Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Scripts: Optimize default Webpack configuration #14860

Merged
merged 5 commits into from
Apr 14, 2019
Merged

Scripts: Optimize default Webpack configuration #14860

Show file tree
Hide file tree
Changes from 4 commits
Commits
Show all changes
5 commits
Select commit Hold shift + click to select a range
e70e420
Scripts: Use thread-loader in Babel compilation
aduth Apr 7, 2019
2bd36f2
Scripts: Include Sourcemap Loader only in development environments
aduth Apr 7, 2019
ec9b584
Scripts: Use cache directory for Babel loader
aduth Apr 7, 2019
ba48f76
Fix package-lock.json to stop installing packages locally
gziolo Apr 12, 2019
bdc1c22
Tell webpack to look for thread-loader within the scripts node_module…
nosolosw Apr 12, 2019
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
32 changes: 26 additions & 6 deletions package-lock.json
View file
Open in desktop

Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.

40 changes: 25 additions & 15 deletions packages/scripts/config/webpack.config.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -66,12 +66,6 @@ const externals = [
const isProduction = process.env.NODE_ENV === 'production';
const mode = isProduction ? 'production' : 'development';

const getBabelLoaderOptions = () => hasBabelConfig() ? {} : {
babelrc: false,
configFile: false,
presets: [ require.resolve( '@wordpress/babel-preset-default' ) ],
};

const config = {
mode,
entry: {
Expand All @@ -89,18 +83,29 @@ const config = {
},
module: {
rules: [
{
test: /\.js$/,
use: require.resolve( 'source-map-loader' ),
enforce: 'pre',
},
{
test: /\.js$/,
exclude: /node_modules/,
use: {
loader: require.resolve( 'babel-loader' ),
options: getBabelLoaderOptions(),
},
use: [
'thread-loader',
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

over on Calypso, we found that the optimal number wasn't CPU-1, but more like CPU / 2. MIght be worth experimenting with a bit.

Copy link
Member Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

over on Calypso, we found that the optimal number wasn't CPU-1, but more like CPU / 2. MIght be worth experimenting with a bit.

Hey Ben, thanks for checking in. I didn't note it in the original comments, but I did tinker with this value slightly, though in my case I tried increasing it to the exact number of CPUs, and had observed a degraded benefit. I hadn't considered lowering it, but will give it a try.

Is there a pull request or issue which I could reference for that and/or other settings you'd explored?

Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

@aduth Automattic/wp-calypso#25456 and Automattic/wp-calypso#26059

oandregal marked this conversation as resolved.
Show resolved Hide resolved
{
loader: require.resolve( 'babel-loader' ),
options: {
// Babel uses a directory within local node_modules
// by default. Use the environment variable option
// to enable more persistent caching.
cacheDirectory: process.env.BABEL_CACHE_DIRECTORY || true,

// Provide a fallback configuration if there's not
// one explicitly available in the project.
...( ! hasBabelConfig() && {
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I had never liked the options weren't colocated with the loader, so I welcome this change!

Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

object destructuring magic :)

babelrc: false,
configFile: false,
presets: [ require.resolve( '@wordpress/babel-preset-default' ) ],
} ),
},
},
],
},
],
},
Expand All @@ -121,6 +126,11 @@ if ( ! isProduction ) {
// WP_DEVTOOL global variable controls how source maps are generated.
// See: https://webpack.js.org/configuration/devtool/#devtool.
config.devtool = process.env.WP_DEVTOOL || 'source-map';
config.module.rules.unshift( {
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

It might be push as well. I don't know if order matters. Better safe than sorry :)

test: /\.js$/,
use: require.resolve( 'source-map-loader' ),
enforce: 'pre',
} );
}

module.exports = config;
1 change: 1 addition & 0 deletions packages/scripts/package.json
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,7 @@
"source-map-loader": "^0.2.4",
"stylelint": "^9.10.1",
"stylelint-config-wordpress": "^13.1.0",
"thread-loader": "^2.1.2",
"webpack": "4.8.3",
"webpack-bundle-analyzer": "^3.0.3",
"webpack-cli": "^3.1.2",
Expand Down