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/**
*WARNING: No ES6 modules here. Not transpiled! ****
*/
const spawnSync = require( 'child_process' ).spawnSync;
const path = require( 'path' );
const getBaseWebpackConfig = require( '@automattic/calypso-build/webpack.config.js' );
const ExtensiveLodashReplacementPlugin = require( '@automattic/webpack-extensive-lodash-replacement-plugin' );
const HtmlWebpackPlugin = require( 'html-webpack-plugin' );
const { BundleAnalyzerPlugin } = require( 'webpack-bundle-analyzer' );
const GenerateChunksMapPlugin = require( '../../build-tools/webpack/generate-chunks-map-plugin' );
const shouldEmitStats = process.env.EMIT_STATS && process.env.EMIT_STATS !== 'false';
const isDevelopment = process.env.NODE_ENV !== 'production';
/**
* Return a webpack config object
*
* Arguments to this function replicate webpack's so this config can be used on the command line,
* with individual options overridden by command line args. Note that webpack-cli seems to convert
* kebab-case (like `--ouput-path`) to camelCase (`outputPath`)
* @see {@link https://webpack.js.org/configuration/configuration-types/#exporting-a-function}
* @see {@link https://webpack.js.org/api/cli/}
* @param {Object} env environment options
* @param {Object} argv options map
* @param {Object} argv.entry Entry point(s)
* @param {string} argv.outputPath Output path
* @param {string} argv.outputFilename Output filename pattern
* @returns {Object} webpack config
*/
function getWebpackConfig(
env = {},
{
entry = path.join( __dirname, 'src', 'standalone' ),
outputPath = path.join( __dirname, 'dist' ),
outputFilename = 'build.min.js',
}
) {
const webpackConfig = getBaseWebpackConfig( env, {
entry,
'output-filename': outputFilename,
'output-path': outputPath,
} );
// While this used to be the output of "git describe", we don't really use
// tags enough to justify it. Now, the short sha will be good enough. The commit
// sha from process.env is set by TeamCity, and tracks GitHub. (rev-parse often
// does not.)
const gitDescribe = (
process.env.commit_sha ??
spawnSync( 'git', [ 'rev-parse', 'HEAD' ], {
encoding: 'utf8',
} ).stdout.replace( '\n', '' )
).slice( 0, 11 );
const pageMeta = {
'git-describe': gitDescribe,
};
return {
...webpackConfig,
optimization: {
concatenateModules: ! shouldEmitStats,
},
plugins: [
...webpackConfig.plugins,
new HtmlWebpackPlugin( {
filename: path.join( outputPath, 'index.html' ),
template: path.join( __dirname, 'src', 'index.ejs' ),
publicPath: 'https://widgets.wp.com/notifications/',
hash: true,
inject: false,
scriptLoading: 'blocking',
meta: pageMeta,
includeStyle: ( href ) => ! href.includes( '.rtl.css' ),
} ),
new HtmlWebpackPlugin( {
filename: path.join( outputPath, 'rtl.html' ),
template: path.join( __dirname, 'src', 'index.ejs' ),
publicPath: 'https://widgets.wp.com/notifications/',
hash: true,
inject: false,
scriptLoading: 'blocking',
meta: pageMeta,
includeStyle: ( href ) => href.includes( '.rtl.css' ),
} ),
new GenerateChunksMapPlugin( {
output: path.resolve( __dirname, 'dist/chunks-map.json' ),
} ),
shouldEmitStats &&
new BundleAnalyzerPlugin( {
analyzerMode: 'disabled', // just write the stats.json file
generateStatsFile: true,
statsFilename: path.join( __dirname, 'stats.json' ),
statsOptions: {
source: false,
reasons: true,
optimizationBailout: false,
chunkOrigins: false,
chunkGroups: true,
},
} ),
new ExtensiveLodashReplacementPlugin(),
].filter( Boolean ),
devtool: isDevelopment ? 'inline-cheap-source-map' : 'source-map',
};
}
module.exports = getWebpackConfig;
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