Firebase Locally use config variable doesn't work - Error: Missing Plaid "Secret"

Question

I am having trouble testing firebase functions locally. I have ofc some critical api keys I want to protect. So for that I use functions.config().

When launching locally your functions server with firebase emulators:start or firebase emulators:start --only functions, it shows me an error when the secret value is null when using functions.config().plaid.secret.

I used firebase functions:config:get > .runtimeconfig.json to bring my configuration locally. I ran it in my functions folder.

The .runtimeconfig.json file looks like this:

{
  "plaid": {
    "secret": "blabla",
    "clientid": "blabla"
  }
}

My index.js looks like the following:

// Using Express
const express = require('express');
const app = express();
app.use(express.json());

// Cloud Functions
const functions = require("firebase-functions");

// Cloud Firestore
const admin = require("firebase-admin");
admin.initializeApp();
const database = admin.firestore();

// Plaid
const plaid = require("plaid");
const plaidClient = new plaid.Client({
    clientID: functions.config().plaid.clientid,
    secret: functions.config().plaid.secret,
    env: plaid.environments.development,
});

// Firestore Refs
const usersRef = database.collection("users");

// Token Management
// Create Token
app.post('/get_link_token', async (request, response) => {
    try {
        const clientUserId = "SomeUserID";
        // Create the link_token with all of your configurations
        const tokenResponse = await plaidClient.createLinkToken({
            user: {
                client_user_id: clientUserId,
            },
            client_name: 'someproject',
            products: ['auth', 'transactions'],
            country_codes: ['US'],
            language: 'en',
        });
        response.on({ link_token: tokenResponse.link_token });
    } catch (e) {
        // Display error on client
        return response.send({ error: e.message });
    }
});

My error is the following:

⚠  functions: The Cloud Firestore emulator is not running, so calls to Firestore will affect production.
⚠  Error: Missing Plaid "secret"
    at new Client (/Users/somedude/Work/someproject/functions/node_modules/plaid/lib/PlaidClient.js:17:11)
    at Object.<anonymous> (/Users/somedude/Work/someproject/functions/index.js:18:21)
    at Module._compile (node:internal/modules/cjs/loader:1083:30)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1112:10)
    at Module.load (node:internal/modules/cjs/loader:948:32)
    at Function.Module._load (node:internal/modules/cjs/loader:789:14)
    at Module.require (node:internal/modules/cjs/loader:972:19)
    at require (node:internal/modules/cjs/helpers:88:18)
    at /usr/local/lib/node_modules/firebase-tools/lib/emulator/functionsEmulatorRuntime.js:699:33
    at Generator.next (<anonymous>)
    at fulfilled (/usr/local/lib/node_modules/firebase-tools/lib/emulator/functionsEmulatorRuntime.js:5:58)
    at processTicksAndRejections (node:internal/process/task_queues:93:5)
⚠  We were unable to load your functions code. (see above)

Do you have any idea what I am doing wrong here?

Thanks in advance!

Edit: You have a little bit more context here https://github.com/plaid/plaid-node/issues/345 Still not solved on my end.

Answer 1

Alright, the solution is to actually use what the documentation says. as of this:

const plaidClient = new plaid.Client({
    clientID: functions.config().plaid.clientid,
    secret: functions.config().plaid.secret,
    env: plaid.environments.development,
});

And to be sure you are using at least the version 7.0.0. For some reason when adding a package with npm, it is installing the 2.1.0 which is absolutely not right.