FOLIO Developer Curriculum

Getting Started with FOLIO for Developers

00: Introduction
01: Deploy test Stripes module
02: Clone, Build, and Explore Okapi
03: Initialize Okapi from the command line
04: Set up the Okapi Users app

Deploy test Stripes module

Inform the Yarn package manager of the FOLIO UI registry location

(Note: the output of commands is artificially indented from the command line to call out the command lines.)

$ yarn config set @folio:registry
  yarn config v0.20.3
  success Set "@folio:registry" to "".
  ✨  Done in 0.04s.

Set up a Stripes Development UI Server

Create an empty directory to hold the Stripes UI Server configuration (called stripes-tutorial-platform). (Note: the first line of this block of shell commands saves the ‘root’ directory from which subsequent directories and files in this tutorial will be created.) (Note: if using the VirtualBox guest setup, it is recommended to first cd /vagrant before creating the empty directory. Doing so makes the Okapi and Stripes files available from the host operating system in the same directory the Vagrantfile file is located.)

$ export FOLIO_ROOT=`pwd`    # Store the current directory we are in for later use
$ mkdir $FOLIO_ROOT/stripes-tutorial-platform
$ cd $FOLIO_ROOT/stripes-tutorial-platform

In that directory, put two files: package.json and stripes.config.js.

Contents of package.json

package.json is a Node Package Manager (NPM) configuration file. It is a JSON file that contains two dictionaries: scripts and dependencies. The scripts dictionary specifies name-value pairs of commands that are used by Yarn to build and run the platform. The dependencies dictionary lists packages (and specific versions) that make up the Stripes client bundles.

At this stage of the Curriculum we are setting up a stand-alone Stripes UI Server instance that does not communicate with an Okapi back-end. The package.json below builds Stripes with a ‘trivial’ client bundle.

  "scripts": {
    "build": "stripes build stripes.config.js",
    "stripes": "stripes",
    "start": "stripes dev stripes.config.js"
  "dependencies": {
    "@folio/stripes-core": "^0.0.11",
    "@folio/trivial": "^0.0.2-test"

Contents of stripes.config.js

stripes.config.js contains the configuration details for the Stripes UI Server. It is referenced in scripts dictionary of package.json. It is a JSON file with two required dictionaries: config and modules. The config dictionary contains one key-value pair setting disableAuth to true. (Authentication and authorization are covered later in this tutorial.) The modules dictionary contains another dictionary of Stripes package and their configuration. The key in this dictionary is the name of the package to load from the FOLIO UI registry. The value in this dictionary are parameters that can override the default settings of the Stripes package.

module.exports = {
  config: { disableAuth: true },
  modules: {
    '@folio/trivial': {}

Build Stripes with the ‘trivial’ client bundle

Download/update Stripes along with its dependencies and modules, and link them together using the yarn install command:

$ yarn install
  yarn install v0.20.3
  info No lockfile found.
  warning No license field
  [1/4] 🔍  Resolving packages...
  [2/4] 🚚  Fetching packages...
  [3/4] 🔗  Linking dependencies...
  [4/4] 📃  Building fresh packages...
  success Saved lockfile.
  ✨  Done in 40.40s.

After the Stripes UI Server is built, run it using the yarn start command:

$ yarn start
  yarn start v0.20.3
  $ stripes dev stripes.config.js
  Listening at http://localhost:3000
  webpack built 554cedd72fbedc2f7499 in 7890ms

If you are using the VirtualBox guest machine, set the environment variable STRIPES_HOST before running yarn start to allow the Stripes development server to listen on all interfaces:

$ STRIPES_HOST= yarn start

The Stripes UI Server is now running at http://localhost:3000. The server will respond after the webpack built... message is displayed.

Interacting with the Stripes UI Server

The Stripes UI Server homepage at http://localhost:3000 looks like the figure below. Stripes homepage

There is one app in the Stripes UI Server – the “Trivial” app with the green icon. Click on it to get a form:

Trivial homepage

Type in a greeting and name of your choice and submit the form to see the reply.

Trivial reply

This is an example of the Stripes server component communicating with a Stripes browser component. We have not set up the Okapi part of the FOLIO system, so this interaction is strictly within the Stripes UI Server itself.

The source for the Trivial module is in the stripes-core git repository (, with the bulk of the work in the About.js file. More details about the state of the object within the module can be seen by viewing the debugging output in the browser’s JavaScript console.

Trivial reply with browser JavaScript console