129 lines
3.5 KiB
JavaScript
129 lines
3.5 KiB
JavaScript
const bfj = require('bfj-node4');
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const path = require('path');
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const mkdir = require('mkdirp');
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const { bold } = require('chalk');
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const Logger = require('./Logger');
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const viewer = require('./viewer');
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class BundleAnalyzerPlugin {
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constructor(opts) {
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this.opts = {
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analyzerMode: 'server',
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analyzerHost: '127.0.0.1',
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analyzerPort: 8888,
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reportFilename: 'report.html',
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defaultSizes: 'parsed',
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openAnalyzer: true,
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generateStatsFile: false,
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statsFilename: 'stats.json',
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statsOptions: null,
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excludeAssets: null,
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logLevel: 'info',
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// deprecated
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startAnalyzer: true,
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...opts
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};
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this.server = null;
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this.logger = new Logger(this.opts.logLevel);
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}
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apply(compiler) {
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this.compiler = compiler;
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const done = stats => {
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stats = stats.toJson(this.opts.statsOptions);
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const actions = [];
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if (this.opts.generateStatsFile) {
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actions.push(() => this.generateStatsFile(stats));
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}
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// Handling deprecated `startAnalyzer` flag
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if (this.opts.analyzerMode === 'server' && !this.opts.startAnalyzer) {
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this.opts.analyzerMode = 'disabled';
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}
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if (this.opts.analyzerMode === 'server') {
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actions.push(() => this.startAnalyzerServer(stats));
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} else if (this.opts.analyzerMode === 'static') {
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actions.push(() => this.generateStaticReport(stats));
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}
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if (actions.length) {
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// Making analyzer logs to be after all webpack logs in the console
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setImmediate(() => {
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actions.forEach(action => action());
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});
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}
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};
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if (compiler.hooks) {
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compiler.hooks.done.tap('webpack-bundle-analyzer', done);
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} else {
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compiler.plugin('done', done);
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}
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}
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async generateStatsFile(stats) {
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const statsFilepath = path.resolve(this.compiler.outputPath, this.opts.statsFilename);
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mkdir.sync(path.dirname(statsFilepath));
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try {
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await bfj.write(statsFilepath, stats, {
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space: 2,
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promises: 'ignore',
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buffers: 'ignore',
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maps: 'ignore',
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iterables: 'ignore',
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circular: 'ignore'
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});
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this.logger.info(
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`${bold('Webpack Bundle Analyzer')} saved stats file to ${bold(statsFilepath)}`
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);
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} catch (error) {
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this.logger.error(
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`${bold('Webpack Bundle Analyzer')} error saving stats file to ${bold(statsFilepath)}: ${error}`
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);
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}
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}
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async startAnalyzerServer(stats) {
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if (this.server) {
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(await this.server).updateChartData(stats);
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} else {
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this.server = viewer.startServer(stats, {
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openBrowser: this.opts.openAnalyzer,
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host: this.opts.analyzerHost,
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port: this.opts.analyzerPort,
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bundleDir: this.getBundleDirFromCompiler(),
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logger: this.logger,
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defaultSizes: this.opts.defaultSizes,
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excludeAssets: this.opts.excludeAssets
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});
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}
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}
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generateStaticReport(stats) {
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viewer.generateReport(stats, {
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openBrowser: this.opts.openAnalyzer,
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reportFilename: path.resolve(this.compiler.outputPath, this.opts.reportFilename),
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bundleDir: this.getBundleDirFromCompiler(),
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logger: this.logger,
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defaultSizes: this.opts.defaultSizes,
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excludeAssets: this.opts.excludeAssets
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});
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}
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getBundleDirFromCompiler() {
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return (this.compiler.outputFileSystem.constructor.name === 'MemoryFileSystem') ? null : this.compiler.outputPath;
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}
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}
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module.exports = BundleAnalyzerPlugin;
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