Firestoreへの各種データの書き込みと表示

const admin = require('firebase-admin');
const moment = require('moment');

admin.initializeApp({
    credential: admin.credential.cert('/path/to/key.json'),
    databaseURL: 'https://xxxxxxxxxx.firebase.com',
});

const db = admin.firestore();

//dataを定義
const _id = 1;
const _name = "Hoge";
const _age = "33";
const _hobbies = ['Golf', 'Fishing'];
const _birthday = "2011-01-11";
const _note = { pet: true, type: 'Dog' }
const _agree = true;

//async/awaitのために即実行形式にしてる
(async () => {

    //add 必要な形式に変換
    const res = await db.collection("members").add({
        id: _id, //そのまま数字
        name: _name, //そのまま文字列
        age: Number(_age), //数字から文字列
        hobbies: _hobbies, //そのまま配列
        birthday: admin.firestore.Timestamp.fromDate(moment(_birthday).toDate()), //文字列からTimestamp形式に
        note: _note, //Object型
        agree: _agree, //Boolean
        createdAt: admin.firestore.FieldValue.serverTimestamp(), //現在時
    });

    //登録されたid取得
    const docId = res.id;

    //docを取得
    const snapshot = db.collection("members").doc(docId).get();
    const doc = (await snapshot).data();

    //表示
    console.log(`id:${doc.id}`);
    console.log(`name:${doc.name}`);
    console.log(`age:${doc.age}`);
    console.log(`hobbies:${doc.hobbies[0]}`);
    console.log(`birthday:${moment(doc.birthday.seconds * 1000).format('YYYY-MM-DD')}`); //形式変換
    console.log(`agree:${doc.agree}`);
    console.log(`note:${doc.note.pet}`);
    console.log(`createdAt:${moment(doc.createdAt.seconds * 1000).format('YYYY-MM-DD')}`); //形式形式

})()

node index.js

id:1
name:Hoge
age:33
hobbies:Golf
birthday:2011-01-11
agree:true
note:true
createdAt:2019-12-21