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webpack.config.js
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webpack.config.js
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/**
* Webpack configuration for pydata-sphinx-theme.
*
* This script does a few primary things:
*
* - Generates a `webpack-macros.html` file that defines macros used
* to insert CSS / JS at various places in the main `layout.html` template.
* - Compiles our SCSS and JS and places them in the _static/ folder
* - Vendors FontAwesome and some JS libraries (Bootstrap, etc)
*/
const { resolve } = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const CssMinimizerPlugin = require("css-minimizer-webpack-plugin");
const TerserPlugin = require("terser-webpack-plugin");
const dedent = require("dedent");
const { Compilation } = require("webpack");
/*******************************************************************************
* Paths for various assets (sources and destinations)
*/
const scriptPath = resolve(__dirname, "src/pydata_sphinx_theme/assets/scripts");
const staticPath = resolve(__dirname, "src/pydata_sphinx_theme/theme/pydata_sphinx_theme/static");
/*******************************************************************************
* functions to load the assets in the html head
* the css, and js (preload/scripts) are digested for cache busting
* the fonts are loaded from vendors
*/
function stylesheet(css) { return `<link href="{{ pathto('_static/${css}', 1) }}?digest=${this.hash}" rel="stylesheet" />`; }
function preloadScript(js) { return `<link rel="preload" as="script" href="{{ pathto('_static/${js}', 1) }}?digest=${this.hash}" />`; }
function deferScript(js) { return `<script defer src="{{ pathto('_static/${js}', 1) }}?digest=${this.hash}"></script>`; }
// Adding FA without preloading
function script(js) { return `<script src="{{ pathto('_static/${js}', 1) }}?digest=${this.hash}"></script>`; }
/*******************************************************************************
* the assets to load in the macro
*/
const theme_stylesheets = [
"styles/theme.css", // basic sphinx css
"styles/pydata-sphinx-theme.css", // all the css created for this specific theme
];
const theme_scripts = [
"scripts/bootstrap.js",
"scripts/pydata-sphinx-theme.js",
];
const fa_scripts = [
"scripts/fontawesome.js",
];
/*******************************************************************************
* Cache-busting Jinja2 macros (`webpack-macros.html`) used in `layout.html`
*
* @param {Compilation} the compilation instance to extract the hash
* @return {String} the macro to inject in layout.html
*/
function macroTemplate({ compilation }) {
return dedent(`\
<!--
AUTO-GENERATED from webpack.config.js, do **NOT** edit by hand.
These are re-used in layout.html
-->
{% macro head_pre_assets() %}
<!-- Loaded before other Sphinx assets -->
${theme_stylesheets.map(stylesheet.bind(compilation)).join("\n")}
{% endmacro %}
{% macro head_js_preload() %}
<!-- So that users can add custom icons -->
${fa_scripts.map(script.bind(compilation)).join("\n")}
<!-- Pre-loaded scripts that we'll load fully later -->
${theme_scripts.map(preloadScript.bind(compilation)).join("\n")}
{% endmacro %}
{% macro body_post() %}
<!-- Scripts loaded after <body> so the DOM is not blocked -->
${theme_scripts.map(deferScript.bind(compilation)).join("\n")}
{% endmacro %}
`);
}
/*******************************************************************************
* Bundle the modules to use them in the theme outputs
*/
const htmlWebpackPlugin = new HtmlWebpackPlugin({
filename: resolve(staticPath, "webpack-macros.html"),
inject: false,
minify: false,
css: true,
templateContent: macroTemplate,
});
module.exports = {
mode: "production",
devtool: "source-map",
entry: {
"pydata-sphinx-theme": resolve(scriptPath, "pydata-sphinx-theme.js"),
"fontawesome": resolve(scriptPath, "fontawesome.js"),
"bootstrap": resolve(scriptPath, "bootstrap.js"),
},
output: {
filename: "scripts/[name].js",
path: staticPath,
// clean webpack assets at the beginning of the build - except for
// files we need to explicitly keep
clean: {
keep(asset) {
const filesToKeep = ["styles/theme.css", ".gitignore"];
return filesToKeep.some(file => asset.includes(file));
}
},
},
optimization: {
minimizer: [
'...',
new CssMinimizerPlugin(),
new TerserPlugin({
terserOptions: {
parallel: true,
}
})]
},
module: {
rules: [{
test: /\.(sa|sc|c)ss$/,
use: [
// Extracts CSS for each JS file that includes CSS
{ loader: MiniCssExtractPlugin.loader },
{
// Interprets `@import` and `url()` like `import/require()` and will resolve them
loader: 'css-loader',
options: {
sourceMap: true,
url: true,
}
},
{ loader: 'resolve-url-loader' },
{
// Loads a SASS/SCSS file and compiles it to CSS
loader: "sass-loader",
options: {
sourceMap: true,
sassOptions: { outputStyle: "expanded" }
}
},
],
},
{
// Font vendoring and management - will separate FA and export the font files
test: /\.(woff|woff2|eot|ttf|otf)$/i,
type: 'asset/resource',
generator: {
filename: 'vendor/fontawesome/webfonts/[name][ext]'
}
},],
},
plugins: [
htmlWebpackPlugin,
new MiniCssExtractPlugin({
filename: "styles/[name].css",
chunkFilename: "styles/[id].css",
})],
experiments: {
topLevelAwait: true,
},
};