| 1 |
- {"version":3,"file":"index.cjs.js","sources":["../src/util/constants.ts","../src/interfaces/internal-message-payload.ts","../src/helpers/array-base64-translator.ts","../src/helpers/migrate-old-database.ts","../src/internals/idb-manager.ts","../src/util/errors.ts","../src/internals/requests.ts","../src/internals/token-manager.ts","../src/helpers/externalizePayload.ts","../src/helpers/is-console-message.ts","../src/helpers/logToFirelog.ts","../src/helpers/extract-app-config.ts","../src/messaging-service.ts","../src/helpers/registerDefaultSw.ts","../src/helpers/updateSwReg.ts","../src/helpers/updateVapidKey.ts","../src/api/getToken.ts","../src/helpers/logToScion.ts","../src/listeners/window-listener.ts","../src/helpers/register.ts","../src/api/isSupported.ts","../src/api/deleteToken.ts","../src/api/onMessage.ts","../src/api.ts","../src/index.ts"],"sourcesContent":["/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nexport const DEFAULT_SW_PATH = '/firebase-messaging-sw.js';\nexport const DEFAULT_SW_SCOPE = '/firebase-cloud-messaging-push-scope';\n\nexport const DEFAULT_VAPID_KEY =\n 'BDOU99-h67HcA6JeFXHbSNMu7e2yNNu3RzoMj8TM4W88jITfq7ZmPvIM1Iv-4_l2LxQcYwhqby2xGpWwzjfAnG4';\n\nexport const ENDPOINT = 'https://fcmregistrations.googleapis.com/v1';\n\n/** Key of FCM Payload in Notification's data field. */\nexport const FCM_MSG = 'FCM_MSG';\n\nexport const CONSOLE_CAMPAIGN_ID = 'google.c.a.c_id';\nexport const CONSOLE_CAMPAIGN_NAME = 'google.c.a.c_l';\nexport const CONSOLE_CAMPAIGN_TIME = 'google.c.a.ts';\n/** Set to '1' if Analytics is enabled for the campaign */\nexport const CONSOLE_CAMPAIGN_ANALYTICS_ENABLED = 'google.c.a.e';\nexport const TAG = 'FirebaseMessaging: ';\nexport const MAX_NUMBER_OF_EVENTS_PER_LOG_REQUEST = 1000;\nexport const MAX_RETRIES = 3;\nexport const LOG_INTERVAL_IN_MS = 86400000; //24 hour\nexport const DEFAULT_BACKOFF_TIME_MS = 5000;\n\n// FCM log source name registered at Firelog: 'FCM_CLIENT_EVENT_LOGGING'. It uniquely identifies\n// FCM's logging configuration.\nexport const FCM_LOG_SOURCE = 1249;\n\n// Defined as in proto/messaging_event.proto. Neglecting fields that are supported.\nexport const SDK_PLATFORM_WEB = 3;\nexport const EVENT_MESSAGE_DELIVERED = 1;\n\nexport enum MessageType {\n DATA_MESSAGE = 1,\n DISPLAY_NOTIFICATION = 3\n}\n","/**\n * @license\n * Copyright 2018 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\"); you may not use this file except\n * in compliance with the License. You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software distributed under the License\n * is distributed on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express\n * or implied. See the License for the specific language governing permissions and limitations under\n * the License.\n */\n\nimport {\n CONSOLE_CAMPAIGN_ANALYTICS_ENABLED,\n CONSOLE_CAMPAIGN_ID,\n CONSOLE_CAMPAIGN_NAME,\n CONSOLE_CAMPAIGN_TIME\n} from '../util/constants';\n\nexport interface MessagePayloadInternal {\n notification?: NotificationPayloadInternal;\n data?: unknown;\n fcmOptions?: FcmOptionsInternal;\n messageType?: MessageType;\n isFirebaseMessaging?: boolean;\n from: string;\n fcmMessageId: string;\n // eslint-disable-next-line camelcase\n collapse_key: string;\n}\n\nexport interface NotificationPayloadInternal extends NotificationOptions {\n title: string;\n // Supported in the Legacy Send API.\n // See:https://firebase.google.com/docs/cloud-messaging/xmpp-server-ref.\n // eslint-disable-next-line camelcase\n click_action?: string;\n icon?: string;\n}\n\n// Defined in\n// https://firebase.google.com/docs/reference/fcm/rest/v1/projects.messages#webpushfcmoptions. Note\n// that the keys are sent to the clients in snake cases which we need to convert to camel so it can\n// be exposed as a type to match the Firebase API convention.\nexport interface FcmOptionsInternal {\n link?: string;\n\n // eslint-disable-next-line camelcase\n analytics_label?: string;\n}\n\nexport enum MessageType {\n PUSH_RECEIVED = 'push-received',\n NOTIFICATION_CLICKED = 'notification-clicked'\n}\n\n/** Additional data of a message sent from the FN Console. */\nexport interface ConsoleMessageData {\n [CONSOLE_CAMPAIGN_ID]: string;\n [CONSOLE_CAMPAIGN_TIME]: string;\n [CONSOLE_CAMPAIGN_NAME]?: string;\n [CONSOLE_CAMPAIGN_ANALYTICS_ENABLED]?: '1';\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nexport function arrayToBase64(array: Uint8Array | ArrayBuffer): string {\n const uint8Array = new Uint8Array(array);\n const base64String = btoa(String.fromCharCode(...uint8Array));\n return base64String.replace(/=/g, '').replace(/\\+/g, '-').replace(/\\//g, '_');\n}\n\nexport function base64ToArray(base64String: string): Uint8Array {\n const padding = '='.repeat((4 - (base64String.length % 4)) % 4);\n const base64 = (base64String + padding)\n .replace(/\\-/g, '+')\n .replace(/_/g, '/');\n\n const rawData = atob(base64);\n const outputArray = new Uint8Array(rawData.length);\n\n for (let i = 0; i < rawData.length; ++i) {\n outputArray[i] = rawData.charCodeAt(i);\n }\n return outputArray;\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { deleteDB, openDB } from 'idb';\n\nimport { TokenDetails } from '../interfaces/token-details';\nimport { arrayToBase64 } from './array-base64-translator';\n\n// https://github.com/firebase/firebase-js-sdk/blob/7857c212f944a2a9eb421fd4cb7370181bc034b5/packages/messaging/src/interfaces/token-details.ts\nexport interface V2TokenDetails {\n fcmToken: string;\n swScope: string;\n vapidKey: string | Uint8Array;\n subscription: PushSubscription;\n fcmSenderId: string;\n fcmPushSet: string;\n createTime?: number;\n endpoint?: string;\n auth?: string;\n p256dh?: string;\n}\n\n// https://github.com/firebase/firebase-js-sdk/blob/6b5b15ce4ea3df5df5df8a8b33a4e41e249c7715/packages/messaging/src/interfaces/token-details.ts\nexport interface V3TokenDetails {\n fcmToken: string;\n swScope: string;\n vapidKey: Uint8Array;\n fcmSenderId: string;\n fcmPushSet: string;\n endpoint: string;\n auth: ArrayBuffer;\n p256dh: ArrayBuffer;\n createTime: number;\n}\n\n// https://github.com/firebase/firebase-js-sdk/blob/9567dba664732f681fa7fe60f5b7032bb1daf4c9/packages/messaging/src/interfaces/token-details.ts\nexport interface V4TokenDetails {\n fcmToken: string;\n swScope: string;\n vapidKey: Uint8Array;\n fcmSenderId: string;\n endpoint: string;\n auth: ArrayBufferLike;\n p256dh: ArrayBufferLike;\n createTime: number;\n}\n\nconst OLD_DB_NAME = 'fcm_token_details_db';\n/**\n * The last DB version of 'fcm_token_details_db' was 4. This is one higher, so that the upgrade\n * callback is called for all versions of the old DB.\n */\nconst OLD_DB_VERSION = 5;\nconst OLD_OBJECT_STORE_NAME = 'fcm_token_object_Store';\n\nexport async function migrateOldDatabase(\n senderId: string\n): Promise<TokenDetails | null> {\n if ('databases' in indexedDB) {\n // indexedDb.databases() is an IndexedDB v3 API and does not exist in all browsers. TODO: Remove\n // typecast when it lands in TS types.\n const databases = await (\n indexedDB as {\n databases(): Promise<Array<{ name: string; version: number }>>;\n }\n ).databases();\n const dbNames = databases.map(db => db.name);\n\n if (!dbNames.includes(OLD_DB_NAME)) {\n // old DB didn't exist, no need to open.\n return null;\n }\n }\n\n let tokenDetails: TokenDetails | null = null;\n\n const db = await openDB(OLD_DB_NAME, OLD_DB_VERSION, {\n upgrade: async (db, oldVersion, newVersion, upgradeTransaction) => {\n if (oldVersion < 2) {\n // Database too old, skip migration.\n return;\n }\n\n if (!db.objectStoreNames.contains(OLD_OBJECT_STORE_NAME)) {\n // Database did not exist. Nothing to do.\n return;\n }\n\n const objectStore = upgradeTransaction.objectStore(OLD_OBJECT_STORE_NAME);\n const value = await objectStore.index('fcmSenderId').get(senderId);\n await objectStore.clear();\n\n if (!value) {\n // No entry in the database, nothing to migrate.\n return;\n }\n\n if (oldVersion === 2) {\n const oldDetails = value as V2TokenDetails;\n\n if (!oldDetails.auth || !oldDetails.p256dh || !oldDetails.endpoint) {\n return;\n }\n\n tokenDetails = {\n token: oldDetails.fcmToken,\n createTime: oldDetails.createTime ?? Date.now(),\n subscriptionOptions: {\n auth: oldDetails.auth,\n p256dh: oldDetails.p256dh,\n endpoint: oldDetails.endpoint,\n swScope: oldDetails.swScope,\n vapidKey:\n typeof oldDetails.vapidKey === 'string'\n ? oldDetails.vapidKey\n : arrayToBase64(oldDetails.vapidKey)\n }\n };\n } else if (oldVersion === 3) {\n const oldDetails = value as V3TokenDetails;\n\n tokenDetails = {\n token: oldDetails.fcmToken,\n createTime: oldDetails.createTime,\n subscriptionOptions: {\n auth: arrayToBase64(oldDetails.auth),\n p256dh: arrayToBase64(oldDetails.p256dh),\n endpoint: oldDetails.endpoint,\n swScope: oldDetails.swScope,\n vapidKey: arrayToBase64(oldDetails.vapidKey)\n }\n };\n } else if (oldVersion === 4) {\n const oldDetails = value as V4TokenDetails;\n\n tokenDetails = {\n token: oldDetails.fcmToken,\n createTime: oldDetails.createTime,\n subscriptionOptions: {\n auth: arrayToBase64(oldDetails.auth),\n p256dh: arrayToBase64(oldDetails.p256dh),\n endpoint: oldDetails.endpoint,\n swScope: oldDetails.swScope,\n vapidKey: arrayToBase64(oldDetails.vapidKey)\n }\n };\n }\n }\n });\n db.close();\n\n // Delete all old databases.\n await deleteDB(OLD_DB_NAME);\n await deleteDB('fcm_vapid_details_db');\n await deleteDB('undefined');\n\n return checkTokenDetails(tokenDetails) ? tokenDetails : null;\n}\n\nfunction checkTokenDetails(\n tokenDetails: TokenDetails | null\n): tokenDetails is TokenDetails {\n if (!tokenDetails || !tokenDetails.subscriptionOptions) {\n return false;\n }\n const { subscriptionOptions } = tokenDetails;\n return (\n typeof tokenDetails.createTime === 'number' &&\n tokenDetails.createTime > 0 &&\n typeof tokenDetails.token === 'string' &&\n tokenDetails.token.length > 0 &&\n typeof subscriptionOptions.auth === 'string' &&\n subscriptionOptions.auth.length > 0 &&\n typeof subscriptionOptions.p256dh === 'string' &&\n subscriptionOptions.p256dh.length > 0 &&\n typeof subscriptionOptions.endpoint === 'string' &&\n subscriptionOptions.endpoint.length > 0 &&\n typeof subscriptionOptions.swScope === 'string' &&\n subscriptionOptions.swScope.length > 0 &&\n typeof subscriptionOptions.vapidKey === 'string' &&\n subscriptionOptions.vapidKey.length > 0\n );\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { DBSchema, IDBPDatabase, deleteDB, openDB } from 'idb';\n\nimport { FirebaseInternalDependencies } from '../interfaces/internal-dependencies';\nimport { TokenDetails } from '../interfaces/token-details';\nimport { migrateOldDatabase } from '../helpers/migrate-old-database';\n\n// Exported for tests.\nexport const DATABASE_NAME = 'firebase-messaging-database';\nconst DATABASE_VERSION = 1;\nconst OBJECT_STORE_NAME = 'firebase-messaging-store';\n\ninterface MessagingDB extends DBSchema {\n 'firebase-messaging-store': {\n key: string;\n value: TokenDetails;\n };\n}\n\nlet dbPromise: Promise<IDBPDatabase<MessagingDB>> | null = null;\nfunction getDbPromise(): Promise<IDBPDatabase<MessagingDB>> {\n if (!dbPromise) {\n dbPromise = openDB(DATABASE_NAME, DATABASE_VERSION, {\n upgrade: (upgradeDb, oldVersion) => {\n // We don't use 'break' in this switch statement, the fall-through behavior is what we want,\n // because if there are multiple versions between the old version and the current version, we\n // want ALL the migrations that correspond to those versions to run, not only the last one.\n // eslint-disable-next-line default-case\n switch (oldVersion) {\n case 0:\n upgradeDb.createObjectStore(OBJECT_STORE_NAME);\n }\n }\n });\n }\n return dbPromise;\n}\n\n/** Gets record(s) from the objectStore that match the given key. */\nexport async function dbGet(\n firebaseDependencies: FirebaseInternalDependencies\n): Promise<TokenDetails | undefined> {\n const key = getKey(firebaseDependencies);\n const db = await getDbPromise();\n const tokenDetails = (await db\n .transaction(OBJECT_STORE_NAME)\n .objectStore(OBJECT_STORE_NAME)\n .get(key)) as TokenDetails;\n\n if (tokenDetails) {\n return tokenDetails;\n } else {\n // Check if there is a tokenDetails object in the old DB.\n const oldTokenDetails = await migrateOldDatabase(\n firebaseDependencies.appConfig.senderId\n );\n if (oldTokenDetails) {\n await dbSet(firebaseDependencies, oldTokenDetails);\n return oldTokenDetails;\n }\n }\n}\n\n/** Assigns or overwrites the record for the given key with the given value. */\nexport async function dbSet(\n firebaseDependencies: FirebaseInternalDependencies,\n tokenDetails: TokenDetails\n): Promise<TokenDetails> {\n const key = getKey(firebaseDependencies);\n const db = await getDbPromise();\n const tx = db.transaction(OBJECT_STORE_NAME, 'readwrite');\n await tx.objectStore(OBJECT_STORE_NAME).put(tokenDetails, key);\n await tx.done;\n return tokenDetails;\n}\n\n/** Removes record(s) from the objectStore that match the given key. */\nexport async function dbRemove(\n firebaseDependencies: FirebaseInternalDependencies\n): Promise<void> {\n const key = getKey(firebaseDependencies);\n const db = await getDbPromise();\n const tx = db.transaction(OBJECT_STORE_NAME, 'readwrite');\n await tx.objectStore(OBJECT_STORE_NAME).delete(key);\n await tx.done;\n}\n\n/** Deletes the DB. Useful for tests. */\nexport async function dbDelete(): Promise<void> {\n if (dbPromise) {\n (await dbPromise).close();\n await deleteDB(DATABASE_NAME);\n dbPromise = null;\n }\n}\n\nfunction getKey({ appConfig }: FirebaseInternalDependencies): string {\n return appConfig.appId;\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { ErrorFactory, ErrorMap } from '@firebase/util';\n\nexport const enum ErrorCode {\n MISSING_APP_CONFIG_VALUES = 'missing-app-config-values',\n AVAILABLE_IN_WINDOW = 'only-available-in-window',\n AVAILABLE_IN_SW = 'only-available-in-sw',\n PERMISSION_DEFAULT = 'permission-default',\n PERMISSION_BLOCKED = 'permission-blocked',\n UNSUPPORTED_BROWSER = 'unsupported-browser',\n INDEXED_DB_UNSUPPORTED = 'indexed-db-unsupported',\n FAILED_DEFAULT_REGISTRATION = 'failed-service-worker-registration',\n TOKEN_SUBSCRIBE_FAILED = 'token-subscribe-failed',\n TOKEN_SUBSCRIBE_NO_TOKEN = 'token-subscribe-no-token',\n TOKEN_UNSUBSCRIBE_FAILED = 'token-unsubscribe-failed',\n TOKEN_UPDATE_FAILED = 'token-update-failed',\n TOKEN_UPDATE_NO_TOKEN = 'token-update-no-token',\n INVALID_BG_HANDLER = 'invalid-bg-handler',\n USE_SW_AFTER_GET_TOKEN = 'use-sw-after-get-token',\n INVALID_SW_REGISTRATION = 'invalid-sw-registration',\n USE_VAPID_KEY_AFTER_GET_TOKEN = 'use-vapid-key-after-get-token',\n INVALID_VAPID_KEY = 'invalid-vapid-key'\n}\n\nexport const ERROR_MAP: ErrorMap<ErrorCode> = {\n [ErrorCode.MISSING_APP_CONFIG_VALUES]:\n 'Missing App configuration value: \"{$valueName}\"',\n [ErrorCode.AVAILABLE_IN_WINDOW]:\n 'This method is available in a Window context.',\n [ErrorCode.AVAILABLE_IN_SW]:\n 'This method is available in a service worker context.',\n [ErrorCode.PERMISSION_DEFAULT]:\n 'The notification permission was not granted and dismissed instead.',\n [ErrorCode.PERMISSION_BLOCKED]:\n 'The notification permission was not granted and blocked instead.',\n [ErrorCode.UNSUPPORTED_BROWSER]:\n \"This browser doesn't support the API's required to use the Firebase SDK.\",\n [ErrorCode.INDEXED_DB_UNSUPPORTED]:\n \"This browser doesn't support indexedDb.open() (ex. Safari iFrame, Firefox Private Browsing, etc)\",\n [ErrorCode.FAILED_DEFAULT_REGISTRATION]:\n 'We are unable to register the default service worker. {$browserErrorMessage}',\n [ErrorCode.TOKEN_SUBSCRIBE_FAILED]:\n 'A problem occurred while subscribing the user to FCM: {$errorInfo}',\n [ErrorCode.TOKEN_SUBSCRIBE_NO_TOKEN]:\n 'FCM returned no token when subscribing the user to push.',\n [ErrorCode.TOKEN_UNSUBSCRIBE_FAILED]:\n 'A problem occurred while unsubscribing the ' +\n 'user from FCM: {$errorInfo}',\n [ErrorCode.TOKEN_UPDATE_FAILED]:\n 'A problem occurred while updating the user from FCM: {$errorInfo}',\n [ErrorCode.TOKEN_UPDATE_NO_TOKEN]:\n 'FCM returned no token when updating the user to push.',\n [ErrorCode.USE_SW_AFTER_GET_TOKEN]:\n 'The useServiceWorker() method may only be called once and must be ' +\n 'called before calling getToken() to ensure your service worker is used.',\n [ErrorCode.INVALID_SW_REGISTRATION]:\n 'The input to useServiceWorker() must be a ServiceWorkerRegistration.',\n [ErrorCode.INVALID_BG_HANDLER]:\n 'The input to setBackgroundMessageHandler() must be a function.',\n [ErrorCode.INVALID_VAPID_KEY]: 'The public VAPID key must be a string.',\n [ErrorCode.USE_VAPID_KEY_AFTER_GET_TOKEN]:\n 'The usePublicVapidKey() method may only be called once and must be ' +\n 'called before calling getToken() to ensure your VAPID key is used.'\n};\n\ninterface ErrorParams {\n [ErrorCode.MISSING_APP_CONFIG_VALUES]: {\n valueName: string;\n };\n [ErrorCode.FAILED_DEFAULT_REGISTRATION]: { browserErrorMessage: string };\n [ErrorCode.TOKEN_SUBSCRIBE_FAILED]: { errorInfo: string };\n [ErrorCode.TOKEN_UNSUBSCRIBE_FAILED]: { errorInfo: string };\n [ErrorCode.TOKEN_UPDATE_FAILED]: { errorInfo: string };\n}\n\nexport const ERROR_FACTORY = new ErrorFactory<ErrorCode, ErrorParams>(\n 'messaging',\n 'Messaging',\n ERROR_MAP\n);\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { DEFAULT_VAPID_KEY, ENDPOINT } from '../util/constants';\nimport { ERROR_FACTORY, ErrorCode } from '../util/errors';\nimport { SubscriptionOptions, TokenDetails } from '../interfaces/token-details';\n\nimport { AppConfig } from '../interfaces/app-config';\nimport { FirebaseInternalDependencies } from '../interfaces/internal-dependencies';\n\nexport interface ApiResponse {\n token?: string;\n error?: { message: string };\n}\n\nexport interface ApiRequestBody {\n web: {\n endpoint: string;\n p256dh: string;\n auth: string;\n applicationPubKey?: string;\n };\n}\n\nexport async function requestGetToken(\n firebaseDependencies: FirebaseInternalDependencies,\n subscriptionOptions: SubscriptionOptions\n): Promise<string> {\n const headers = await getHeaders(firebaseDependencies);\n const body = getBody(subscriptionOptions);\n\n const subscribeOptions = {\n method: 'POST',\n headers,\n body: JSON.stringify(body)\n };\n\n let responseData: ApiResponse;\n try {\n const response = await fetch(\n getEndpoint(firebaseDependencies.appConfig),\n subscribeOptions\n );\n responseData = await response.json();\n } catch (err) {\n throw ERROR_FACTORY.create(ErrorCode.TOKEN_SUBSCRIBE_FAILED, {\n errorInfo: (err as Error)?.toString()\n });\n }\n\n if (responseData.error) {\n const message = responseData.error.message;\n throw ERROR_FACTORY.create(ErrorCode.TOKEN_SUBSCRIBE_FAILED, {\n errorInfo: message\n });\n }\n\n if (!responseData.token) {\n throw ERROR_FACTORY.create(ErrorCode.TOKEN_SUBSCRIBE_NO_TOKEN);\n }\n\n return responseData.token;\n}\n\nexport async function requestUpdateToken(\n firebaseDependencies: FirebaseInternalDependencies,\n tokenDetails: TokenDetails\n): Promise<string> {\n const headers = await getHeaders(firebaseDependencies);\n const body = getBody(tokenDetails.subscriptionOptions!);\n\n const updateOptions = {\n method: 'PATCH',\n headers,\n body: JSON.stringify(body)\n };\n\n let responseData: ApiResponse;\n try {\n const response = await fetch(\n `${getEndpoint(firebaseDependencies.appConfig)}/${tokenDetails.token}`,\n updateOptions\n );\n responseData = await response.json();\n } catch (err) {\n throw ERROR_FACTORY.create(ErrorCode.TOKEN_UPDATE_FAILED, {\n errorInfo: (err as Error)?.toString()\n });\n }\n\n if (responseData.error) {\n const message = responseData.error.message;\n throw ERROR_FACTORY.create(ErrorCode.TOKEN_UPDATE_FAILED, {\n errorInfo: message\n });\n }\n\n if (!responseData.token) {\n throw ERROR_FACTORY.create(ErrorCode.TOKEN_UPDATE_NO_TOKEN);\n }\n\n return responseData.token;\n}\n\nexport async function requestDeleteToken(\n firebaseDependencies: FirebaseInternalDependencies,\n token: string\n): Promise<void> {\n const headers = await getHeaders(firebaseDependencies);\n\n const unsubscribeOptions = {\n method: 'DELETE',\n headers\n };\n\n try {\n const response = await fetch(\n `${getEndpoint(firebaseDependencies.appConfig)}/${token}`,\n unsubscribeOptions\n );\n const responseData: ApiResponse = await response.json();\n if (responseData.error) {\n const message = responseData.error.message;\n throw ERROR_FACTORY.create(ErrorCode.TOKEN_UNSUBSCRIBE_FAILED, {\n errorInfo: message\n });\n }\n } catch (err) {\n throw ERROR_FACTORY.create(ErrorCode.TOKEN_UNSUBSCRIBE_FAILED, {\n errorInfo: (err as Error)?.toString()\n });\n }\n}\n\nfunction getEndpoint({ projectId }: AppConfig): string {\n return `${ENDPOINT}/projects/${projectId!}/registrations`;\n}\n\nasync function getHeaders({\n appConfig,\n installations\n}: FirebaseInternalDependencies): Promise<Headers> {\n const authToken = await installations.getToken();\n\n return new Headers({\n 'Content-Type': 'application/json',\n Accept: 'application/json',\n 'x-goog-api-key': appConfig.apiKey!,\n 'x-goog-firebase-installations-auth': `FIS ${authToken}`\n });\n}\n\nfunction getBody({\n p256dh,\n auth,\n endpoint,\n vapidKey\n}: SubscriptionOptions): ApiRequestBody {\n const body: ApiRequestBody = {\n web: {\n endpoint,\n auth,\n p256dh\n }\n };\n\n if (vapidKey !== DEFAULT_VAPID_KEY) {\n body.web.applicationPubKey = vapidKey;\n }\n\n return body;\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { SubscriptionOptions, TokenDetails } from '../interfaces/token-details';\nimport {\n arrayToBase64,\n base64ToArray\n} from '../helpers/array-base64-translator';\nimport { dbGet, dbRemove, dbSet } from './idb-manager';\nimport {\n requestDeleteToken,\n requestGetToken,\n requestUpdateToken\n} from './requests';\n\nimport { FirebaseInternalDependencies } from '../interfaces/internal-dependencies';\nimport { MessagingService } from '../messaging-service';\n\n// UpdateRegistration will be called once every week.\nconst TOKEN_EXPIRATION_MS = 7 * 24 * 60 * 60 * 1000; // 7 days\n\nexport async function getTokenInternal(\n messaging: MessagingService\n): Promise<string> {\n const pushSubscription = await getPushSubscription(\n messaging.swRegistration!,\n messaging.vapidKey!\n );\n\n const subscriptionOptions: SubscriptionOptions = {\n vapidKey: messaging.vapidKey!,\n swScope: messaging.swRegistration!.scope,\n endpoint: pushSubscription.endpoint,\n auth: arrayToBase64(pushSubscription.getKey('auth')!),\n p256dh: arrayToBase64(pushSubscription.getKey('p256dh')!)\n };\n\n const tokenDetails = await dbGet(messaging.firebaseDependencies);\n if (!tokenDetails) {\n // No token, get a new one.\n return getNewToken(messaging.firebaseDependencies, subscriptionOptions);\n } else if (\n !isTokenValid(tokenDetails.subscriptionOptions!, subscriptionOptions)\n ) {\n // Invalid token, get a new one.\n try {\n await requestDeleteToken(\n messaging.firebaseDependencies!,\n tokenDetails.token\n );\n } catch (e) {\n // Suppress errors because of #2364\n console.warn(e);\n }\n\n return getNewToken(messaging.firebaseDependencies!, subscriptionOptions);\n } else if (Date.now() >= tokenDetails.createTime + TOKEN_EXPIRATION_MS) {\n // Weekly token refresh\n return updateToken(messaging, {\n token: tokenDetails.token,\n createTime: Date.now(),\n subscriptionOptions\n });\n } else {\n // Valid token, nothing to do.\n return tokenDetails.token;\n }\n}\n\n/**\n * This method deletes the token from the database, unsubscribes the token from FCM, and unregisters\n * the push subscription if it exists.\n */\nexport async function deleteTokenInternal(\n messaging: MessagingService\n): Promise<boolean> {\n const tokenDetails = await dbGet(messaging.firebaseDependencies);\n if (tokenDetails) {\n await requestDeleteToken(\n messaging.firebaseDependencies,\n tokenDetails.token\n );\n await dbRemove(messaging.firebaseDependencies);\n }\n\n // Unsubscribe from the push subscription.\n const pushSubscription =\n await messaging.swRegistration!.pushManager.getSubscription();\n if (pushSubscription) {\n return pushSubscription.unsubscribe();\n }\n\n // If there's no SW, consider it a success.\n return true;\n}\n\nasync function updateToken(\n messaging: MessagingService,\n tokenDetails: TokenDetails\n): Promise<string> {\n try {\n const updatedToken = await requestUpdateToken(\n messaging.firebaseDependencies,\n tokenDetails\n );\n\n const updatedTokenDetails: TokenDetails = {\n ...tokenDetails,\n token: updatedToken,\n createTime: Date.now()\n };\n\n await dbSet(messaging.firebaseDependencies, updatedTokenDetails);\n return updatedToken;\n } catch (e) {\n await deleteTokenInternal(messaging);\n throw e;\n }\n}\n\nasync function getNewToken(\n firebaseDependencies: FirebaseInternalDependencies,\n subscriptionOptions: SubscriptionOptions\n): Promise<string> {\n const token = await requestGetToken(\n firebaseDependencies,\n subscriptionOptions\n );\n const tokenDetails: TokenDetails = {\n token,\n createTime: Date.now(),\n subscriptionOptions\n };\n await dbSet(firebaseDependencies, tokenDetails);\n return tokenDetails.token;\n}\n\n/**\n * Gets a PushSubscription for the current user.\n */\nasync function getPushSubscription(\n swRegistration: ServiceWorkerRegistration,\n vapidKey: string\n): Promise<PushSubscription> {\n const subscription = await swRegistration.pushManager.getSubscription();\n if (subscription) {\n return subscription;\n }\n\n return swRegistration.pushManager.subscribe({\n userVisibleOnly: true,\n // Chrome <= 75 doesn't support base64-encoded VAPID key. For backward compatibility, VAPID key\n // submitted to pushManager#subscribe must be of type Uint8Array.\n applicationServerKey: base64ToArray(vapidKey)\n });\n}\n\n/**\n * Checks if the saved tokenDetails object matches the configuration provided.\n */\nfunction isTokenValid(\n dbOptions: SubscriptionOptions,\n currentOptions: SubscriptionOptions\n): boolean {\n const isVapidKeyEqual = currentOptions.vapidKey === dbOptions.vapidKey;\n const isEndpointEqual = currentOptions.endpoint === dbOptions.endpoint;\n const isAuthEqual = currentOptions.auth === dbOptions.auth;\n const isP256dhEqual = currentOptions.p256dh === dbOptions.p256dh;\n\n return isVapidKeyEqual && isEndpointEqual && isAuthEqual && isP256dhEqual;\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { MessagePayload } from '../interfaces/public-types';\nimport { MessagePayloadInternal } from '../interfaces/internal-message-payload';\n\nexport function externalizePayload(\n internalPayload: MessagePayloadInternal\n): MessagePayload {\n const payload: MessagePayload = {\n from: internalPayload.from,\n // eslint-disable-next-line camelcase\n collapseKey: internalPayload.collapse_key,\n // eslint-disable-next-line camelcase\n messageId: internalPayload.fcmMessageId\n } as MessagePayload;\n\n propagateNotificationPayload(payload, internalPayload);\n propagateDataPayload(payload, internalPayload);\n propagateFcmOptions(payload, internalPayload);\n\n return payload;\n}\n\nfunction propagateNotificationPayload(\n payload: MessagePayload,\n messagePayloadInternal: MessagePayloadInternal\n): void {\n if (!messagePayloadInternal.notification) {\n return;\n }\n\n payload.notification = {};\n\n const title = messagePayloadInternal.notification!.title;\n if (!!title) {\n payload.notification!.title = title;\n }\n\n const body = messagePayloadInternal.notification!.body;\n if (!!body) {\n payload.notification!.body = body;\n }\n\n const image = messagePayloadInternal.notification!.image;\n if (!!image) {\n payload.notification!.image = image;\n }\n\n const icon = messagePayloadInternal.notification!.icon;\n if (!!icon) {\n payload.notification!.icon = icon;\n }\n}\n\nfunction propagateDataPayload(\n payload: MessagePayload,\n messagePayloadInternal: MessagePayloadInternal\n): void {\n if (!messagePayloadInternal.data) {\n return;\n }\n\n payload.data = messagePayloadInternal.data as { [key: string]: string };\n}\n\nfunction propagateFcmOptions(\n payload: MessagePayload,\n messagePayloadInternal: MessagePayloadInternal\n): void {\n // fcmOptions.link value is written into notification.click_action. see more in b/232072111\n if (\n !messagePayloadInternal.fcmOptions &&\n !messagePayloadInternal.notification?.click_action\n ) {\n return;\n }\n\n payload.fcmOptions = {};\n\n const link =\n messagePayloadInternal.fcmOptions?.link ??\n messagePayloadInternal.notification?.click_action;\n\n if (!!link) {\n payload.fcmOptions!.link = link;\n }\n\n // eslint-disable-next-line camelcase\n const analyticsLabel = messagePayloadInternal.fcmOptions?.analytics_label;\n if (!!analyticsLabel) {\n payload.fcmOptions!.analyticsLabel = analyticsLabel;\n }\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { CONSOLE_CAMPAIGN_ID } from '../util/constants';\nimport { ConsoleMessageData } from '../interfaces/internal-message-payload';\n\nexport function isConsoleMessage(data: unknown): data is ConsoleMessageData {\n // This message has a campaign ID, meaning it was sent using the Firebase Console.\n return typeof data === 'object' && !!data && CONSOLE_CAMPAIGN_ID in data;\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n DEFAULT_BACKOFF_TIME_MS,\n EVENT_MESSAGE_DELIVERED,\n FCM_LOG_SOURCE,\n LOG_INTERVAL_IN_MS,\n MAX_NUMBER_OF_EVENTS_PER_LOG_REQUEST,\n MAX_RETRIES,\n MessageType,\n SDK_PLATFORM_WEB\n} from '../util/constants';\nimport {\n FcmEvent,\n LogEvent,\n LogRequest,\n LogResponse\n} from '../interfaces/logging-types';\n\nimport { MessagePayloadInternal } from '../interfaces/internal-message-payload';\nimport { MessagingService } from '../messaging-service';\n\nconst FIRELOG_ENDPOINT = _mergeStrings(\n 'hts/frbslgigp.ogepscmv/ieo/eaylg',\n 'tp:/ieaeogn-agolai.o/1frlglgc/o'\n);\n\nconst FCM_TRANSPORT_KEY = _mergeStrings(\n 'AzSCbw63g1R0nCw85jG8',\n 'Iaya3yLKwmgvh7cF0q4'\n);\n\nexport function startLoggingService(messaging: MessagingService): void {\n if (!messaging.isLogServiceStarted) {\n _processQueue(messaging, LOG_INTERVAL_IN_MS);\n messaging.isLogServiceStarted = true;\n }\n}\n\n/**\n *\n * @param messaging the messaging instance.\n * @param offsetInMs this method execute after `offsetInMs` elapsed .\n */\nexport function _processQueue(\n messaging: MessagingService,\n offsetInMs: number\n): void {\n setTimeout(async () => {\n if (!messaging.deliveryMetricsExportedToBigQueryEnabled) {\n // flush events and terminate logging service\n messaging.logEvents = [];\n messaging.isLogServiceStarted = false;\n\n return;\n }\n\n if (!messaging.logEvents.length) {\n return _processQueue(messaging, LOG_INTERVAL_IN_MS);\n }\n\n await _dispatchLogEvents(messaging);\n }, offsetInMs);\n}\n\nexport async function _dispatchLogEvents(\n messaging: MessagingService\n): Promise<void> {\n for (\n let i = 0, n = messaging.logEvents.length;\n i < n;\n i += MAX_NUMBER_OF_EVENTS_PER_LOG_REQUEST\n ) {\n const logRequest = _createLogRequest(\n messaging.logEvents.slice(i, i + MAX_NUMBER_OF_EVENTS_PER_LOG_REQUEST)\n );\n\n let retryCount = 0,\n response = {} as Response;\n\n do {\n try {\n response = await fetch(\n FIRELOG_ENDPOINT.concat('?key=', FCM_TRANSPORT_KEY),\n {\n method: 'POST',\n body: JSON.stringify(logRequest)\n }\n );\n\n // don't retry on 200s or non retriable errors\n if (response.ok || (!response.ok && !isRetriableError(response))) {\n break;\n }\n\n if (!response.ok && isRetriableError(response)) {\n // rethrow to retry with quota\n throw new Error(\n 'a retriable Non-200 code is returned in fetch to Firelog endpoint. Retry'\n );\n }\n } catch (error) {\n const isLastAttempt = retryCount === MAX_RETRIES;\n if (isLastAttempt) {\n // existing the do-while interactive retry logic because retry quota has reached.\n break;\n }\n }\n\n let delayInMs: number;\n try {\n delayInMs = Number(\n ((await response.json()) as LogResponse).nextRequestWaitMillis\n );\n } catch (e) {\n delayInMs = DEFAULT_BACKOFF_TIME_MS;\n }\n\n await new Promise(resolve => setTimeout(resolve, delayInMs));\n\n retryCount++;\n } while (retryCount < MAX_RETRIES);\n }\n\n messaging.logEvents = [];\n // schedule for next logging\n _processQueue(messaging, LOG_INTERVAL_IN_MS);\n}\n\nfunction isRetriableError(response: Response): boolean {\n const httpStatus = response.status;\n\n return (\n httpStatus === 429 ||\n httpStatus === 500 ||\n httpStatus === 503 ||\n httpStatus === 504\n );\n}\n\nexport async function stageLog(\n messaging: MessagingService,\n internalPayload: MessagePayloadInternal\n): Promise<void> {\n const fcmEvent = createFcmEvent(\n internalPayload,\n await messaging.firebaseDependencies.installations.getId()\n );\n\n createAndEnqueueLogEvent(messaging, fcmEvent);\n}\n\nfunction createFcmEvent(\n internalPayload: MessagePayloadInternal,\n fid: string\n): FcmEvent {\n const fcmEvent = {} as FcmEvent;\n\n /* eslint-disable camelcase */\n // some fields should always be non-null. Still check to ensure.\n if (!!internalPayload.from) {\n fcmEvent.project_number = internalPayload.from;\n }\n\n if (!!internalPayload.fcmMessageId) {\n fcmEvent.message_id = internalPayload.fcmMessageId;\n }\n\n fcmEvent.instance_id = fid;\n\n if (!!internalPayload.notification) {\n fcmEvent.message_type = MessageType.DISPLAY_NOTIFICATION.toString();\n } else {\n fcmEvent.message_type = MessageType.DATA_MESSAGE.toString();\n }\n\n fcmEvent.sdk_platform = SDK_PLATFORM_WEB.toString();\n fcmEvent.package_name = self.origin.replace(/(^\\w+:|^)\\/\\//, '');\n\n if (!!internalPayload.collapse_key) {\n fcmEvent.collapse_key = internalPayload.collapse_key;\n }\n\n fcmEvent.event = EVENT_MESSAGE_DELIVERED.toString();\n\n if (!!internalPayload.fcmOptions?.analytics_label) {\n fcmEvent.analytics_label = internalPayload.fcmOptions?.analytics_label;\n }\n\n /* eslint-enable camelcase */\n return fcmEvent;\n}\n\nfunction createAndEnqueueLogEvent(\n messaging: MessagingService,\n fcmEvent: FcmEvent\n): void {\n const logEvent = {} as LogEvent;\n\n /* eslint-disable camelcase */\n logEvent.event_time_ms = Math.floor(Date.now()).toString();\n logEvent.source_extension_json_proto3 = JSON.stringify(fcmEvent);\n // eslint-disable-next-line camelcase\n\n messaging.logEvents.push(logEvent);\n}\n\nexport function _createLogRequest(logEventQueue: LogEvent[]): LogRequest {\n const logRequest = {} as LogRequest;\n\n /* eslint-disable camelcase */\n logRequest.log_source = FCM_LOG_SOURCE.toString();\n logRequest.log_event = logEventQueue;\n /* eslint-enable camelcase */\n\n return logRequest;\n}\n\nexport function _mergeStrings(s1: string, s2: string): string {\n const resultArray = [];\n for (let i = 0; i < s1.length; i++) {\n resultArray.push(s1.charAt(i));\n if (i < s2.length) {\n resultArray.push(s2.charAt(i));\n }\n }\n\n return resultArray.join('');\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { ERROR_FACTORY, ErrorCode } from '../util/errors';\nimport { FirebaseApp, FirebaseOptions } from '@firebase/app';\n\nimport { AppConfig } from '../interfaces/app-config';\nimport { FirebaseError } from '@firebase/util';\n\nexport function extractAppConfig(app: FirebaseApp): AppConfig {\n if (!app || !app.options) {\n throw getMissingValueError('App Configuration Object');\n }\n\n if (!app.name) {\n throw getMissingValueError('App Name');\n }\n\n // Required app config keys\n const configKeys: ReadonlyArray<keyof FirebaseOptions> = [\n 'projectId',\n 'apiKey',\n 'appId',\n 'messagingSenderId'\n ];\n\n const { options } = app;\n for (const keyName of configKeys) {\n if (!options[keyName]) {\n throw getMissingValueError(keyName);\n }\n }\n\n return {\n appName: app.name,\n projectId: options.projectId!,\n apiKey: options.apiKey!,\n appId: options.appId!,\n senderId: options.messagingSenderId!\n };\n}\n\nfunction getMissingValueError(valueName: string): FirebaseError {\n return ERROR_FACTORY.create(ErrorCode.MISSING_APP_CONFIG_VALUES, {\n valueName\n });\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp, _FirebaseService } from '@firebase/app';\nimport { MessagePayload, NextFn, Observer } from './interfaces/public-types';\n\nimport { FirebaseAnalyticsInternalName } from '@firebase/analytics-interop-types';\nimport { FirebaseInternalDependencies } from './interfaces/internal-dependencies';\nimport { LogEvent } from './interfaces/logging-types';\nimport { Provider } from '@firebase/component';\nimport { _FirebaseInstallationsInternal } from '@firebase/installations';\nimport { extractAppConfig } from './helpers/extract-app-config';\n\nexport class MessagingService implements _FirebaseService {\n readonly app!: FirebaseApp;\n readonly firebaseDependencies!: FirebaseInternalDependencies;\n\n swRegistration?: ServiceWorkerRegistration;\n vapidKey?: string;\n // logging is only done with end user consent. Default to false.\n deliveryMetricsExportedToBigQueryEnabled: boolean = false;\n\n onBackgroundMessageHandler:\n | NextFn<MessagePayload>\n | Observer<MessagePayload>\n | null = null;\n\n onMessageHandler: NextFn<MessagePayload> | Observer<MessagePayload> | null =\n null;\n\n logEvents: LogEvent[] = [];\n isLogServiceStarted: boolean = false;\n\n constructor(\n app: FirebaseApp,\n installations: _FirebaseInstallationsInternal,\n analyticsProvider: Provider<FirebaseAnalyticsInternalName>\n ) {\n const appConfig = extractAppConfig(app);\n\n this.firebaseDependencies = {\n app,\n appConfig,\n installations,\n analyticsProvider\n };\n }\n\n _delete(): Promise<void> {\n return Promise.resolve();\n }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { DEFAULT_SW_PATH, DEFAULT_SW_SCOPE } from '../util/constants';\nimport { ERROR_FACTORY, ErrorCode } from '../util/errors';\n\nimport { MessagingService } from '../messaging-service';\n\nexport async function registerDefaultSw(\n messaging: MessagingService\n): Promise<void> {\n try {\n messaging.swRegistration = await navigator.serviceWorker.register(\n DEFAULT_SW_PATH,\n {\n scope: DEFAULT_SW_SCOPE\n }\n );\n\n // The timing when browser updates sw when sw has an update is unreliable from experiment. It\n // leads to version conflict when the SDK upgrades to a newer version in the main page, but sw\n // is stuck with the old version. For example,\n // https://github.com/firebase/firebase-js-sdk/issues/2590 The following line reliably updates\n // sw if there was an update.\n messaging.swRegistration.update().catch(() => {\n /* it is non blocking and we don't care if it failed */\n });\n } catch (e) {\n throw ERROR_FACTORY.create(ErrorCode.FAILED_DEFAULT_REGISTRATION, {\n browserErrorMessage: (e as Error)?.message\n });\n }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { ERROR_FACTORY, ErrorCode } from '../util/errors';\n\nimport { MessagingService } from '../messaging-service';\nimport { registerDefaultSw } from './registerDefaultSw';\n\nexport async function updateSwReg(\n messaging: MessagingService,\n swRegistration?: ServiceWorkerRegistration | undefined\n): Promise<void> {\n if (!swRegistration && !messaging.swRegistration) {\n await registerDefaultSw(messaging);\n }\n\n if (!swRegistration && !!messaging.swRegistration) {\n return;\n }\n\n if (!(swRegistration instanceof ServiceWorkerRegistration)) {\n throw ERROR_FACTORY.create(ErrorCode.INVALID_SW_REGISTRATION);\n }\n\n messaging.swRegistration = swRegistration;\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { DEFAULT_VAPID_KEY } from '../util/constants';\nimport { MessagingService } from '../messaging-service';\n\nexport async function updateVapidKey(\n messaging: MessagingService,\n vapidKey?: string | undefined\n): Promise<void> {\n if (!!vapidKey) {\n messaging.vapidKey = vapidKey;\n } else if (!messaging.vapidKey) {\n messaging.vapidKey = DEFAULT_VAPID_KEY;\n }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { ERROR_FACTORY, ErrorCode } from '../util/errors';\n\nimport { MessagingService } from '../messaging-service';\nimport { getTokenInternal } from '../internals/token-manager';\nimport { updateSwReg } from '../helpers/updateSwReg';\nimport { updateVapidKey } from '../helpers/updateVapidKey';\nimport { GetTokenOptions } from '../interfaces/public-types';\n\nexport async function getToken(\n messaging: MessagingService,\n options?: GetTokenOptions\n): Promise<string> {\n if (!navigator) {\n throw ERROR_FACTORY.create(ErrorCode.AVAILABLE_IN_WINDOW);\n }\n\n if (Notification.permission === 'default') {\n await Notification.requestPermission();\n }\n\n if (Notification.permission !== 'granted') {\n throw ERROR_FACTORY.create(ErrorCode.PERMISSION_BLOCKED);\n }\n\n await updateVapidKey(messaging, options?.vapidKey);\n await updateSwReg(messaging, options?.serviceWorkerRegistration);\n\n return getTokenInternal(messaging);\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n CONSOLE_CAMPAIGN_ID,\n CONSOLE_CAMPAIGN_NAME,\n CONSOLE_CAMPAIGN_TIME\n} from '../util/constants';\nimport {\n ConsoleMessageData,\n MessageType\n} from '../interfaces/internal-message-payload';\n\nimport { MessagingService } from '../messaging-service';\n\nexport async function logToScion(\n messaging: MessagingService,\n messageType: MessageType,\n data: ConsoleMessageData\n): Promise<void> {\n const eventType = getEventType(messageType);\n const analytics =\n await messaging.firebaseDependencies.analyticsProvider.get();\n analytics.logEvent(eventType, {\n /* eslint-disable camelcase */\n message_id: data[CONSOLE_CAMPAIGN_ID],\n message_name: data[CONSOLE_CAMPAIGN_NAME],\n message_time: data[CONSOLE_CAMPAIGN_TIME],\n message_device_time: Math.floor(Date.now() / 1000)\n /* eslint-enable camelcase */\n });\n}\n\nfunction getEventType(messageType: MessageType): string {\n switch (messageType) {\n case MessageType.NOTIFICATION_CLICKED:\n return 'notification_open';\n case MessageType.PUSH_RECEIVED:\n return 'notification_foreground';\n default:\n throw new Error();\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n MessagePayloadInternal,\n MessageType\n} from '../interfaces/internal-message-payload';\n\nimport { CONSOLE_CAMPAIGN_ANALYTICS_ENABLED } from '../util/constants';\nimport { MessagingService } from '../messaging-service';\nimport { externalizePayload } from '../helpers/externalizePayload';\nimport { isConsoleMessage } from '../helpers/is-console-message';\nimport { logToScion } from '../helpers/logToScion';\n\nexport async function messageEventListener(\n messaging: MessagingService,\n event: MessageEvent\n): Promise<void> {\n const internalPayload = event.data as MessagePayloadInternal;\n\n if (!internalPayload.isFirebaseMessaging) {\n return;\n }\n\n if (\n messaging.onMessageHandler &&\n internalPayload.messageType === MessageType.PUSH_RECEIVED\n ) {\n if (typeof messaging.onMessageHandler === 'function') {\n messaging.onMessageHandler(externalizePayload(internalPayload));\n } else {\n messaging.onMessageHandler.next(externalizePayload(internalPayload));\n }\n }\n\n // Log to Scion if applicable\n const dataPayload = internalPayload.data;\n if (\n isConsoleMessage(dataPayload) &&\n dataPayload[CONSOLE_CAMPAIGN_ANALYTICS_ENABLED] === '1'\n ) {\n await logToScion(messaging, internalPayload.messageType!, dataPayload);\n }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n Component,\n ComponentContainer,\n ComponentType,\n InstanceFactory\n} from '@firebase/component';\nimport {\n onNotificationClick,\n onPush,\n onSubChange\n} from '../listeners/sw-listeners';\n\nimport { GetTokenOptions } from '../interfaces/public-types';\nimport { MessagingInternal } from '@firebase/messaging-interop-types';\nimport { MessagingService } from '../messaging-service';\nimport { ServiceWorkerGlobalScope } from '../util/sw-types';\nimport { _registerComponent, registerVersion } from '@firebase/app';\nimport { getToken } from '../api/getToken';\nimport { messageEventListener } from '../listeners/window-listener';\n\nimport { name, version } from '../../package.json';\n\nconst WindowMessagingFactory: InstanceFactory<'messaging'> = (\n container: ComponentContainer\n) => {\n const messaging = new MessagingService(\n container.getProvider('app').getImmediate(),\n container.getProvider('installations-internal').getImmediate(),\n container.getProvider('analytics-internal')\n );\n\n navigator.serviceWorker.addEventListener('message', e =>\n messageEventListener(messaging as MessagingService, e)\n );\n\n return messaging;\n};\n\nconst WindowMessagingInternalFactory: InstanceFactory<'messaging-internal'> = (\n container: ComponentContainer\n) => {\n const messaging = container\n .getProvider('messaging')\n .getImmediate() as MessagingService;\n\n const messagingInternal: MessagingInternal = {\n getToken: (options?: GetTokenOptions) => getToken(messaging, options)\n };\n\n return messagingInternal;\n};\n\ndeclare const self: ServiceWorkerGlobalScope;\nconst SwMessagingFactory: InstanceFactory<'messaging'> = (\n container: ComponentContainer\n) => {\n const messaging = new MessagingService(\n container.getProvider('app').getImmediate(),\n container.getProvider('installations-internal').getImmediate(),\n container.getProvider('analytics-internal')\n );\n\n self.addEventListener('push', e => {\n e.waitUntil(onPush(e, messaging as MessagingService));\n });\n self.addEventListener('pushsubscriptionchange', e => {\n e.waitUntil(onSubChange(e, messaging as MessagingService));\n });\n self.addEventListener('notificationclick', e => {\n e.waitUntil(onNotificationClick(e));\n });\n\n return messaging;\n};\n\nexport function registerMessagingInWindow(): void {\n _registerComponent(\n new Component('messaging', WindowMessagingFactory, ComponentType.PUBLIC)\n );\n\n _registerComponent(\n new Component(\n 'messaging-internal',\n WindowMessagingInternalFactory,\n ComponentType.PRIVATE\n )\n );\n\n registerVersion(name, version);\n // BUILD_TARGET will be replaced by values like esm5, esm2017, cjs5, etc during the compilation\n registerVersion(name, version, '__BUILD_TARGET__');\n}\n\n/**\n * The messaging instance registered in sw is named differently than that of in client. This is\n * because both `registerMessagingInWindow` and `registerMessagingInSw` would be called in\n * `messaging-compat` and component with the same name can only be registered once.\n */\nexport function registerMessagingInSw(): void {\n _registerComponent(\n new Component('messaging-sw', SwMessagingFactory, ComponentType.PUBLIC)\n );\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n areCookiesEnabled,\n isIndexedDBAvailable,\n validateIndexedDBOpenable\n} from '@firebase/util';\n\n/**\n * Checks if all required APIs exist in the browser.\n * @returns a Promise that resolves to a boolean.\n *\n * @public\n */\nexport async function isWindowSupported(): Promise<boolean> {\n try {\n // This throws if open() is unsupported, so adding it to the conditional\n // statement below can cause an uncaught error.\n await validateIndexedDBOpenable();\n } catch (e) {\n return false;\n }\n // firebase-js-sdk/issues/2393 reveals that idb#open in Safari iframe and Firefox private browsing\n // might be prohibited to run. In these contexts, an error would be thrown during the messaging\n // instantiating phase, informing the developers to import/call isSupported for special handling.\n return (\n typeof window !== 'undefined' &&\n isIndexedDBAvailable() &&\n areCookiesEnabled() &&\n 'serviceWorker' in navigator &&\n 'PushManager' in window &&\n 'Notification' in window &&\n 'fetch' in window &&\n ServiceWorkerRegistration.prototype.hasOwnProperty('showNotification') &&\n PushSubscription.prototype.hasOwnProperty('getKey')\n );\n}\n\n/**\n * Checks whether all required APIs exist within SW Context\n * @returns a Promise that resolves to a boolean.\n *\n * @public\n */\nexport async function isSwSupported(): Promise<boolean> {\n // firebase-js-sdk/issues/2393 reveals that idb#open in Safari iframe and Firefox private browsing\n // might be prohibited to run. In these contexts, an error would be thrown during the messaging\n // instantiating phase, informing the developers to import/call isSupported for special handling.\n return (\n isIndexedDBAvailable() &&\n (await validateIndexedDBOpenable()) &&\n 'PushManager' in self &&\n 'Notification' in self &&\n ServiceWorkerRegistration.prototype.hasOwnProperty('showNotification') &&\n PushSubscription.prototype.hasOwnProperty('getKey')\n );\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { ERROR_FACTORY, ErrorCode } from '../util/errors';\n\nimport { MessagingService } from '../messaging-service';\nimport { deleteTokenInternal } from '../internals/token-manager';\nimport { registerDefaultSw } from '../helpers/registerDefaultSw';\n\nexport async function deleteToken(\n messaging: MessagingService\n): Promise<boolean> {\n if (!navigator) {\n throw ERROR_FACTORY.create(ErrorCode.AVAILABLE_IN_WINDOW);\n }\n\n if (!messaging.swRegistration) {\n await registerDefaultSw(messaging);\n }\n\n return deleteTokenInternal(messaging);\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { ERROR_FACTORY, ErrorCode } from '../util/errors';\n\nimport {\n MessagePayload,\n NextFn,\n Observer,\n Unsubscribe\n} from '../interfaces/public-types';\nimport { MessagingService } from '../messaging-service';\n\nexport function onMessage(\n messaging: MessagingService,\n nextOrObserver: NextFn<MessagePayload> | Observer<MessagePayload>\n): Unsubscribe {\n if (!navigator) {\n throw ERROR_FACTORY.create(ErrorCode.AVAILABLE_IN_WINDOW);\n }\n\n messaging.onMessageHandler = nextOrObserver;\n\n return () => {\n messaging.onMessageHandler = null;\n };\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { ERROR_FACTORY, ErrorCode } from './util/errors';\nimport { FirebaseApp, _getProvider, getApp } from '@firebase/app';\nimport {\n GetTokenOptions,\n MessagePayload,\n Messaging\n} from './interfaces/public-types';\nimport {\n NextFn,\n Observer,\n Unsubscribe,\n getModularInstance\n} from '@firebase/util';\nimport { isSwSupported, isWindowSupported } from './api/isSupported';\n\nimport { MessagingService } from './messaging-service';\nimport { deleteToken as _deleteToken } from './api/deleteToken';\nimport { getToken as _getToken } from './api/getToken';\nimport { onBackgroundMessage as _onBackgroundMessage } from './api/onBackgroundMessage';\nimport { onMessage as _onMessage } from './api/onMessage';\nimport { _setDeliveryMetricsExportedToBigQueryEnabled } from './api/setDeliveryMetricsExportedToBigQueryEnabled';\n\n/**\n * Retrieves a Firebase Cloud Messaging instance.\n *\n * @returns The Firebase Cloud Messaging instance associated with the provided firebase app.\n *\n * @public\n */\nexport function getMessagingInWindow(app: FirebaseApp = getApp()): Messaging {\n // Conscious decision to make this async check non-blocking during the messaging instance\n // initialization phase for performance consideration. An error would be thrown latter for\n // developer's information. Developers can then choose to import and call `isSupported` for\n // special handling.\n isWindowSupported().then(\n isSupported => {\n // If `isWindowSupported()` resolved, but returned false.\n if (!isSupported) {\n throw ERROR_FACTORY.create(ErrorCode.UNSUPPORTED_BROWSER);\n }\n },\n _ => {\n // If `isWindowSupported()` rejected.\n throw ERROR_FACTORY.create(ErrorCode.INDEXED_DB_UNSUPPORTED);\n }\n );\n return _getProvider(getModularInstance(app), 'messaging').getImmediate();\n}\n\n/**\n * Retrieves a Firebase Cloud Messaging instance.\n *\n * @returns The Firebase Cloud Messaging instance associated with the provided firebase app.\n *\n * @public\n */\nexport function getMessagingInSw(app: FirebaseApp = getApp()): Messaging {\n // Conscious decision to make this async check non-blocking during the messaging instance\n // initialization phase for performance consideration. An error would be thrown latter for\n // developer's information. Developers can then choose to import and call `isSupported` for\n // special handling.\n isSwSupported().then(\n isSupported => {\n // If `isSwSupported()` resolved, but returned false.\n if (!isSupported) {\n throw ERROR_FACTORY.create(ErrorCode.UNSUPPORTED_BROWSER);\n }\n },\n _ => {\n // If `isSwSupported()` rejected.\n throw ERROR_FACTORY.create(ErrorCode.INDEXED_DB_UNSUPPORTED);\n }\n );\n return _getProvider(getModularInstance(app), 'messaging-sw').getImmediate();\n}\n\n/**\n * Subscribes the {@link Messaging} instance to push notifications. Returns an Firebase Cloud\n * Messaging registration token that can be used to send push messages to that {@link Messaging}\n * instance.\n *\n * If a notification permission isn't already granted, this method asks the user for permission. The\n * returned promise rejects if the user does not allow the app to show notifications.\n *\n * @param messaging - The {@link Messaging} instance.\n * @param options - Provides an optional vapid key and an optinoal service worker registration\n *\n * @returns The promise resolves with an FCM registration token.\n *\n * @public\n */\nexport async function getToken(\n messaging: Messaging,\n options?: GetTokenOptions\n): Promise<string> {\n messaging = getModularInstance(messaging);\n return _getToken(messaging as MessagingService, options);\n}\n\n/**\n * Deletes the registration token associated with this {@link Messaging} instance and unsubscribes\n * the {@link Messaging} instance from the push subscription.\n *\n * @param messaging - The {@link Messaging} instance.\n *\n * @returns The promise resolves when the token has been successfully deleted.\n *\n * @public\n */\nexport function deleteToken(messaging: Messaging): Promise<boolean> {\n messaging = getModularInstance(messaging);\n return _deleteToken(messaging as MessagingService);\n}\n\n/**\n * When a push message is received and the user is currently on a page for your origin, the\n * message is passed to the page and an `onMessage()` event is dispatched with the payload of\n * the push message.\n *\n *\n * @param messaging - The {@link Messaging} instance.\n * @param nextOrObserver - This function, or observer object with `next` defined,\n * is called when a message is received and the user is currently viewing your page.\n * @returns To stop listening for messages execute this returned function.\n *\n * @public\n */\nexport function onMessage(\n messaging: Messaging,\n nextOrObserver: NextFn<MessagePayload> | Observer<MessagePayload>\n): Unsubscribe {\n messaging = getModularInstance(messaging);\n return _onMessage(messaging as MessagingService, nextOrObserver);\n}\n\n/**\n * Called when a message is received while the app is in the background. An app is considered to be\n * in the background if no active window is displayed.\n *\n * @param messaging - The {@link Messaging} instance.\n * @param nextOrObserver - This function, or observer object with `next` defined, is called when a\n * message is received and the app is currently in the background.\n *\n * @returns To stop listening for messages execute this returned function\n *\n * @public\n */\nexport function onBackgroundMessage(\n messaging: Messaging,\n nextOrObserver: NextFn<MessagePayload> | Observer<MessagePayload>\n): Unsubscribe {\n messaging = getModularInstance(messaging);\n return _onBackgroundMessage(messaging as MessagingService, nextOrObserver);\n}\n\n/**\n * Enables or disables Firebase Cloud Messaging message delivery metrics export to BigQuery. By\n * default, message delivery metrics are not exported to BigQuery. Use this method to enable or\n * disable the export at runtime.\n *\n * @param messaging - The `FirebaseMessaging` instance.\n * @param enable - Whether Firebase Cloud Messaging should export message delivery metrics to\n * BigQuery.\n *\n * @public\n */\nexport function experimentalSetDeliveryMetricsExportedToBigQueryEnabled(\n messaging: Messaging,\n enable: boolean\n): void {\n messaging = getModularInstance(messaging);\n return _setDeliveryMetricsExportedToBigQueryEnabled(messaging, enable);\n}\n","/**\n * Firebase Cloud Messaging\n *\n * @packageDocumentation\n */\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport '@firebase/installations';\n\nimport { Messaging } from './interfaces/public-types';\nimport { registerMessagingInWindow } from './helpers/register';\n\nexport {\n getToken,\n deleteToken,\n onMessage,\n getMessagingInWindow as getMessaging\n} from './api';\nexport { isWindowSupported as isSupported } from './api/isSupported';\nexport * from './interfaces/public-types';\n\ndeclare module '@firebase/component' {\n interface NameServiceMapping {\n 'messaging': Messaging;\n 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