How to create a Plaid LinkToken using Node JS? - node.js

Question

I believe Plaid updated its createLinkToken documentation, but I can't seem to figure out what I'm doing wrong here. I'm taking a course, and here is the old code that worked in using a FirebaseFunction to create a link token with Plaid:
exports.createPlaidLinkToken = functions.https.onCall(async (data, context) => {
const customerId = context.auth.id;
const plaidClient = new plaid.Client({
clientID: functions.config().plaid.client_id,
secret: functions.config().plaid.secret,
env: plaid.environments.sandbox,
options: {
version: '2019-05-29',
},
});
return plaidClient.createLinkToken({
user: {
client_user_id: customerId,
},
client_name: "Bon Voyage",
products: ["auth"],
country_codes: ["US"],
language: "en"
}).then((apiResponse) => {
const linkToken = apiResponse.link_token;
return linkToken;
}).catch((err) => {
console.log(err);
throw new functions.https.HttpsError("internal", "Unable to create plaid link token: " + err);
});
});
I've tried a number of things. I know plaid.Client is now new.Configuration but I can't seem to figure out the rest. Any helpers?
You can see in the comments below what I've tried. I've modified the code as follows, and now receive Error status code 400.
const plaid = require('plaid');
const { Configuration, PlaidEnvironments, PlaidApi } = require("plaid");
exports.createPlaidLinkToken = functions.https.onCall(async (data, context) => {
const customerId = context.auth.uid;
const configuration = new Configuration({
basePath: PlaidEnvironments.sandbox,
baseOptions: {
headers: {
plaid_client_id: functions.config().plaid.client_id,
plaid_secret: functions.config().plaid.secret,
plaid_version: '2021-05-20'
},
},
});
const plaidClient = new PlaidApi(configuration);
return plaidClient.linkTokenCreate({
user: {
client_user_id: customerId,
},
client_name: "Bon Voyage",
products: ["auth"],
country_codes: ["US"],
language: "en"
})
.then((apiResponse) => {
const linkToken = apiResponse.data.link_token;
// const linkToken = response.link_token
return linkToken;
})
.catch((err) => {
console.log(err);
throw new functions.https.HttpsError(
"internal",
" Unable to create plaid link token: " + err
);
});
});

Answer 1

It's difficult to answer this question as you haven't mentioned what you've tried or what error you are experiencing. Have you reviewed the sample implementations in the docs that show how to do this, including the sample code in the Quickstart and Tiny Quickstart?
Off the top of my head, I do see that this sample code specifies an API version of 2019-05-29, which is not compatible with the latest version of the Node client library that uses new.Configuration.