189 lines
6.7 KiB
Markdown
189 lines
6.7 KiB
Markdown
# Contributing to Pinafore
|
|
|
|
## Dev server
|
|
|
|
To run a dev server with hot reloading:
|
|
|
|
npm run dev
|
|
|
|
Now it's running at `localhost:4002`.
|
|
|
|
**Linux users:** for file changes to work,
|
|
you'll probably want to run `export CHOKIDAR_USEPOLLING=1`
|
|
because of [this issue](https://github.com/paulmillr/chokidar/issues/237).
|
|
|
|
## Linting
|
|
|
|
Pinafore uses [JavaScript Standard Style](https://standardjs.com/).
|
|
|
|
Lint:
|
|
|
|
npm run lint
|
|
|
|
Automatically fix most linting issues:
|
|
|
|
npm run lint-fix
|
|
|
|
## Integration tests
|
|
|
|
Integration tests use [TestCafé](https://devexpress.github.io/testcafe/) and a live local Mastodon instance
|
|
running on `localhost:3000`.
|
|
|
|
### Running integration tests
|
|
|
|
The integration tests require running Mastodon itself,
|
|
meaning the[Mastodon development guide](https://github.com/tootsuite/documentation/blob/master/Running-Mastodon/Development-guide.md)
|
|
is relevant here. In particular, you'll need a recent
|
|
version of Ruby, Redis, and Postgres running. For a full list of deps, see `bin/setup-mastodon-in-travis.sh`.
|
|
|
|
Run integration tests, using headless Chrome by default:
|
|
|
|
npm test
|
|
|
|
Run tests for a particular browser:
|
|
|
|
BROWSER=chrome npm run test-browser
|
|
BROWSER=chrome:headless npm run test-browser
|
|
BROWSER=firefox npm run test-browser
|
|
BROWSER=firefox:headless npm run test-browser
|
|
BROWSER=safari npm run test-browser
|
|
BROWSER=edge npm run test-browser
|
|
|
|
If the script isn't able to set up the Postgres database, try running:
|
|
|
|
sudo su - postgres
|
|
|
|
Then:
|
|
|
|
psql -d template1 -c "CREATE USER pinafore WITH PASSWORD 'pinafore' CREATEDB;"
|
|
|
|
### Testing in development mode
|
|
|
|
In separate terminals:
|
|
|
|
1\. Run a Mastodon dev server:
|
|
|
|
npm run run-mastodon
|
|
|
|
2\. Run a Pinafore dev server:
|
|
|
|
npm run dev
|
|
|
|
3\. Run a debuggable TestCafé instance:
|
|
|
|
npx testcafe --hostname localhost --skip-js-errors --debug-mode chrome tests/spec
|
|
|
|
### Test conventions
|
|
|
|
The tests have a naming convention:
|
|
|
|
* `0xx-test-name.js`: tests that don't modify the Mastodon database (read-only)
|
|
* `1xx-test-name.js`: tests that do modify the Mastodon database (read-write)
|
|
|
|
In principle the `0-` tests don't have to worry about
|
|
clobbering each other, whereas the `1-` ones do.
|
|
|
|
### Mastodon used for testing
|
|
|
|
There are two parts to the Mastodon data used for testing:
|
|
|
|
1. A Postgres dump and a tgz containing the media files, located in `fixtures`
|
|
2. A script that populates the Mastodon backend with test data (`restore-mastodon-data.js`).
|
|
|
|
The reason we don't use a Postgres dump for everything
|
|
is that Mastodon will ignore changes made after a certain period of time, and we
|
|
don't want our tests to randomly start breaking one day. Running the script ensures that statuses,
|
|
favorites, boosts, etc. are all "fresh".
|
|
|
|
### Updating the test data
|
|
|
|
You probably don't want to do this, as the `0xx` tests are pretty rigidly defined against the test data.
|
|
Write a `1xx` test instead and insert what you need on-the-fly.
|
|
|
|
If you really need to, though, you can either:
|
|
|
|
1. Add new test data to `mastodon-data.js`
|
|
|
|
or
|
|
|
|
1. Comment out `await restoreMastodonData()` in `run-mastodon.js`
|
|
2. Make your changes manually to the live Mastodon
|
|
3. Run the steps in the next section to back it up to `fixtures/`
|
|
|
|
### Updating the Mastodon version
|
|
|
|
1. Run `rm -fr mastodon` to clear out all Mastodon data
|
|
1. Comment out `await restoreMastodonData()` in `run-mastodon.js` to avoid actually populating the database with statuses/favorites/etc.
|
|
2. Update the `GIT_TAG` in `run-mastodon.js` to whatever you want
|
|
3. Run `npm run run-mastodon`
|
|
4. Run `npm run backup-mastodon-data` to overwrite the data in `fixtures/`
|
|
5. Uncomment `await restoreMastodonData()` in `run-mastodon.js`
|
|
6. Commit all changed files
|
|
7. Run `rm -fr mastodon/` and `npm run run-mastodon` to confirm everything's working
|
|
|
|
Check `mastodon.log` if you have any issues.
|
|
|
|
## Unit tests
|
|
|
|
There are also some unit tests that run in Node using Mocha. You can find them in `tests/unit` and
|
|
run them using `npm run test-unit`.
|
|
|
|
## Debugging Webpack
|
|
|
|
The Webpack Bundle Analyzer `report.html` and `stats.json` are available publicly via e.g.:
|
|
|
|
- [dev.pinafore.social/report.html](https://dev.pinafore.social/report.html)
|
|
- [dev.pinafore.social/stats.json](https://dev.pinafore.social/stats.json)
|
|
|
|
This is also available locally after `npm run build` at `.sapper/client/report.html`.
|
|
|
|
## Codebase overview
|
|
|
|
Pinafore uses [SvelteJS](https://svelte.technology) and [SapperJS](https://sapper.svelte.technology). Most of it is a fairly typical Svelte/Sapper project, but there
|
|
are some quirks, which are described below. This list of quirks is non-exhaustive.
|
|
|
|
### Prebuild process
|
|
|
|
The `template.html` is itself templated. The "template template" has some inline scripts, CSS, and SVGs
|
|
injected into it during the build process. SCSS is used for global CSS and themed CSS, but inside of the
|
|
components themselves, it's just vanilla CSS because I couldn't figure out how to get Svelte to run a SCSS
|
|
preprocessor.
|
|
|
|
### Lots of small files
|
|
|
|
Highly modular, highly functional, lots of single-function files. Tends to help with tree-shaking and
|
|
code-splitting, as well as avoiding circular dependencies.
|
|
|
|
### Inferno is loaded dynamically
|
|
|
|
This is a Svelte project, but `emoji-mart` is used for the emoji picker, and it's written in React. So we
|
|
lazy-load the React-compatible Inferno library when we load `emoji-mart`.
|
|
|
|
### Some third-party code is bundled
|
|
|
|
For various reasons, `a11y-dialog`, `autosize`, and `timeago` are forked and bundled into the source code.
|
|
This was either because something needed to be tweaked or fixed, or I was trimming unused code and didn't
|
|
see much value in contributing it back, because it was too Pinafore-specific.
|
|
|
|
### Every Sapper page is "duplicated"
|
|
|
|
To get a nice animation on the nav bar when you switch columns, every page is lazy-loaded as `LazyPage.html`.
|
|
This "lazy page" is merely delayed a few frames to let the animation run. Therefore there is a duplication
|
|
between `src/routes` and `src/routes/_pages`. The "lazy page" is in the former, and the actual page is in the
|
|
latter. One imports the other.
|
|
|
|
### There are multiple stores
|
|
|
|
Originally I conceived of separating out the virtual list into a separate npm package, so I gave it its
|
|
own Svelte store (`virtualListStore.js`). This never happened, but it still has its own store. This is useful
|
|
anyway, because each store has its state maintained in an LRU cache that allows us to keep the scroll position
|
|
in the virtual list e.g. when the user hits the back button.
|
|
|
|
Also, the main `store.js` store is explicitly
|
|
loaded by every component that uses it. So there's no `store` inheritance; every component just declares
|
|
whatever store it uses. The main `store.js` is the primary one.
|
|
|
|
### There is a global event bus
|
|
|
|
It's in `eventBus.js`. This is useful for some stuff that is hard to do with standard Svelte or DOM events.
|