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Compile code in parallel #3778

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merged 2 commits into from
Jan 13, 2018
Merged

Compile code in parallel #3778

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cf04241
Cheap perf gains
Timer Jan 13, 2018
7a52d13
Whoopsie
Timer Jan 13, 2018
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48 changes: 30 additions & 18 deletions packages/react-scripts/config/webpack.config.dev.js
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Original file line number Diff line number Diff line change
Expand Up @@ -164,29 +164,41 @@ module.exports = {
{
test: /\.(js|jsx|mjs)$/,
include: paths.appSrc,
loader: require.resolve('babel-loader'),
options: {
// @remove-on-eject-begin
babelrc: false,
presets: [require.resolve('babel-preset-react-app')],
// @remove-on-eject-end
// This is a feature of `babel-loader` for webpack (not Babel itself).
// It enables caching results in ./node_modules/.cache/babel-loader/
// directory for faster rebuilds.
cacheDirectory: true,
},
use: [
require.resolve('thread-loader'),
{
loader: require.resolve('babel-loader'),
options: {
// @remove-on-eject-begin
babelrc: false,
presets: [require.resolve('babel-preset-react-app')],
// @remove-on-eject-end
// This is a feature of `babel-loader` for webpack (not Babel itself).
// It enables caching results in ./node_modules/.cache/babel-loader/
// directory for faster rebuilds.
cacheDirectory: true,
},
},
],
},
// Process any JS outside of the app with Babel.
// Unlike the application JS, we only compile the standard ES features.
{
test: /\.js$/,
loader: require.resolve('babel-loader'),
options: {
babelrc: false,
compact: false,
presets: [require.resolve('babel-preset-react-app/dependencies')],
cacheDirectory: true,
},
use: [
require.resolve('thread-loader'),
{
loader: require.resolve('babel-loader'),
options: {
babelrc: false,
compact: false,
presets: [
require.resolve('babel-preset-react-app/dependencies'),
],
cacheDirectory: true,
},
},
],
},
// "postcss" loader applies autoprefixer to our CSS.
// "css" loader resolves paths in CSS and adds assets as dependencies.
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1 change: 1 addition & 0 deletions packages/react-scripts/package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,7 @@
"react-dev-utils": "^4.2.1",
"style-loader": "0.19.0",
"sw-precache-webpack-plugin": "0.11.4",
"thread-loader": "1.1.2",
"uglifyjs-webpack-plugin": "1.1.6",
"url-loader": "0.6.2",
"webpack": "3.8.1",
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