vue.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const webpack = require('webpack');

const cesiumSource = 'node_modules/cesium/Source';
const cesiumWorkers = '../Build/Cesium/Workers';

module.exports = {
  publicPath: "./",
  configureWebpack: {
      plugins: [
          // Copy Cesium Assets, Widgets, and Workers to a static directory
          new CopyWebpackPlugin({
              patterns: [
                { from: path.join(cesiumSource, cesiumWorkers), to: 'Workers' },
                { from: path.join(cesiumSource, 'ThirdParty'), to: 'ThirdParty' },
                { from: path.join(cesiumSource, 'Assets'), to: 'Assets' },
                { from: path.join(cesiumSource, 'Widgets'), to: 'Widgets' }
              ]
          }),
          new webpack.DefinePlugin({
	          // Define relative base path in cesium for loading assets
	          CESIUM_BASE_URL: JSON.stringify('')
          }),
      ],
      module: {
        // Removes these errors: "Critical dependency: require function is used in a way in which dependencies cannot be statically extracted"
        // https://github.com/AnalyticalGraphicsInc/cesium-webpack-example/issues/6
        unknownContextCritical: false,
        unknownContextRegExp: /\/cesium\/cesium\/Source\/Core\/buildModuleUrl\.js/,
      }
  }
}