arui-scripts/commands/build/build-wrapper.js

/* eslint import/no-extraneous-dependencies: 0 */
/* eslint no-console: 0 */

const chalk = require('chalk');
const webpack = require('webpack');
const formatWebpackMessages = require('react-dev-utils/formatWebpackMessages');

function build(config, previousFileSizes) {
    let compiler = webpack(config);
    return new Promise((resolve, reject) => {
        compiler.run((err, stats) => {
            if (err) {
                return reject(err);
            }
            const messages = formatWebpackMessages(stats.toJson({}, true));
            if (messages.errors.length) {
                // Only keep the first error. Others are often indicative
                // of the same problem, but confuse the reader with noise.
                if (messages.errors.length > 1) {
                    messages.errors.length = 1;
                }
                return reject(new Error(messages.errors.join('\n\n')));
            }
            if (
                process.env.CI &&
                (typeof process.env.CI !== 'string' ||
                    process.env.CI.toLowerCase() !== 'false') &&
                messages.warnings.length
            ) {
                console.log(
                    chalk.yellow(
                        '\nTreating warnings as errors because process.env.CI = true.\n' +
                        'Most CI servers set it automatically.\n'
                    )
                );
                return reject(new Error(messages.warnings.join('\n\n')));
            }
            return resolve({
                stats,
                warnings: messages.warnings,
                previousFileSizes
            });
        });
    });
}

module.exports = build;