This is pre-request work to introduce a splash screen while site assets load.
The only change this commit introduces is that it ensures we add the defer attribute to core/plugin/theme .JS files. This will allow us to insert markup before the browser starts evaluating those scripts later on. It has no visual or functional impact on core.
This will not have any impact on how themes and plugins work. The only exception is themes loading external scripts in the </head> theme field directly via script tags. Everything will work the same but those would need to add the defer attribute if they want to keep the benefits introduced in this PR.
Previously, accessing the Rails app directly in development mode would give you assets from our 'legacy' Ember asset pipeline. The only way to run with Ember CLI assets was to run ember-cli as a proxy. This was quite limiting when working on things which are bypassed when using the ember-cli proxy (e.g. changes to `application.html.erb`). Also, since `ember-auto-import` introduced chunking, visiting `/theme-qunit` under Ember CLI was failing to include all necessary chunks.
This commit teaches Sprockets about our Ember CLI assets so that they can be used in development mode, and are automatically collected up under `/public/assets` during `assets:precompile`. As a bonus, this allows us to remove all the custom manifest modification from `assets:precompile`.
The key changes are:
- Introduce a shared `EmberCli.enabled?` helper
- When ember-cli is enabled, add ember-cli `/dist/assets` as the top-priority Rails asset directory
- Have ember-cli output a `chunks.json` manifest, and teach `preload_script` to read it and append the correct chunks to their associated `afterFile`
- Remove most custom ember-cli logic from the `assets:precompile` step. Instead, rely on Rails to take care of pulling the 'precompiled' assets into the `public/assets` directory. Move the 'renaming' logic to runtime, so it can be used in development mode as well.
- Remove fingerprinting from `ember-cli-build`, and allow Rails to take care of things
Long-term, we may want to replace Sprockets with the lighter-weight Propshaft. The changes made in this commit have been made with that long-term goal in mind.
tldr: when you visit the rails app directly, you'll now be served the current ember-cli assets. To keep these up-to-date make sure either `ember serve`, or `ember build --watch` is running. If you really want to load the old non-ember-cli assets, then you should start the server with `EMBER_CLI_PROD_ASSETS=0`. (the legacy asset pipeline will be removed very soon)
The `testem.scss` include triggers a live reload locally. We need these
styles when running `ember test --server`, so this loads that stylesheet
only in that scenario.
Ember tests follows a convention where test files have a postfix of
`-test.js`. This ensures that any files in the tests folder which
follows this pattern is included.
In our legacy environment, Ember RFC176 shims are included in `discourse-loader.js` which is part of the `vendor.js` bundle. This meant that the module shims were available as soon as the vendor.js asset was loaded.
Under Ember CLI, we were defining these shims in `discourse-boot.js`. This is loaded by the browser much later, and meant that the shims were not available to themes/plugins that call `require()` before Discourse has booted. This was causing errors under some circumstances.
This commit refactors the Ember CLI implementation so that the shims are included in the vendor.js bundle. This is done via an addon which leans on the ember-rfc176-data NPM package. This will ensure we have all the definitions, without the need for manual copy/paste.
In our legacy environment, Ember RFC176 shims are included in `discourse-loader.js` which is part of the `vendor.js` bundle. This meant that the module shims were available as soon as the vendor.js asset was loaded.
Under Ember CLI, we were defining these shims in `discourse-boot.js`. This is loaded by the browser much later, and meant that the shims were not available to themes/plugins that call `require()` before Discourse has booted. This was causing errors under some circumstances.
This commit refactors the Ember CLI implementation so that the shims are included in the vendor.js bundle. This is done via an addon which leans on the ember-rfc176-data NPM package. This will ensure we have all the definitions, without the need for manual copy/paste.
This reverts commit 2c7906999a.
The changes break some things in local development (putting JS files
into minified files, not allowing debugger, and others)
This reverts commit ea84a82f77.
This is causing problems with `/theme-qunit` on legacy, non-ember-cli production sites. Reverting while we work on a fix
This is quite complex as it means that in production we have to build
Ember CLI test files and allow them to be used by our Rails application.
There is a fair bit of glue we can remove in the future once we move to
Ember CLI completely.
Running in production mode is useful when doing performance-sensitive work.
- Set the `exportApplicationGlobal` flag, so we get the `Discourse` global in production mode. It defaults to only adding the global in development mode. Note that, when generating ember-cli assets via rails, we set this in `ApplicationHelper#discourse_config_environment`.
- Disable SRI - Ember CLI adds this to index.html when in production mode. We don't use SRI in production, so disable here to match.
- Refactor the `AssetRev` logic in `ember-cli-build.js`, so that our custom bundle hashes are find/replaced into index.html. Without this change, our custom bundles (e.g. `start-discourse.js`) remain without their hash in `index.html`, and do not function.
I have confirmed that the only diff in the `/dist` out following this change is to the `index.html` file. All other filenames and contents remain identical.
This commit removes jQuery file uploader from Discourse,
completing the transition to Uppy. The image-uploader
and UploadMixin components are also removed in this commit
as they have already been replaced and are the only things
using jQuery file upload.
.-'~~~`-.
.' `.
| R I P |
| jquery |
| file |
| upload |
| |
\\| 2013-2021 |//
-----------------
Now that d5e380e5c1 has been
committed there is nothing in the codebase that uses either
resumable.js or the old backup-uploader component.
R.I.P resumable.js
Under some conditions, these varied responses could lead to cache poisoning, hence the 'security' label.
Previously the Rails application would serve JSON data in place of HTML whenever Ember CLI requested an `application.html.erb`-rendered page. This commit removes that logic, and instead parses the HTML out of the standard response. This means that Rails doesn't need to customize its response for Ember CLI.
This adds an optional ENV variable, `EMBER_CLI_PROD_ASSETS`. If truthy,
compiling production assets will be done via Ember CLI and will replace
the assets Rails would otherwise use.
Normally we'd use `ember-auto-import` for this, but it's not run on
our admin tree due to the quirky way we load it conditionally.
Instead we'll append it at the bottom like our Rails app does.
* DEV: Use custom tags rather than handlebars server side
These will be skipped if they are ever rendered in a document. The
handlebars really messes stuff up.
* DEV: Build our own locale file for testing purposes
We can't practically proxy everything in test mode, but we can
approximate the logic and build our own locale file for testing purposes
that works quite well. This allows us to run tests without a proxy.
* DEV: Support for testem runner for ember cli tests
* DEV: Use Ember CLI middleware to decorate the index template
Previously we'd do this on the client side which did not support our
full plugin API. Now requests for the index template will contact the
dev server for a bootstrap.json and apply it to the current template.
* FIX: Allows logins in development mode for Ember CLI
