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Nango Frontend SDK

The Nango frontend SDK is available on NPM with the package @nangohq/frontend.

Instantiating the frontend SDK

Please refer to the quickstart for how to instantiate the frontend SDK with your Nango setup.

Triggering OAuth flows

You trigger OAuth flows with nango.auth. This function returns a promise, which resolves if the OAuth flow was successful, and rejects if there was an error.

.then((result) => {
// result is an object with:
// {
// providerConfigKey: '<CONFIG-KEY>',
// connectionId: '<CONNECTION-ID>
// }
.catch((error) => {
// Error is an object with:
// {
// error: {
// type: 'authorization_cancelled', (or similar)
// message: 'Authorization fail: The user has closed the authorization modal before the process was complete.' (or similar)
// }
// }

There is an optional third parameter for this function, but it is currently only used for the special case below.

Triggering OAuth flows with configurations

Some API Providers require some connection-specific configuration (e.g. Zendesk, Shopify).

For example, Zendesk has the following authorization URL, where the subdomain is specific to a user's Zendesk account:


To set the subdomain pass in an additional configuration object to nango.auth():

nango.auth('zendesk', '<CONNECTION-ID>', { params: { subdomain: '<ZENDESK-SUBDOMAIN>' } });

// Or for Shopify
nango.auth('shopify', '<CONNECTION-ID>', { params: { subdomain: '<SHOPIFY-SUBDOMAIN>' } });