digitransit-ui/docs/Installation.md

Want to get started quickly?

• Run application in Docker.

Install requirements

You need Node, Yarn (or npm) and watchman.

• node -v should be >= 18.x, >= 20.x is recommended (version 18.20.2 and 20.13.1 is known to work)
  • We recommend that you use nvm to install a specific Node.js version. Optionally, you can also set up its automatic version switching shell integration.
• yarn --version should be >= 3 (version 3.4.1 is known to work). The project will then use yarn 3 from the included file.

You also need a C compiler:

• Linux: GCC 4.6 or later
• OS X: Xcode 5.0 or later
• Windows: for example MSVC 2013 Express

WSL

To use Windows Subsystem for Linux in digitransit-ui development you may need to do at least the following

1. Add the following to your /etc/hosts. This is because the project uses ipv6 compliant ::1 instead of ipv4 style 0.0.0.0:

::1     ip6-localhost ip6-loopback localhost

2. Add the following to your /etc/wsl.conf if not yet present. This prevents WSL from regenerating the /etc/hosts as well as the /etc/resolv.conf:

[network]
generateResolvConf=false
generateHosts = false

Install watchman

Version

A bit newer version of watchman is now required and 4.9.0 is no longer supported. Working versions include at least

• 20220320.140531.0
• 20240407.093313.0

OS X

brew install watchman

Other

It's possible to run prebuilt binaries from some release with these instructions or in some systems to build the binaries from code following these instructions.

Installation

• yarn install && yarn setup

Start development version

• OSX / Linux: yarn run dev
• Windows: npm run dev-win-national
• open: http://localhost:8080

Start production version

• First run: yarn run build, then run: yarn run start
• open: http://localhost:8080

Note: on Windows, add "win-" prefix to the run commands above. For example: npm run win-build. The same applies to other npm run commands below.

Modifying sub-modules and components

After you have changed the files in digitransit-components you have to re-run yarn setup to build those modules and apply the changes.

Analyse webpack bundle

• run: webpack -p --json > digitransit.json
• Upload digitransit.json to http://webpack.github.io/analyse/

Or you can also use this:

• https://github.com/robertknight/webpack-bundle-size-analyzer

Using Git Hooks

Husky (npm-package) is used for setting up the git hooks (.git/hooks/) that will allow custom scripts to be run on the repository. Look up 'husky' in package.json to see the details.

Configuration application

Digitransit ui can be configured in multiple ways. You can

• Change between National and Regional versions using CONFIG parameter
  • Alternatively, use BASE_CONFIG if server is supposed to serve multiple configurations which have same base configuration. It is used server side at start up and request's host specific config based on host or x-forwarded-host header is merged into it before returning config to client.
• Switch API backend using API_URL parameter

Note that you can combine multiple configuration parameters.

Changing National/Regional version (optional)

Start national version

• yarn run build
• yarn run start

Start HSL version

• yarn run build
• CONFIG=hsl yarn run start

Changing urls for OpenTripPlanner, Geocoding, Service alerts and Vehicle positions (optional)

By default digitransit-ui uses services from https://dev-api.digitransit.fi but you can override API server like so:

• yarn run build
• API_URL=https://api.digitransit.fi yarn run start

If you want to specify different URL (not just base URL) for individual services, you can define variables OTP_URL, MAP_URL and/or GEOCODING_BASE_URL (URL path before /search or /reverse).

• yarn run build
• GEOCODING_BASE_URL=https://api.digitransit.fi/geocoding/v1 OTP_URL=https://api.digitransit.fi/routing/v2/finland/ yarn run start

Configuring static message URL with env variable

• STATIC_MESSAGE_URL=https://dev-yleisviesti.digitransit.fi yarn run start