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

user.onDelete.ts

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

export const userOnDeleteForAddSearch = functions.firestore
    .document('users/{userId}')
    .onDelete(async (event, context) => {
        const axios = require('axios');
        const documentId = event.id;

        // needless
//         const args = {
//             withCredentials: true,
//             custom_fields: {},
//             headers: {
//                 "Content-Type": "application/json",
//             }
//         }

        // auth is 2nd params. not 3rd!
        // axios.delete(`${baseURL}/v2/indices/${siteKey}/documents/${documentId}`, args, {
        axios.delete(`${baseURL}/v2/indices/${siteKey}/documents/${documentId}`, {
            // 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 ***")
            })
    });