WP Scripts: Build block.json viewModule#57461
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This pull request changed or added PHP files in previous commits, but none have been detected in the latest commit. Thank you! ❤️ |
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[Feature] Block API
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I spent some time thinking about the problem of colliding assets and I think we should explore changing the output directories of script and module assets. This could mean things like CSS duplication, but I think we're unlikely to have both That should make the cleaning strategies simpler as builds would have more control over their output directories. I think something like this would be good, but I do want to do some testing: That doesn't need to block review of this PR, it can be landed and we can iterate on the output strategy. |
gziolo
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Jan 8, 2024
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| if ( ! isProduction ) { | ||
| // Set default sourcemap mode if it wasn't set by WP_DEVTOOL. | ||
| baseConfig.devtool = baseConfig.devtool || 'source-map'; | ||
| baseConfig.devServer = { |
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Will two configs integrate seamlessly with a single dev server that uses shared setup?
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Good spot, this needs to be configured with different ports.
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It looks like devServer doesn't really work with multiple compilations: webpack/webpack-cli#2408
I'll only add this to 1 config.
gziolo
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| // MiniCSSExtractPlugin to extract the CSS thats gets imported into JavaScript. | ||
| new MiniCSSExtractPlugin( { filename: '[name].css' } ), | ||
| // React Fast Refresh. | ||
| hasReactFastRefresh && new ReactRefreshWebpackPlugin(), |
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I don’t think React Fast Refresh will work out of the box for viewModule.
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I think it may work, but I'm not really sure how to test. Interactivity uses preact, which I don't think is compatible with the react refresh work. I saw this issue about refresh support for preact preactjs/preact#2184
We probably just remove this for now for modules.
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I put together a proposal in #57761 that outputs different assets to different directories, but I'm not completely happy with it. I now think that there is less likelihood of assets colliding because assets are named based on files in the src directory. Different assets can't have the same name because they would be the same src file (technically they probably could, but that's unlikely to happen in reality at this time). Let's see what happens while folks use module builds and whether there's a problem in practice. |
gziolo
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| process.env.WP_BUNDLE_ANALYZER && new BundleAnalyzerPlugin(), | ||
| // MiniCSSExtractPlugin to extract the CSS thats gets imported into JavaScript. | ||
| new MiniCSSExtractPlugin( { filename: '[name].css' } ), | ||
| // React Fast Refresh. |
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It looks like React Fast Refresh was misplaced. It should remain here for the scripts configuration as it works withe the existing Babel config and the dev server.
It won’t work with the modules config as it’s missing proper Babel handling, the dev server integration. In addition, I’m not sure whether it’s even possible to make it work with Preact.
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Restore ReactRefreshWebpackPlugin to @wordpress/scripts webpack config. #57461 accidentally moved the plugin to the modules config. It should have remained in the scripts webpack config and not been included in the modules config.
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Restore ReactRefreshWebpackPlugin to @wordpress/scripts webpack config. #57461 accidentally moved the plugin to the modules config. It should have remained in the scripts webpack config and not been included in the modules config.
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Restore ReactRefreshWebpackPlugin to @wordpress/scripts webpack config. #57461 accidentally moved the plugin to the modules config. It should have remained in the scripts webpack config and not been included in the modules config.
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How to change the previously working webpack additional config? I mean I was using something like this to add additional entrypoint: Now this is not working anymore. I got the error Can you please explain how to handle module compilation with multiple entrypoint? |
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Jan 17, 2024
| const scriptConfig = { | ||
| ...baseConfig, | ||
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| entry: getWebpackEntryPoints( 'script' ), |
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This needs to be refactored back to a callback function. There are two reasons:
- compatibility with the existing projects that override entry points
- more importantly, entry points are recomputed in the watch mode anymore
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It is a callback, the signature changed so this now returns the callback:
gutenberg/packages/scripts/utils/config.js
Lines 188 to 202 in 05b6bd7
I'm investigating the problem now.
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more importantly, entry points are recomputed in the watch mode anymore
Do you mean if I change block.json (to add another file) when wp-scripts start --experimental-modules is running, the build doesn't pick it up?
I don't think this has changed at all for script builds or for the script compilation of module builds. I believe the copy webpack plugin is adding the block.json files to the build which makes webpack observe those changes.
Because the modules compilation doesn't include the copy plugins for block.json, when block.json changes the module compilation won't pick it up. I'll look into how to make it observe those changes.
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It looks like it should work correctly for scripts when the is no experimental flag provided 👍
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Here's a PR to add block.json files as webpack file dependencies so they're watched from the module build: #57927
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Thanks for the report @Tropicalista. These changes were not intended the modify the webpack config (unless you've opted in to experimental module compilation). I'll investigate. |
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I'm sorry, I missed that this was for module compilation, so the build is being run with the @Tropicalista With experimental module compilation we don't support using the webpack configuration directly for extension like in your example. Module compilation via this package is experimental and we need to be able to change or remove the module configuration. In the future, module compilation may not even be handled via webpack. The main issue for discussing this module integration is #57492. Not considering the module webpack config to be public is one of the decisions we made at least for this first version:
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Restore ReactRefreshWebpackPlugin to @wordpress/scripts webpack config. #57461 accidentally moved the plugin to the modules config. It should have remained in the scripts webpack config and not been included in the modules config.
This was referenced Jan 17, 2024
This was referenced Feb 6, 2024
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What?
Add handling of
viewModulefield in block.json when usingwp-scriptsbuildorstart.Part of #57492
Why?
As the Modules API matures, our tooling should support it.
How?
We add an option to clearly mark this an an experimental feature:
wp-scripts build --experimental-modules.To support modules with webpack, it was necessary to run a multi-compilation. We use an array of webpack configurations instead of a single webpack configuration. This is because module compilation is an option at the compilation level and cannot be set for specific entrypoints.
If the
--experimental-modulesoption is found, we use an environment variable to change thewebpack.configexport to return an array[ scriptWebpackConfig, moduleWebpackConfig ]. Without the experimental option, thewebpack.configexport is the same except for changes that should not impact the script build at all. Consumers should be able to continue extending this config without noticing any differences. I introduced a snapshot test to compare the results, the difference is currently at 20dff00. I did subsequently remove this test as it doesn't seem to have long-term value.Notable changes to the existing webpack config: None.
experiments.outputModulewebpack option is set totrue. This enables module compilation, but module compilation is controled by other options (output.module). This should not impact existing builds.As mentioned above, if we find the
WP_EXPERIMENTAL_MODULESenvironment variable (set by adding the--experimental-modulesoption on the CLI) then the webpack config will export an array of configs.If we run in experimental modules mode, the
CleanWebpackPlugincould remove assets that should be included. This is because both compilations output to the same output directory. Ideally, each compilation would have control over its output directory and not share them. That's difficult and I don't have a good solution at this time given that we do want to share other assets like stylesheets. Additionally, if we were to output to different directories, the block.jsonfile:…rewriting would need to account for that.I don't have a convincing solution for either using multiple directories or preventing assets from being clobbered at this time. Given that this is clearly flagged as experimental, I believe that's acceptable and we can improve things if a convincing solution presents itself.
Since this is experimental, I wanted avoided adding more webpack configuration files. I don't want to expose more files that could folks require and extend. We could consider adding an
exportsfield to this package to control access to certain things, but that's likely a breaking change I didn't want to undertake here.Testing Instructions
To test this, you'll want to check this out and link a project that depends on
@wordpress/scriptsto use this PR.If you use
wp-scripts buildorwp-scripts start, there should be no significant changes with the current behavior.You can test the experimental build by adding a
viewModulefield to block.json in a project, then running a script likewp-scripts -- build --experimental-modulesto build it.I've been running the experimental build of https://github.com/sirreal/wp-scripts-interactivity-module-demo (the packages is linked to my development copy locally). The build produces the expected results with both scripts and modules. With #57437 (handling
viewModulein block registration), this results in a working plugin. Here's the build ouptut:block.json{ "$schema": "https://schemas.wp.org/trunk/block.json", "apiVersion": 3, "title": "Jon's cool counter", "name": "jon/the-block", "editorScript": "file:./index.js", "viewModule": "file:./view.js", "render": "file:./render.php", "category": "text" }index.asset.phpindex.jsrender.php<div data-wp-interactive='{"namespace":"jon/the-block"}' data-wp-context='{"val":0}'> <input readonly type='number' data-wp-bind--value='context.val' value='0' /> <button data-wp-on--click='actions.inc'>+</button> <button data-wp-on--click='actions.dec'>-</button> </div>view.asset.phpview.js