En el caso de Babel / Flow se vería así:
Diseño de directorio
.
├── /build/ # Compiled output for Node.js 6.x
├── /src/ # Application source files
│ ├── db.js # Cloud SQL client for Postgres
│ ├── index.js # Main export(s)
│ ├── someFuncA.js # Function A
│ ├── someFuncA.test.js # Function A unit tests
│ ├── someFuncB.js # Function B
│ ├── someFuncB.test.js # Function B unit tests
│ └── store.js # Firebase Firestore client
├── .babelrc # Babel configuration
├── firebase.json # Firebase configuration
└── package.json # List of project dependencies and NPM scripts
src/index.js
- Exportaciones principales)
export * from './someFuncA.js';
export * from './someFuncB.js';
src/db.js
- Cloud SQL Client para Postgres
import { Pool } from 'pg';
import { config } from 'firebase-functions';
export default new Pool({
max: 1,
user: '<username>',
database: '<database>',
password: config().db.password,
host: `/cloudsql/${process.env.GCP_PROJECT}:<region>:<instance>`,
});
src/store.js
- Cliente de Firebase Firestore
import firebase from 'firebase-admin';
import { config } from 'firebase-functions';
firebase.initializeApp(config().firebase);
export default firebase.firestore();
src/someFuncA.js
- Función A
import { https } from 'firebase-functions';
import db from './db';
export const someFuncA = https.onRequest(async (req, res) => {
const { rows: regions } = await db.query(`
SELECT * FROM regions WHERE country_code = $1
`, ['US']);
res.send(regions);
});
src/someFuncB.js
- Función B
import { https } from 'firebase-functions';
import store from './store';
export const someFuncB = https.onRequest(async (req, res) => {
const { docs: regions } = await store
.collection('regions')
.where('countryCode', '==', 'US')
.get();
res.send(regions);
});
.babelrc
{
"presets": [["env", { "targets": { "node": "6.11" } }]],
}
firebase.json
{
"functions": {
"source": ".",
"ignore": [
"**/node_modules/**"
]
}
}
package.json
{
"name": "functions",
"verson": "0.0.0",
"private": true,
"main": "build/index.js",
"dependencies": {
"firebase-admin": "^5.9.0",
"firebase-functions": "^0.8.1",
"pg": "^7.4.1"
},
"devDependencies": {
"babel-cli": "^6.26.0",
"babel-core": "^6.26.0",
"babel-jest": "^22.2.2",
"babel-preset-env": "^1.6.1",
"jest": "^22.2.2"
},
"scripts": {
"test": "jest --env=node",
"predeploy": "rm -rf ./build && babel --out-dir ./build src",
"deploy": "firebase deploy --only functions"
}
}
$ yarn install # Install project dependencies
$ yarn test # Run unit tests
$ yarn deploy # Deploy to Firebase