build.js — react Source File

Source Code

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 */

'use strict';

const path = require('path');
const rimraf = require('rimraf');
const webpack = require('webpack');

const isProduction = process.env.NODE_ENV === 'production';
rimraf.sync(path.resolve(__dirname, '../build'));
webpack(
  {
    mode: isProduction ? 'production' : 'development',
    devtool: isProduction ? 'source-map' : 'cheap-module-source-map',
    entry: [path.resolve(__dirname, '../src/index.js')],
    output: {
      path: path.resolve(__dirname, '../build'),
      filename: 'main.js',
    },
    module: {
      rules: [
        {
          test: /\.js$/,
          use: 'babel-loader',
          exclude: /node_modules/,
        },
      ],
    },
  },
  (err, stats) => {
    if (err) {
      console.error(err.stack || err);
      if (err.details) {
        console.error(err.details);
      }
      process.exit(1);
    }
    const info = stats.toJson();
    if (stats.hasErrors()) {
      console.log('Finished running webpack with errors.');
      info.errors.forEach(e => console.error(e));
      process.exit(1);
    } else {
      console.log('Finished running webpack.');
    }
  }
);