gatsby-plugin-perf-budgets/src/tree/ContentModule.js

**gatsby-plugin-perf-budgets** is an *experimental* plugin to make browsing bundles on a page basis easier. It is used in conjunction with `gatsby-plugin-webpack-bundle-analyser-v2`.

import Module from './Module';

export default class ContentModule extends Module {

  constructor(name, data, ownerModule, parent) {
    super(name, data, parent);
    this.ownerModule = ownerModule;
  }

  get parsedSize() {
    return this.getSize('parsedSize');
  }

  get gzipSize() {
    return this.getSize('gzipSize');
  }

  getSize(sizeType) {
    const ownerModuleSize = this.ownerModule[sizeType];

    if (ownerModuleSize !== undefined) {
      return Math.floor((this.size / this.ownerModule.size) * ownerModuleSize);
    }
  }

  toChartData() {
    return {
      ...super.toChartData(),
      inaccurateSizes: true
    };
  }

};