| 1 | /**
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| 2 | * @license
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| 3 | * Copyright 2019 Google LLC
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| 4 | *
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| 5 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 6 | * you may not use this file except in compliance with the License.
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| 7 | * You may obtain a copy of the License at
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| 8 | *
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| 9 | * http://www.apache.org/licenses/LICENSE-2.0
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| 10 | *
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| 11 | * Unless required by applicable law or agreed to in writing, software
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| 12 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 14 | * See the License for the specific language governing permissions and
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| 15 | * limitations under the License.
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| 16 | */
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| 17 | import { DynamicConfig, DataLayer, Gtag, MinimalDynamicConfig } from '@firebase/analytics-types';
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| 18 | /**
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| 19 | * Inserts gtag script tag into the page to asynchronously download gtag.
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| 20 | * @param dataLayerName Name of datalayer (most often the default, "_dataLayer").
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| 21 | */
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| 22 | export declare function insertScriptTag(dataLayerName: string, measurementId: string): void;
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| 23 | /**
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| 24 | * Get reference to, or create, global datalayer.
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| 25 | * @param dataLayerName Name of datalayer (most often the default, "_dataLayer").
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| 26 | */
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| 27 | export declare function getOrCreateDataLayer(dataLayerName: string): DataLayer;
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| 28 | /**
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| 29 | * Creates global gtag function or wraps existing one if found.
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| 30 | * This wrapped function attaches Firebase instance ID (FID) to gtag 'config' and
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| 31 | * 'event' calls that belong to the GAID associated with this Firebase instance.
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| 32 | *
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| 33 | * @param initializationPromisesMap Map of appIds to their initialization promises.
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| 34 | * @param dynamicConfigPromisesList Array of dynamic config fetch promises.
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| 35 | * @param measurementIdToAppId Map of GA measurementIDs to corresponding Firebase appId.
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| 36 | * @param dataLayerName Name of global GA datalayer array.
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| 37 | * @param gtagFunctionName Name of global gtag function ("gtag" if not user-specified).
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| 38 | */
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| 39 | export declare function wrapOrCreateGtag(initializationPromisesMap: {
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| 40 | [appId: string]: Promise<string>;
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| 41 | }, dynamicConfigPromisesList: Array<Promise<DynamicConfig | MinimalDynamicConfig>>, measurementIdToAppId: {
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| 42 | [measurementId: string]: string;
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| 43 | }, dataLayerName: string, gtagFunctionName: string): {
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| 44 | gtagCore: Gtag;
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| 45 | wrappedGtag: Gtag;
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| 46 | };
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| 47 | /**
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| 48 | * Returns first script tag in DOM matching our gtag url pattern.
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| 49 | */
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| 50 | export declare function findGtagScriptOnPage(): HTMLScriptElement | null;
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