react-native-google-analytics-bridge/dist/Helpers/FunctionCallTagHandler/FunctionCallTagHandlerAndroid.js

React Native bridge for using native Google Analytics libraries on iOS and Android

import { DeviceEventEmitter } from "react-native";
import { TagManagerBridge } from "../../NativeBridges";
/*
 * FunctionTagHandler module for Android adds an event listener per each Function Call registration.
 * To prevent possible messaging collision between native and JS realms, events are prefixed in
 * both environments before being registered.
 * For example, if a handler is being registered to handle tags with function name of "some_func", the corresponding
 * event would be GTM_FUNCTION_CALL_TAG_some_func. This is an implementation detail and does not affect high-level
 * APIs of the module.
 */
const TAG_EVENT_PREFIX = "GTM_FUNCTION_CALL_TAG_";
export default (functionName, handler) => {
    const event = TAG_EVENT_PREFIX + functionName;
    return TagManagerBridge.registerFunctionCallTagHandler(functionName).then(() => {
        DeviceEventEmitter.addListener(event, payload => {
            try {
                handler(functionName, payload);
            }
            catch (e) {
                console.error(`Unhandled exception in FunctionCallTag handler: ${e.stack}`, `\nFunction Name: ${functionName}`, `\nPayload: ${JSON.stringify(payload)}`);
            }
        });
        return true;
    });
};