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@propelauth/node

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PropelAuth Node Library

A Javascript library for managing authentication, backed by PropelAuth.

PropelAuth makes it easy to add authentication and authorization to your B2B/multi-tenant application.

Your frontend gets a beautiful, safe, and customizable login screen. Your backend gets easy authorization with just a few lines of code. You get an easy-to-use dashboard to config and manage everything.

Documentation

  • Full reference this library is here
  • Getting started guides for PropelAuth are here

Installation

npm install @propelauth/node

Initialize

initBaseAuth performs a one-time initialization of the library. It will verify your apiKey is correct and fetch the metadata needed to verify access tokens in validateAccessTokenAndGetUserClass.

import { initBaseAuth } from '@propelauth/node';

const {
    validateAccessTokenAndGetUserClass,
    fetchUserMetadataByUserId,
    // ...
} = initBaseAuth({
    authUrl: "REPLACE_ME",
    apiKey: "REPLACE_ME",
});

Protect API Routes

After initializing auth, you can verify access tokens by passing it in the Authorization header (formatted Bearer TOKEN) to validateAccessTokenAndGetUserClass. You can see more information about the User Class here.

const authorizationHeader = // Get the Authorization header from an HTTP request
try {
    const user = await validateAccessTokenAndGetUserClass(authorizationHeader)
    console.log(`Got request from user ${user.userId}`);
} catch (err) {
    // You can return a 401, or continue the request knowing it wasn't sent from a logged-in user
    console.log(`Unauthorized request ${err}`);
}

Authorization / Organizations

You can also verify which organizations the user is in, and which roles and permissions they have in each organization all through the User Class

Check Org Membership

Verify that the request was made by a valid user and that the user is a member of the specified organization.

const authorizationHeader = // Get the Authorization header from an HTTP request
const orgId = // get the orgId from somewhere, such as the request URL
try {
    const user = await validateAccessTokenAndGetUserClass(authorizationHeader)
    const org = user.getOrg(orgId)
    if (!org) {
        // return a 403
    }
    console.log(`Got request from user ${user.userId} for org ${org.orgName}`);
} catch (err) {
    // You can return a 401, or continue the request knowing it wasn't sent from a logged-in user
    console.log(`Unauthorized request ${err}`);
}

Check Org Membership and Role

Similar to checking org membership, but will also verify that the user has a specific Role in the organization.

A user has a Role within an organization. By default, the available roles are Owner, Admin, or Member, but these can be configured. These roles are also hierarchical, so Owner > Admin > Member.

const authorizationHeader = // Get the Authorization header from an HTTP request
const orgId = // get the orgId from somewhere, such as the request URL
try {
    const user = await validateAccessTokenAndGetUserClass(authorizationHeader)
    const org = user.getOrg(orgId)
    if (!org || !org.isRole("Admin")) {
        // return a 403
    }
    console.log(`Got request from Admin user ${user.userId} for org ${org.orgName}`);
} catch (err) {
    // You can return a 401, or continue the request knowing it wasn't sent from a logged-in user
    console.log(`Unauthorized request ${err}`);
}

Check Org Membership and Permission

Similar to checking org membership, but will also verify that the user has the specified permission in the organization.

Permissions are arbitrary strings associated with a role. For example, can_view_billing, ProductA::CanCreate, and ReadOnly are all valid permissions. You can create these permissions in the PropelAuth dashboard.

const authorizationHeader = // Get the Authorization header from an HTTP request
const orgId = // get the orgId from somewhere, such as the request URL
try {
    const user = await validateAccessTokenAndGetUserClass(authorizationHeader)
    const org = user.getOrg(orgId)
    if (!org || !org.hasPermission("can_view_billing")) {
        // return a 403
    }
    console.log(`User ${user.userId} has 'can_view_billing' permissions for org ${org.orgName}`);
} catch (err) {
    // You can return a 401, or continue the request knowing it wasn't sent from a logged-in user
    console.log(`Unauthorized request ${err}`);
}

Calling Backend APIs

You can also use the library to call the PropelAuth APIs directly, allowing you to fetch users, create orgs, and a lot more.

const auth = initAuth({
    authUrl: 'REPLACE_ME',
    apiKey: 'REPLACE_ME',
})

const magicLink = await auth.createMagicLink({
    email: 'user@customer.com',
})

Questions?

Feel free to reach out at support@propelauth.com

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Package last updated on 17 Apr 2025

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