Userfront Core JS library

The Userfront Core JavaScript library is intended for use in frontend applications.

The Core library can be used for the following:

• Tokens: read the user's access token to send to your backend
• User info: information about the currently logged in user
• Authentication: signup, login, logout, and password reset tasks; these are useful for building custom forms and auth flows.

Docs

Full docs can be found in the Userfront guide:

https://userfront.com/docs/js.html

Setup

Install by npm (or yarn):

npm install @userfront/core --save

Import and initialize the library:

import Userfront from "@userfront/core";

Userfront.init("demo1234");

Examples

// Import and initialize Userfront core JS
import Userfront from "@userfront/core";
Userfront.init("demo1234");

// Send a login link
Userfront.sendLoginLink("[email protected]");

// Read the access token
Userfront.tokens.accessToken;

// => "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJtb2RlIjoidGVzdCIsImlzQ29uZmlybWVkIjp0cnVlLCJ1c2VySWQiOjEsInVzZXJVdWlkIjoiZDAwNTlmN2UtYzU0OS00NmYzLWEzYTMtOGEwNDY0MDkzZmMyIiwidGVuYW50SWQiOiJwOW55OGJkaiIsInNlc3Npb25JZCI6IjRlZjBlMjdjLTI1NDAtNDIzOS05YTJiLWRkZjgyZjE3YmExYiIsImF1dGhvcml6YXRpb24iOnsicDlueThiZGoiOnsidGVuYW50SWQiOiJwOW55OGJkaiIsIm5hbWUiOiJVc2VyZnJvbnQiLCJyb2xlcyI6WyJhZG1pbiJdLCJwZXJtaXNzaW9ucyI6W119fSwiaWF0IjoxNjE3MTQ4MDY3LCJleHAiOjE2MTk3NDAwNjd9.gYz4wxPHLY6PNp8KPEyIjLZ8QzG3-NFJGPitginuLaU"

// Log the user out
Userfront.logout();

// Access the user's information
Userfront.user;

/** =>
 * {
 *    email: "[email protected]",
 *    phoneNumber: "+15558675309",
 *    name: "Jane Example",
 *    image: "https://res.cloudinary.com/component/image/upload/avatars/avatar-plain-9.png",
 *    data: {},
 *    username: "jane-example",
 *    confirmedAt: "2020-01-01T00:00:00.000Z",
 *    isConfirmed: true,
 *    createdAt: "2020-01-01T00:00:00.000Z",
 *    updatedAt: "2020-01-01T00:00:00.000Z",
 *    mode: "test",
 *    tenantId: "demo1234",
 *    userId: 1,
 *    userUuid: "d6f0f045-f6ea-4262-8724-dfc0b77e7dc9",
 * }
 */

Development

Building

• npm build: increment patch version & build all library files
• npm build:beta: increment prerelease version & build all library files

The build commands are split into two parts. build and build:beta both run these commands, which do not need to be run separately:

• npm build:standard: build the standard library files:
  • ESM module build/userfront-core.module.js
  • CJS module build/userfront-core.js
  • UMD module build/userfront-core.umd.js
  • Module with bundled dependencies, for import from CDN: build/userfront-core.modern.mjs
• npm build:ie11: build the IE11-compatible library file: userfront-core.ie11.umd.js
  • This script applies a patch to microbundle to enable Babel transformation of dependencies, so that Promises from axios are polyfilled without needing to touch the global Promise object.