@lipemat/js-boilerplate/scripts/analyze.js

Dependencies and scripts for a no config JavaScript app

import { getConfig } from '../helpers/config.js';
import webpack from 'webpack';
import Statoscope from '@statoscope/webpack-plugin';
import fs from 'fs';
import minimist from 'minimist';
const help = `
Uses Statoscope to visualize the size of the project's output files.

Usage: lipemat-js-boilerplate analyze [--stats-only|--help]

  --help, -h : Show the help menu.
  --stats-only: Generate a stats.json file for use with 
                https://statoscope.tech for comparing diffs between builds.
	
`;
// Command line arguments.
const flags = minimist(process.argv.slice(2));
const workingDirectory = fs.realpathSync(process.cwd());
const statsDir = workingDirectory + '/node_modules/.cache/statoscope';
const webpackConfig = await getConfig('webpack.dist.js');
// @ts-expect-error TS2339 ESM imports of Statscrope resuire translation of `.default.
const StatoscopeWebpackPlugin = Statoscope.default;
if (true === flags.h || true === flags.help) {
    console.debug(help);
    process.exit(0);
}
function analyze() {
    const statsOnly = true === (flags['stats-only'] ?? false);
    webpackConfig.plugins?.push(new StatoscopeWebpackPlugin({
        saveOnlyStats: statsOnly,
        saveStatsTo: statsOnly ? workingDirectory + '/stats-[hash].json' : statsDir + '/stats-[hash].json',
        saveReportTo: statsDir + '/stats-[hash].html',
    }));
    // Use the default webpack stats configuration.
    delete webpackConfig.stats;
    webpack(webpackConfig)?.run((err, stats) => {
        if (err) {
            throw err;
        }
        if ('undefined' === typeof stats) {
            return;
        }
        if (stats.hasErrors()) {
            process.exit(1);
        }
    });
}
analyze();
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