bundle-stats-webpack-plugin/lib/webpack-plugin.js

In-depth bundle analyzer for webpack(bundle size, assets, modules, packages)

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.BundleStatsWebpackPlugin = void 0;
var _path = _interopRequireDefault(require("path"));
var _webpack = _interopRequireDefault(require("webpack"));
var _lodash = require("lodash");
var _cliUtils = require("@bundle-stats/cli-utils");
var _pluginWebpackValidate = _interopRequireDefault(require("@bundle-stats/plugin-webpack-validate"));
var CONFIG = _interopRequireWildcard(require("./config"));
function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function (e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, default: e }; if (null === e || "object" != typeof e && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (const t in e) "default" !== t && {}.hasOwnProperty.call(e, t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, t)) && (i.get || i.set) ? o(f, t, i) : f[t] = e[t]); return f; })(e, t); }
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
const DEFAULT_OPTIONS = {
  stats: {
    assets: true,
    chunks: true,
    modules: true,
    hash: true,
    builtAt: true
  }
};
const PLUGIN_NAME = 'BundleStats';
const isWebpack5 = parseInt(_webpack.default.version, 10) === 5;
class BundleStatsWebpackPlugin {
  constructor(options) {
    this.options = options;
  }
  apply(compiler) {
    const {
      stats,
      ...options
    } = (0, _lodash.merge)({}, DEFAULT_OPTIONS, this.options);
    if (isWebpack5) {
      compiler.hooks.thisCompilation.tap(PLUGIN_NAME, compilation => {
        compilation.hooks.processAssets.tapPromise({
          name: PLUGIN_NAME,
          stage: _webpack.default.Compilation.PROCESS_ASSETS_STAGE_REPORT
        }, async () => {
          const outputPath = compilation?.options?.output?.path;
          const compilationStats = compilation.getStats().toJson(stats);
          const logger = compilation.getInfrastructureLogger ? compilation.getInfrastructureLogger(PLUGIN_NAME) : console;
          const invalid = (0, _pluginWebpackValidate.default)(compilationStats);
          if (invalid) {
            logger.warn([invalid, CONFIG.OPTIONS_URL].join('\n'));
          }
          const newAssets = await (0, _cliUtils.generateReports)(compilationStats, {
            ...options,
            baselineFilepath: options.baselineFilepath && _path.default.join(outputPath, options.baselineFilepath)
          }, {
            outputPath,
            logger
          });
          Object.entries(newAssets).forEach(([filename, report]) => {
            compilation.emitAsset(filename, new _webpack.default.sources.RawSource(report.source), {
              development: true
            });
          });
        });
      });
      return;
    }
    compiler.hooks.emit.tapAsync(PLUGIN_NAME, async (compilation, callback) => {
      const outputPath = compilation?.options?.output?.path;
      const compilationStats = compilation.getStats().toJson(stats);
      const logger = compilation.getInfrastructureLogger ? compilation.getInfrastructureLogger(PLUGIN_NAME) : console;
      const invalid = (0, _pluginWebpackValidate.default)(compilationStats);
      if (invalid) {
        logger.warn([invalid, CONFIG.OPTIONS_URL].join('\n'));
      }
      const newAssets = await (0, _cliUtils.generateReports)(compilationStats, {
        ...options,
        baselineFilepath: options.baselineFilepath && _path.default.join(outputPath, options.baselineFilepath)
      }, {
        outputPath,
        logger
      });
      Object.entries(newAssets).forEach(([filename, report]) => {
        // eslint-disable-next-line no-param-reassign
        compilation.assets[filename] = {
          size: () => 0,
          source: () => report.source
        };
      });
      callback();
    });
  }
}
exports.BundleStatsWebpackPlugin = BundleStatsWebpackPlugin;