAILED_REALTIME_STREAMS
ORIGINAL_RETRIES
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

+ API_KEY_HEADER
+ INSTALLATIONS_AUTH_TOKEN_HEADER
+ NO_BACKOFF_TIME_IN_MILLIS
+ NO_FAILED_REALTIME_STREAMS
+ ORIGINAL_RETRIES

External Dependency

Module	Base (`e25317f`)	Merge (`7618f2a`)	Diff
`@firebase/util`	ErrorFactory FirebaseError calculateBackoffMillis getModularInstance isIndexedDBAvailable	ErrorFactory FirebaseError assert calculateBackoffMillis getModularInstance isIndexedDBAvailable	+ assert

`isSupported`

Size

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
size	11.9 kB	18.8 kB	+6.89 kB (+57.9%)
size-with-ext-deps	38.1 kB	45.2 kB	+7.14 kB (+18.8%)

Dependency

Type Base (e25317f) Merge (7618f2a) Diff

classes

CachingClient
InMemoryStorage
IndexedDbStorage
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache

11 dependencies

CachingClient
EventEmitter
InMemoryStorage
IndexedDbStorage
RealtimeHandler
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
VisibilityMonitor

+ EventEmitter
+ RealtimeHandler
+ VisibilityMonitor

variables

11 dependencies

APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

16 dependencies

API_KEY_HEADER
APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
INSTALLATIONS_AUTH_TOKEN_HEADER
NO_BACKOFF_TIME_IN_MILLIS
NO_FAILED_REALTIME_STREAMS
ORIGINAL_RETRIES
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

+ API_KEY_HEADER
+ INSTALLATIONS_AUTH_TOKEN_HEADER
+ NO_BACKOFF_TIME_IN_MILLIS
+ NO_FAILED_REALTIME_STREAMS
+ ORIGINAL_RETRIES

External Dependency

Module Base (e25317f) Merge (7618f2a) Diff

@firebase/util

ErrorFactory
FirebaseError
calculateBackoffMillis
getModularInstance
isIndexedDBAvailable
validateIndexedDBOpenable

ErrorFactory
FirebaseError
assert
calculateBackoffMillis
getModularInstance
isIndexedDBAvailable
validateIndexedDBOpenable

+ assert

`onConfigUpdate`

Size

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
size	?	18.8 kB	? (?)
size-with-ext-deps	?	45.3 kB	? (?)

Dependency

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
functions	?	ensureInitialized getUserLanguage isRetriableError mergeCustomSignals onConfigUpdate openDatabase registerRemoteConfig setAbortableTimeout toFirebaseError	?
classes	?	11 dependencies CachingClient EventEmitter InMemoryStorage IndexedDbStorage RealtimeHandler RemoteConfig RestClient RetryingClient Storage StorageCache VisibilityMonitor	?
variables	?	16 dependencies API_KEY_HEADER APP_NAMESPACE_STORE DB_NAME DB_VERSION DEFAULT_CACHE_MAX_AGE_MILLIS DEFAULT_FETCH_TIMEOUT_MILLIS ERROR_DESCRIPTION_MAP ERROR_FACTORY INSTALLATIONS_AUTH_TOKEN_HEADER NO_BACKOFF_TIME_IN_MILLIS NO_FAILED_REALTIME_STREAMS ORIGINAL_RETRIES RC_COMPONENT_NAME RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS name version	?
enums	?		?

External Dependency

Module	Base (`e25317f`)	Merge (`7618f2a`)	Diff
`@firebase/app`	?	SDK_VERSION _registerComponent registerVersion	?
`@firebase/component`	?	Component	?
`@firebase/logger`	?	LogLevel Logger	?
`@firebase/util`	?	ErrorFactory FirebaseError assert calculateBackoffMillis getModularInstance isIndexedDBAvailable	?

`setCustomSignals`

Size

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
size	12.3 kB	19.2 kB	+6.89 kB (+56.1%)
size-with-ext-deps	38.5 kB	45.7 kB	+7.14 kB (+18.5%)

Dependency

Type Base (e25317f) Merge (7618f2a) Diff

classes

CachingClient
InMemoryStorage
IndexedDbStorage
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache

11 dependencies

CachingClient
EventEmitter
InMemoryStorage
IndexedDbStorage
RealtimeHandler
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
VisibilityMonitor

+ EventEmitter
+ RealtimeHandler
+ VisibilityMonitor

variables

13 dependencies

APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_KEY_MAX_LENGTH
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
RC_CUSTOM_SIGNAL_VALUE_MAX_LENGTH
name
version

18 dependencies

API_KEY_HEADER
APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
INSTALLATIONS_AUTH_TOKEN_HEADER
NO_BACKOFF_TIME_IN_MILLIS
NO_FAILED_REALTIME_STREAMS
ORIGINAL_RETRIES
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_KEY_MAX_LENGTH
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
RC_CUSTOM_SIGNAL_VALUE_MAX_LENGTH
name
version

+ API_KEY_HEADER
+ INSTALLATIONS_AUTH_TOKEN_HEADER
+ NO_BACKOFF_TIME_IN_MILLIS
+ NO_FAILED_REALTIME_STREAMS
+ ORIGINAL_RETRIES

External Dependency

Module	Base (`e25317f`)	Merge (`7618f2a`)	Diff
`@firebase/util`	ErrorFactory FirebaseError calculateBackoffMillis getModularInstance isIndexedDBAvailable	ErrorFactory FirebaseError assert calculateBackoffMillis getModularInstance isIndexedDBAvailable	+ assert

`setLogLevel`

Size

Type	Base (`e25317f`)	Merge (`7618f2a`)	Diff
size	11.9 kB	18.8 kB	+6.89 kB (+57.7%)
size-with-ext-deps	38.2 kB	45.3 kB	+7.14 kB (+18.7%)

Dependency

Type Base (e25317f) Merge (7618f2a) Diff

classes

CachingClient
InMemoryStorage
IndexedDbStorage
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache

11 dependencies

CachingClient
EventEmitter
InMemoryStorage
IndexedDbStorage
RealtimeHandler
RemoteConfig
RestClient
RetryingClient
Storage
StorageCache
VisibilityMonitor

+ EventEmitter
+ RealtimeHandler
+ VisibilityMonitor

variables

11 dependencies

APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

16 dependencies

API_KEY_HEADER
APP_NAMESPACE_STORE
DB_NAME
DB_VERSION
DEFAULT_CACHE_MAX_AGE_MILLIS
DEFAULT_FETCH_TIMEOUT_MILLIS
ERROR_DESCRIPTION_MAP
ERROR_FACTORY
INSTALLATIONS_AUTH_TOKEN_HEADER
NO_BACKOFF_TIME_IN_MILLIS
NO_FAILED_REALTIME_STREAMS
ORIGINAL_RETRIES
RC_COMPONENT_NAME
RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS
name
version

+ API_KEY_HEADER
+ INSTALLATIONS_AUTH_TOKEN_HEADER
+ NO_BACKOFF_TIME_IN_MILLIS
+ NO_FAILED_REALTIME_STREAMS
+ ORIGINAL_RETRIES

External Dependency

Module	Base (`e25317f`)	Merge (`7618f2a`)	Diff
`@firebase/util`	ErrorFactory FirebaseError calculateBackoffMillis getModularInstance isIndexedDBAvailable	ErrorFactory FirebaseError assert calculateBackoffMillis getModularInstance isIndexedDBAvailable	+ assert

Test Logs

https://storage.googleapis.com/firebase-sdk-metric-reports/BPucApsDZM.html

packages/remote-config/src/client/realtime_handler.ts

ashish-kothari

LGTM

dsjadaun-google

Do we plan add further tests for the realtime functionality?

packages/remote-config/src/client/realtime_handler.ts

Samruddhi90 · 2025-08-17T17:44:53Z

Do we plan add further tests for the realtime functionality?

Yes we will be adding the unit test cases for everything in the upcoming PR.

* Added the visibilityMonitor * minor changes * resolving the spacing problem

Samruddhi90 added 3 commits August 8, 2025 12:37

added the api-definition, interfaces, realtime connection and backoff…

22ba366

…Logic

Added TODO and comments

77bc5ef

resolved the comment about the spacing problem

c5d7dfb

Samruddhi90 force-pushed the realtime-backoff branch from 3a792c1 to 7653692 Compare August 11, 2025 09:56

Fix check failures

77a6aca

Samruddhi90 force-pushed the realtime-backoff branch from 7653692 to 77a6aca Compare August 11, 2025 10:22

hsubox76 reviewed Aug 11, 2025

View reviewed changes

packages/remote-config/src/client/realtime_handler.ts Outdated Show resolved Hide resolved

Fix yarn failures

0ff4893

Samruddhi90 mentioned this pull request Aug 12, 2025

Manage HTTP connections based on tab visibility #9202

Merged

Convert backoff time from seconds to minutes

61ba815

tusharkhandelwal8 requested review from ashish-kothari and dsjadaun-google August 12, 2025 13:18

ashish-kothari reviewed Aug 13, 2025

View reviewed changes

packages/remote-config/src/client/realtime_handler.ts Show resolved Hide resolved

ashish-kothari approved these changes Aug 13, 2025

View reviewed changes

dsjadaun-google approved these changes Aug 17, 2025

View reviewed changes

dsjadaun-google reviewed Aug 17, 2025

View reviewed changes

packages/remote-config/src/client/realtime_handler.ts Show resolved Hide resolved

Manage HTTP connections based on tab visibility (#9202)

8f92245

* Added the visibilityMonitor * minor changes * resolving the spacing problem

Samruddhi90 marked this pull request as ready for review August 18, 2025 10:57

Samruddhi90 requested review from a team and erikeldridge as code owners August 18, 2025 10:57

Samruddhi90 merged commit a1ccd9a into realtime-for-web Aug 18, 2025
34 checks passed

Samruddhi90 deleted the realtime-backoff branch August 18, 2025 10:58

Remote Config realtime for Web #9199

Remote Config realtime for Web #9199

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Samruddhi90 commented Aug 11, 2025

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Size Report 1

Affected Products

@firebase/remote-config

bundle

firebase

Test Logs

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Size Analysis Report 1

Affected Products

@firebase/remote-config

activate

ensureInitialized

fetchAndActivate

fetchConfig

getAll

getBoolean

getNumber

getRemoteConfig

getString

getValue

isSupported

onConfigUpdate

setCustomSignals

setLogLevel

Test Logs

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Samruddhi90 commented Aug 17, 2025

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edited

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Size Report ¹

`@firebase/remote-config`

`bundle`

`firebase`

google-oss-bot commented Aug 11, 2025 •

edited

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Size Analysis Report ¹

`@firebase/remote-config`

`activate`

`ensureInitialized`

`fetchAndActivate`

`fetchConfig`

`getAll`

`getBoolean`

`getNumber`

`getRemoteConfig`

`getString`

`getValue`

`isSupported`

`onConfigUpdate`

`setCustomSignals`

`setLogLevel`