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Add step to generate stats.json file #1464

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Add step to generate stats.json file #1464

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15 changes: 15 additions & 0 deletions packages/react-scripts/scripts/build.js
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Original file line number Diff line number Diff line change
Expand Up @@ -119,6 +119,20 @@ function printFileSizes(stats, previousSizeMap) {
});
}

// Generate stats.json file
function generateStatsFile(stats, config) {
const statsFilepath = path.join(config.output.path, 'stats.json');

fs.writeFileSync(
statsFilepath,
JSON.stringify(stats.toJson("verbose"))
);
console.log('Stats file output to', chalk.cyan(path.join('build', 'stats.json')));
console.log('Open ', chalk.magenta('http://webpack.github.io/analyse/'), ' in your browser and upload the stats.json file!');
console.log(chalk.blue('(Tip: ', chalk.italic('CMD + double-click'), ' the link!)'));
console.log();
}

// Print out errors
function printErrors(summary, errors) {
console.log(chalk.red(summary));
Expand Down Expand Up @@ -155,6 +169,7 @@ function build(previousSizeMap) {
console.log();
printFileSizes(stats, previousSizeMap);
console.log();
generateStatsFile(stats, config);

var openCommand = process.platform === 'win32' ? 'start' : 'open';
var appPackage = require(paths.appPackageJson);
Expand Down