How to use firebase cloud functions

Issue #667

Use node 10

Edit package.json

"engines": {
    "node": "10"
},

Secret key

Go to settings/serviceaccounts/adminsdk, download secret key in form of json and place it in lib/config.json

const serviceAccount = require('./config.json')

admin.initializeApp({
    credential: admin.credential.cert(serviceAccount),
    databaseURL: "https://my-app-4b968.firebaseio.com"
})

Local serve

This builds and spins up emulator to test

npm run serve

CORS

• https://stackoverflow.com/questions/42755131/enabling-cors-in-cloud-functions-for-firebase
• https://mhaligowski.github.io/blog/2017/03/10/cors-in-cloud-functions.html

response.set('Access-Control-Allow-Origin', '*');

var cors = require('cors');

// my function
var helloFn = function helloFn(req, res) {
    res.status(200)
        .send('Hello, Functions\n');
};

// CORS and Cloud Functions export logic
exports.hello = function hello(req, res) {
    var corsFn = cors();
    corsFn(req, res, function() {
        helloFn(req, res);
    });
}

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Updated at 2020-06-14 21:39:27