@rudderstack/rudder-integration-appsflyer-react-native/src/util.d.ts

Rudder React Native SDK Appsflyer Device mode support for Android and iOS

declare function isStringArray(elements: any): boolean;
declare function isString(element: any): element is string;
declare function getStringArray(element: any): any;
export { isString, isStringArray, getStringArray };