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Contributing Guide

Hi! We are excited that you are interested in contributing to Elk. Before submitting your contribution, please make sure to take a moment and read through the following guide.

Refer also to https://github.com/antfu/contribute.

For guidelines on contributing to the documentation, refer to the docs README.

Online

You can use StackBlitz Codeflow to fix bugs or implement features. You'll also see a Codeflow button on PRs to review them without a local setup. Once the elk repo has been cloned in Codeflow, the dev server will start automatically and print the URL to open the App. You should receive a prompt in the bottom-right suggesting to open it in the Editor or in another Tab. To learn more, check out the Codeflow docs.

Open in Codeflow

Local Setup

To develop and test the Elk package:

  1. Fork the Elk repository to your own GitHub account and then clone it to your local device.

  2. Ensure using the latest Node.js (16.x). If you have nvm, you can run nvm i to install the required version.

  3. The package manager used to install and link dependencies must be pnpm v7. To use it you must first enable Corepack by running corepack enable. (Note: on Linux in a standard Node 16+ environment, you should follow the instructions to install via Node's corepack rather than using the curl command)

  4. Check out a branch where you can work and commit your changes:

git checkout -b my-new-branch

  1. Run pnpm i in Elk's root folder

  2. Run pnpm nuxi prepare in Elk's root folder

  3. Run pnpm dev in Elk's root folder to start dev server or pnpm dev:mocked to start dev server with @[email protected] user.

We recommend installing ni, that will use the right package manager in each of your projects. If ni is installed, you can instead run:

ni
nr dev

Testing

Elk uses Vitest. You can run the test suite with:

nr test

Running PWA on dev server

In order to run Elk with PWA enabled, run pnpm dev:pwa in Elk's root folder to start dev server or pnpm dev:mocked:pwa to start dev server with @[email protected] user.

You should test the Elk PWA application on private browsing mode on any Chromium-based browser: will not work on Firefox and Safari.

If not using private browsing mode, you will need to uninstall the PWA application from your browser once you finish testing:

  • Open Dev Tools (Option + ⌘ + J on macOS, Shift + CTRL + J on Windows/Linux)
  • Go to Application > Storage, you should check the following checkboxes:
    • Application: [x] Unregister service worker
    • Storage: [x] IndexedDB and [x] Local and session storage
    • Cache: [x] Cache storage and [x] Application cache
  • Click on Clear site data button
  • Go to Application > Service Workers and check if the current service worker is missing or has the state deleted or redundant

CI errors

Sometimes when you push your changes to create a new pull request (PR), the CI can fail, but we cannot check the logs to see what went wrong.

If you are getting Semantic Pull Request error, please check the Semantic Pull Request documentation.

You can run the following commands on your local environment to fix CI errors:

  • pnpm test:unit to run unit tests, maybe you also need to update snapshots
  • pnpm test:typecheck to run TypeScript checks run on CI

RTL Support

Elk supports right-to-left languages, we need to make sure that the UI is working correctly in both directions.

Simple approach used by most websites of relying on direction set in HTML element does not work because direction for various items, such as timeline, does not always match direction set in HTML.

We've added some UnoCSS utilities styles to help you with that:

  • Do not use left/right padding and margin: for example pl-1. Use padding-inline-start/end instead. So pl-1 should be ps-1, pr-1 should be pe-1. The same rules apply to margin.
  • Do not use rtl- classes, such as rtl-left-0.
  • For icons that should be rotated for RTL, add class="rtl-flip". This can only be used for icons outside of elements with dir="auto", such as timeline, and is the only exception from the rule above. For icons inside the timeline, it might not work as expected.
  • For absolute positioned elements, don't use left/right: for example left-0. Use inset-inline-start/end instead. UnoCSS shortcuts are inset-is for inset-inline-start and inset-ie for inset-inline-end. Example: left-0 should be replaced with inset-is-0.
  • If you need to change the border radius for an entire left or right side, use border-inline-start/end. UnoCSS shortcuts are rounded-is for left side, rounded-ie for right side. Example: rounded-l-5 should be replaced with rounded-ie-5.
  • If you need to change the border radius for one corner, use border-start-end-radius and similar rules. UnoCSS shortcuts are rounded + top/bottom as either -bs (top) or -be (bottom) + left/right as either -is (left) or -ie (right). Example: rounded-tl-0 should be replaced with rounded-bs-is-0.

Internationalization

We are using vue-i18n via nuxt-i18n to handle internationalization.

You can check the current translation status: more instructions on the table caption.

If you are updating a translation in your local environment, you can run the following commands to check the status:

  • from root folder: nr prepare-translation-status
  • change to docs folder and run docs dev server nr dev
  • open http://localhost:3000/docs/guide/contributing#translation-status in your browser

Adding a new language

  1. Add a new file in locales folder with the language code as the filename.
  2. Copy en-US and translate the strings.
  3. Add the language to the locales array in config/i18n.ts, below en and ar:
    • If your language has multiple country variants, add the generic one for language only (only if there are a lot of common entries, you can always add it as a new one)
      • Add all country variants in country variants object
      • Add all country variants files with empty messages object: {}
      • Translate the strings in the generic language file
      • Later, when anyone wants to add the corresponding translations for the country variant, just override any entry in the corresponding file: you can see an example with en variants.
    • If the generic language already exists:
      • If the translation doesn't differ from the generic language, then add the corresponding translations in the corresponding file
      • If the translation differs from the generic language, then add the corresponding translations in the corresponding file and remove it from the country variants entry
  4. If the language is right-to-left, add dir option with rtl value, for example, for ar
  5. If the language requires special pluralization rules, add pluralRule callback option, for example, for ar

Check Pluralization rule callback for more info.

Messages interpolation

Most of the messages used in Elk do not require any interpolation, however, some messages require interpolation: check Message Format Syntax for more info.

We're using these types of interpolation:

List interpolation

You can access the elements of the list using the object notation using the index: for example, {0} for the first element, {1} for the second, {2} for the third and so on.

Named interpolation

Elk will use named interpolation only to handle plurals for number formatting. We have 2 scenarios for this:

  • using plural with i18n-t component
  • using plural without i18n-t component

Check Custom Plural Number Formatting Entries for custom plural entries in Elk with available values for interpolation.

When using plural number formatting, we'll have always {n} available in the message, for example, You have {n} new notifications|You have {n} new notification|You have {n} new notifications or You have no new notifications|You have 1 new notification|You have {n} new notifications.

We've included v named parameter, it will be used to pass the formatted number using Intl.NumberFormat::format: will be the number with separators symbols. The exception to the previous rule is when we're using plural with i18n-t component, in this case, we'll need to use {0} instead {v} to access the number.

Additionally, Elk will use compact notation for numbers for some entries, check notation and compactDisplay options: for example, 1K for 1000, 1M for 1000000, 1B for 1000000000 and so on. That entry will be available in the message using {v} named parameter (or {0} if using the message with i18n-t component).

You can run this code in your browser console to see how it works:

[1, 12, 123, 1234, 12345, 123456, 1234567].forEach((n) => {
  const acc = {}

  Array.from(['en-US', 'en-GB', 'de-DE', 'zh-CN', 'ja-JP', 'es-ES', 'fr-FR', 'cs-CZ', 'ar-EG']).forEach((l) => {
    const nf = new Intl.NumberFormat(l, {
      style: 'decimal',
      maximumFractionDigits: 0,
    })
    const nf2 = new Intl.NumberFormat(l, {
      notation: 'compact',
      compactDisplay: 'short',
      maximumFractionDigits: 1,
    })
    acc[l] = {
      number: n,
      format: nf.format(n),
      compact: nf2.format(n),
    }
  })
  console.table(acc)
})

Custom Plural Number Formatting Entries

Warning: Either {0} or {v} should be used with the exception being custom plurals entries using the {n} placeholder.

This is the full list of entries that will be available for number formatting in Elk:

  • action.boost_count (no need to be included, we should use always en-US entry): {0} for formatted number and {n} for raw number - {0} should be used
  • action.favourite_count (no need to be included, we should use always en-US entry): {0} for formatted number and {n} for raw number - {0} should be used
  • action.reply_count (no need to be included, we should use always en-US entry): {0} for formatted number and {n} for raw number - {0} should be used
  • account.followers_count: {0} for formatted number and {n} for raw number - {0} should be used
  • account.following_count: {0} for formatted number and {n} for raw number - {0} should be used
  • account.posts_count: {0} for formatted number and {n} for raw number - {0} should be used
  • compose.drafts: {v} for formatted number and {n} for raw number - {v} should be used
  • notification.followed_you_count: {0} for formatted number and {n} for raw number - {0} should be used
  • status.poll.count: {0} for formatted number and {n} for raw number - {0} should be used
  • time_ago_options.*: {0} for formatted number and {n} for raw number - {0} should be used: since numbers will be always small, we can also use {n}
  • timeline.show_new_items: {v} for formatted number and {n} for raw number - {v} should be used