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noredink-ui

UI widgets we use.

Versioning policy

We try to avoid breaking changes and the associated major version bumps in this package. The reason for that is to avoid the following scenario:

  |
  x   4.6.0: Adding RadioButton widget
  |
  x   5.0.0: Breaking change in the TextArea widget
  |
  x   5.0.1: Styling fix in the Checkbox widget
  |

Suppose you just released version 5.0.1, a small styling fix in the checkbox widget, for a story you're working on. If the project you're working in currently pulls in noredink-ui at version 4.x, then getting to your styling fix means pulling in a new major version of noredink-ui. This breaks all TextArea widgets across the project, so those will need to be fixed before you can do anything else, potentially a big effort.

To prevent these big Yaks from suddenly showing up in seemingly trivial tasks we prefer to avoid breaking changes in the package. Instead when we need to make a breaking change in a widget, we create a new module for it Nri.Ui.MyWidget.VX. Similarly, when we build custom elements in JavaScript we create a file lib/MyWidget/VX.js and define a custom element nri-mywidget-vX.

We should change this process if we feel it's not working for us!

Moving Widgets to noredink-ui

If you are moving in a widget from the monolith:

  • Copy the contents of Nri.SomeModule and its tests to Nri.Ui.SomeModule.V1 in noredink-ui
  • Publish!
  • If you feel confident upgrading pre-existing usages of the widget, switch over to it everywhere!
  • If the new version introduces big changes and you'd rather keep the old one around for now, rename Nri.SomeModule to Nri.DEPRECATEDSomeModule in the monolith and start using Nri.Ui.SomeModule.V1 where you need it

Phasing out old versions

Our goal is to gradually move to the newest version of each widget, and remove the old versions when they are no longer used.

This means:

  • We should avoid introducing new references to old versions of a widget
  • When touching code that uses a widget, prefer upgrading to the latest version
  • If you introduce a new version of a widget, please consider taking the time to upgrade all previous usages
    • If for some reason this isn't feasible, create a story in your team's backlog so that you can prioritize it separately without disrupting your current work
  • You can delete an old version of a widget when there are no usages left
    • Currently, noredink-ui is used by the monolith, CCS and tutorials
    • Note: this will be a major version bump, so you may want to batch deletions together

Examples

This repo contains an app showcasing all of these UI widgets.

To see them locally:

script/develop.sh

If you'd like to test your widget in the monolith before publishing, run script/test-elm-package.py ../path_to_this_repo from the monolith's directory.

Tests

Run tests with

make test

CI (Travis)

Travis will run make ci to verify everything looks good. You can run this locally to catch errors before you push!

Deploying

Once your PR is merged, you can publish master as a new version:

Run the following to bump && publish the version in elm.json:

elm bump

Commit and push your changes in a PR. Once it's approved and merged, then:

git tag -a 5.10.0 -m "release version 5.10.0"
git push origin 5.10.0
elm publish

You can also add a tag in https://github.com/NoRedInk/noredink-ui/releases/new if you want to add more detail.

Once you've published, you should see the latest version at https://package.elm-lang.org/packages/NoRedInk/noredink-ui/.

Developing with Nix

You can develop this package without installing anything globally by using Nix. To get started, install nix from nixos.org/nix.

After that's set up in your shell (just follow the instructions at the end of the installation script) you can run nix-shell to get a development environment with everything you need.

If you find that inconvenient, try using direnv. Once that's set up, echo use nix > .envrc and then direnv allow. Anytime you enter the project your shell will automatically pick up the right dependencies.

If you find that direnv loads too slow, there are faster loading strategies than the default in their wiki.

Working with upstream dependencies

We use niv to manage Nix dependencies. It is automatically loaded in the Nix environment.

Here are some things you might need to do:

Task Command
Add a non-npm, non-Elm dependency packaged with Nix Look if it's in nixpkgs, or niv add github.com/user/repo
Update Nixpkgs niv update nixpkgs
See all our dependencies Look in shell.nix
See all our sources niv show