in maplibre-js-react-iot-asset-tracking/scripts/build.js [136:205]
function build(previousFileSizes) {
console.log('Creating an optimized production build...');
const compiler = webpack(config);
return new Promise((resolve, reject) => {
compiler.run((err, stats) => {
let messages;
if (err) {
if (!err.message) {
return reject(err);
}
let errMessage = err.message;
// Add additional information for postcss errors
if (Object.prototype.hasOwnProperty.call(err, 'postcssNode')) {
errMessage +=
'\nCompileError: Begins at CSS selector ' +
err['postcssNode'].selector;
}
messages = formatWebpackMessages({
errors: [errMessage],
warnings: [],
});
} else {
messages = formatWebpackMessages(
stats.toJson({ all: false, warnings: true, errors: 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')));
}
const resolveArgs = {
stats,
previousFileSizes,
warnings: messages.warnings,
};
if (writeStatsJson) {
return bfj
.write(paths.appBuild + '/bundle-stats.json', stats.toJson())
.then(() => resolve(resolveArgs))
.catch(error => reject(new Error(error)));
}
return resolve(resolveArgs);
});
});
}