124 lines
4.3 KiB
JavaScript
Executable File
124 lines
4.3 KiB
JavaScript
Executable File
#! /usr/bin/env node
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"use strict";
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const {
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resolve,
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dirname
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} = require('path');
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const commander = require('commander');
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const {
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magenta
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} = require('chalk');
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const analyzer = require('../analyzer');
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const viewer = require('../viewer');
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const Logger = require('../Logger');
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const utils = require('../utils');
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const SIZES = new Set(['stat', 'parsed', 'gzip']);
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const program = commander.version(require('../../package.json').version).usage(`<bundleStatsFile> [bundleDir] [options]
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Arguments:
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bundleStatsFile Path to Webpack Stats JSON file.
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bundleDir Directory containing all generated bundles.
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You should provided it if you want analyzer to show you the real parsed module sizes.
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By default a directory of stats file is used.`).option('-m, --mode <mode>', 'Analyzer mode. Should be `server`,`static` or `json`.' + br('In `server` mode analyzer will start HTTP server to show bundle report.') + br('In `static` mode single HTML file with bundle report will be generated.') + br('In `json` mode single JSON file with bundle report will be generated.'), 'server').option( // Had to make `host` parameter optional in order to let `-h` flag output help message
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// Fixes https://github.com/webpack-contrib/webpack-bundle-analyzer/issues/239
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'-h, --host [host]', 'Host that will be used in `server` mode to start HTTP server.', '127.0.0.1').option('-p, --port <n>', 'Port that will be used in `server` mode to start HTTP server.', 8888).option('-r, --report <file>', 'Path to bundle report file that will be generated in `static` mode.').option('-t, --title <title>', 'String to use in title element of html report.').option('-s, --default-sizes <type>', 'Module sizes to show in treemap by default.' + br(`Possible values: ${[...SIZES].join(', ')}`), 'parsed').option('-O, --no-open', "Don't open report in default browser automatically.").option('-e, --exclude <regexp>', 'Assets that should be excluded from the report.' + br('Can be specified multiple times.'), array()).option('-l, --log-level <level>', 'Log level.' + br(`Possible values: ${[...Logger.levels].join(', ')}`), Logger.defaultLevel).parse(process.argv);
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let [bundleStatsFile, bundleDir] = program.args;
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let {
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mode,
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host,
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port,
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report: reportFilename,
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title: reportTitle,
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defaultSizes,
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logLevel,
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open: openBrowser,
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exclude: excludeAssets
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} = program.opts();
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const logger = new Logger(logLevel);
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if (typeof reportTitle === 'undefined') {
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reportTitle = utils.defaultTitle;
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}
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if (!bundleStatsFile) showHelp('Provide path to Webpack Stats file as first argument');
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if (mode !== 'server' && mode !== 'static' && mode !== 'json') {
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showHelp('Invalid mode. Should be either `server`, `static` or `json`.');
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}
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if (mode === 'server') {
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if (!host) showHelp('Invalid host name');
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port = port === 'auto' ? 0 : Number(port);
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if (isNaN(port)) showHelp('Invalid port. Should be a number or `auto`');
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}
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if (!SIZES.has(defaultSizes)) showHelp(`Invalid default sizes option. Possible values are: ${[...SIZES].join(', ')}`);
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bundleStatsFile = resolve(bundleStatsFile);
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if (!bundleDir) bundleDir = dirname(bundleStatsFile);
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let bundleStats;
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try {
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bundleStats = analyzer.readStatsFromFile(bundleStatsFile);
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} catch (err) {
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logger.error(`Couldn't read webpack bundle stats from "${bundleStatsFile}":\n${err}`);
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logger.debug(err.stack);
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process.exit(1);
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}
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if (mode === 'server') {
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viewer.startServer(bundleStats, {
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openBrowser,
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port,
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host,
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defaultSizes,
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reportTitle,
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bundleDir,
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excludeAssets,
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logger: new Logger(logLevel),
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analyzerUrl: utils.defaultAnalyzerUrl
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});
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} else if (mode === 'static') {
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viewer.generateReport(bundleStats, {
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openBrowser,
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reportFilename: resolve(reportFilename || 'report.html'),
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reportTitle,
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defaultSizes,
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bundleDir,
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excludeAssets,
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logger: new Logger(logLevel)
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});
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} else if (mode === 'json') {
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viewer.generateJSONReport(bundleStats, {
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reportFilename: resolve(reportFilename || 'report.json'),
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bundleDir,
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excludeAssets,
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logger: new Logger(logLevel)
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});
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}
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function showHelp(error) {
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if (error) console.log(`\n ${magenta(error)}\n`);
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program.outputHelp();
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process.exit(1);
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}
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function br(str) {
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return `\n${' '.repeat(28)}${str}`;
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}
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function array() {
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const arr = [];
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return val => {
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arr.push(val);
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return arr;
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};
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} |