Node.js で Cloud Firestore のデータを削除 (Delete)

#! /usr/bin/node
// ---------------------------------------------------------------
//  firestore_delete.js
//
//                  Jan/25/2020
//
// ---------------------------------------------------------------
console.error ("*** 開始 ***")

const key_in=process.argv[2]
console.log (key_in)

const admin = require('firebase-admin')
admin.initializeApp({
  credential: admin.credential.applicationDefault()
})

const db = admin.firestore()

try
    {
    db.collection('cities').doc(key_in).delete()
    }
catch (error)
    {
    console.error ("*** error *** delete ***")
    console.error (error)
    }

console.error ("*** 終了 ***")

// ---------------------------------------------------------------

export NODE_PATH=/usr/lib/node_modules
project_id="project-dec16-2020"
echo $project_id
export GOOGLE_CLOUD_PROJECT=$project_id
#
export GOOGLE_APPLICATION_CREDENTIALS="***.json"
./firestore_delete.js t0924