Sync Document for update (AddSearch with Firestore, Functions, TypeScript)

user.onUpdate.ts

import { index, baseURL, siteKey, secretKey } from './index';
import * as functions from 'firebase-functions'

export const userOnUpdateForAddSearch = functions.firestore
    .document('users/{userId}')
    .onUpdate(async (event, context) => {
        const axios = require('axios');
        // const oldData = event.before.data();
        const newData = event.after.data();
        const documentId = event.after.id;
        const args = {
            withCredentials: true,
            data: { ...newData },
            headers: {
                "Content-Type": "application/json",
            }
        }

        // PUT /v2/indices/{index public key}/documents/{document id}
        axios.put(`${baseURL}/v2/indices/${siteKey}/documents/${documentId}`, args, {
            // HTTP Basic Auth
            auth: {
                username: siteKey,
                password: secretKey,
            }
        })
            .then((response: any) => {
                console.log(response.data)
            })
            .catch((error: any) => {
                console.log(error)
            })
            .then(function () {
                console.log("*** finish ***")
            })
    });